7SJ80

STANDARD
SPECIFICATIONS FOR
CONSTRUCTION WORKS
2008
Module 16 Electrical Installation
Introduction
The Standard Specification is published in a series of 21 stand-alone modules each addressing
single distinct areas of the construction process. This stand-alone module 16 addresses the main
aspects of electrical installation in general.
The purpose of the MoW STANDARD SPECIFICATIONS FOR CONSTRUCTION is to provide the
design professional with a guide for accepted construction practices for Ministry of Works projects.
As an aid to the designer, these Standard Specifications are provided for the inclusion in proposed
development projects for ease, efficiency and cost savings.
The Standard Specifications are not intended to limit the design responsibility of the design
professional. However, they establish a minimum acceptable criterion and/or quality for use within
Ministry of Works projects.
The design professional may increase the requirements of an item contained in the Standard
Specifications to meet job requirements, but when this is done, there should be no reference for
that item on the drawings to the Ministry of Works Standard Specifications and a new specification
should be included with the drawings or project contract documents.
The design professional must review all Standard Specifications to be sure that they are adequate
for the proposed project based on the job site conditions; the design professional is solely
responsible for the designs submitted under his seal.
In order to keep design standards current with changing regulations and improved construction
materials and practices this section will be updated and maintained by the concerned authorities of
the Ministry of Works. Prior to starting a new project, the design professional should contact the
concerned Directorate of the Ministry of Works to verify that he/she has the latest document
revisions.
Page 1
Module List
Module
No
Module Title
Guidance and General Specifications
Concrete
Earthworks
Glass and Glazing
Joinery and Carpentry
Ironmongery
Internal Finishes including Thermal Insulation
Painting and Decorating (Internal & External)
Metalwork
10
Roofing
11
Structural Steel (and Coatings)
12
Structural Timber
13
Masonry
14
Plumbing and Sanitary
15
Mechanical Installation in Buildings
16
Electrical Installation
17
Sewerage, Pipelines and Pipework
18
Sewerage M&E Works
19
Roadworks
20
Landscaping
21
Dredging, Reclamation and Shoreline Protection
Page 2
Table of Contents
CLAUSE
DESCRIPTION
PAGE
Introduction
Module List
Table of Contents
Foreword
1.
PART 1 MATERIALS
1.1
Source of Approvals 5
1.2
Delivery Control, Handling, Storage and Protection 32
2.
PART 2 METHODOLOGY AND WORKMANSHIP
2.1
Installation.. 33
2.2
Site Inspections, Testing and Commissioning.. 34
2.3
Staff Training.. 35
2.4
Completion and Handover... 35
3.
PART 3 SUMMARY
3.1
Summary of Requirements.. 36
Abbreviations
33
36
59
Page 3
Foreword
This specification provides the basis for electrical work in building construction. It relates to the
provision of all plant, labour and materials involved in connection with the electrical work.
This specification must be read in its entirety, as it is structured in order of work-flow, which means
that items or activities appear in several places in the specification corresponding to the
progression of the construction process.
For larger or more complex or specialist projects, a project-specific Particular Specification for
electrical work may also be provided.
Absence of clauses for materials and methods does not necessarily signify that they can not be
used. Proposals for use of innovative methods and materials are encouraged and are subject to
review and approval by the Client.
Where the word approved is used in this specification, this means that the Client or Engineer has
been consulted and has confirmed that the item or procedure is acceptable in the specific context
for which approval has been requested.
Page 4
1.
PART 1 MATERIALS
1.1
Source of Approvals
All materials and work shall comply with all the current relevant British Standards (BS),
specifications and regulations issued by the Electricity Distribution Directorate (EDD).
The contractor shall confirm the characteristics of the power supply before ordering
equipment dependant on these factors.
1.1.1
Utility Power Distribution
1.1.1.1
Electrical Supply
The characteristics of the power supply as provided by the Electricity Directorate are as
follows:
400 V 6% 3 phase, 4 wire, 50 Hz 2% System

230 V 6% 1 phase, 2 wire, 50 Hz 2% System
Fault level: 31 MVA at 400 V for 0.5 sec duration
The contractor shall, however, confirm these before ordering equipment depending on
these factors.
1.1.1.2
Transformers
Transformers shall be provided in accordance with the Electricity Distribution
Directorates Regulations for Electrical Installations as currently amended.
The transformers shall be constructed to BS EN 60076 or BS 6436 as applicable.
The transformers shall be 11,000 V primary to a 400 V secondary, DYN 11 type
transformer, either cast resin or oil filled as required.
The power supply system shall be 400 V, 3-phase, 50 Hz, arranged in a TN-S
configuration, with separate neutral and protective conductors throughout the system.
Cast resin or dry type shall comply with the following standards:
IEC 60076
BS EN 60076
Power Transformers
Power Transformers
Three phase, double wound windings shall be provided, connected and marked to vector
group reference Dyn 11 BS EN 60076 unless otherwise indicated on the drawings.
Off-load tappings shall be provided on higher voltage winding for a variation of 2.5%
and 5% of the primary voltage.
Fire behaviour class shall be to BS 7844; Class F1 or Class F2
Oil or synthetic liquid immersed shall comply with the following standards:
BS EN 60076 and IEC 60076 Power Transformers

BS 7821 Oil-immersed distribution transformers
Three phase, double wound windings should be provided, connected and marked to
vector group reference Dyn 11 BS EN 60076 or as otherwise indicated on the drawings.
Page 5
Off-load tappings shall be provided on higher voltage winding for a variation of 2.5%
and 5% of the primary voltage.
Fire behaviour class shall be provided to BS EN 50464; Class F1 or Class F2
1.1.1.3
HV Switchgear
HV switch and control gear shall be provided in accordance with the Electricity
Distribution Directorates Regulations for Electrical Installations as currently amended.
HV switchgear shall comply with BS 159, BS EN 62271, BS EN 60265, BS EN 62271:
Part 200 and BS EN 60694 where applicable.
Enclosure shall provide protection in accordance with BS EN 60529, indoor boards to be
rated to minimum IP 31 and external boards to be rated to minimum IP 65.
Facilities shall be provided on switchboards (excluding ring main units), to allow future
extension of switchboards at either end. The enclosures shall be cubicle or multi-cubicle
type assemblies.
Certificates shall be provided of verification of type test for short circuit strength of
components of each assembly. Ensure that drawings and other documents forming part
of certificate are available prior to order being placed.
Certificates issued by The Association of Short Circuit Testing Authorities (Inc) ASTA are
preferred.
Triple pole, fully insulated busbars shall be provided within the switchgear as indicated on
drawings. The material used shall be high conductivity solid copper in accordance with
BS 159 and BS EN 13601 or Tinned high conductivity solid copper in accordance with BS
159 and BS EN 13601.
Busbar unit length shall have non-hygroscopic insulation. Busbar joints and connections
to circuit-breakers and other units shall be insulated in accordance with BS 159.
Busbars shall be installed in separate compartments of switchgear with removable
access covers along length, with identification and warning labels on access covers.
An earthing bar made of copper to BS EN 13601 shall be securely fixed through full
length of switchgear, each end connected to an earthing terminal. All metalwork other
than current carrying parts shall be bonded to an earthing bar. Armouring and metal
sheaths shall be provided for all incoming and outgoing cables bonded to the earthing
bar.
1.1.1.4
HV Protective Devices
For oil immersed ring main units the following are applicable.
Table 1 Device Type and Applicable Standard
Device Type
Disconnectors & Earth
Switches
HV Fuses
Fuses Switches
Applicable Standard
to BS EN 62271: Part 102
to BS EN 60282
Where required on the drawings the following shall be provided:
Manual
operated
oil-immersed,
fault-making,
ON/OFF/EARTH switches for control of the ring circuit.
load-breaking,
Page 6
Manual operated fault-making, load-breaking, oil-immersed fused-switch for

ON/OFF control of an outgoing circuit with trip all phase mechanism and
striker pin fuses. Provide an interlock to prevent access to the fuses unless
they are isolated from the incoming supply and the out going cable.
Manual operated oil immersed outgoing circuit earthing switch.
Provide neon "live" indication for ring feeders.
Provide facilities to padlock switches in the closed, open or earthed
positions.
For switchgear utilising SF6 type devices, where shown on the drawings, the following
components shall be provided in a single tank charged with sulphur hexafluoride,
complying with BS 60376, at a pressure recommended by the manufacturer.
Two fault-make, load-break, ON/OFF/EARTH switches for control of the ring

circuit.
Outgoing circuit (Tee Off) circuit-breaker.
Fault making outgoing circuit (Tee Off) earthing switch.
Emergency trip switch to isolate all HV switchgear.
Where required, high voltage circuit-breakers shall be of type and application as indicated
on the schedule or drawings in accordance with BS EN 62271.
Automatic shutters shall be provided to cover high voltage contact spouts when circuit
breaker is removed from fixed compartment.
A mechanical indicator shall be provided of contacts open or closed visible through
window aperture in circuit breaker enclosure.
Circuit breakers shall be provided with manual trip facilities.
Shunt trip mechanism shall be provided, operating voltage as indicated.
An integral fault making earth switch shall be provided with rated short-time withstand
current as indicated for switchboard for circuit earthing and/or busbar earthing as
indicated on the drawings.
Facilities shall be provided to padlock breakers and switches in the ON, OFF and
EARTHED positions.
The operation of the circuit breaker closing, tripping, interlocking, intertripping, protection
devices, indicator lights, remote control, indication and alarm systems shall be
satisfactorily tested.
Facilities shall be provided for secondary circuits to be operationally tested with circuit
breaker isolated from main circuit.
1.1.1.5
Switch Room
The Electrical Services Contractor shall provide a modular main distribution switchboard,
located within the new Switch Room. The Switch Board will provide power supplies to all
sub-main and final circuit loads. The Contractor shall provide a 12-way TP&N MCB
distribution board, located within the new Switch Room. The distribution board will be
designated as power and lighting and will, in conjunction with the Switch Board, provide
power supplies to all sub-main and final circuit loads, as detailed within the appended
drawings.
The Contractor shall provide a Treatment for Electric Shock Notice and a schematic
drawing indicating the relevant distribution equipment within the Switch Room. The
schematic drawing shall indicate the calculated prospective short circuit current, earth
Page 7
loop impedance, cable sizes, switch and distribution board details, and positions of
equipment, measured Ip, Ze and maximum demand values. The schematic drawing shall
be framed, glazed and mounted adjacent to the switchgear.
1.1.1.6
Standby LV Distribution
A generating set shall be provided to BS 4999, BS 5000, BS ISO 8528, BS EN 60034-22
comprising a diesel engine, direct driven alternator/exciter, cooling system, exhaust
system, engine/alternator control panel, a daily service fuel oil tank and engine starting
system.
Anti-vibration mounts shall be provided between the base frame and the enclosure floor
to eliminate structure borne noise and vibration.
The performance of the engine shall be in accordance with BS ISO 3046. The engine
type shall be four stroke and either air cooled / water cooled and turbo-charged or
normally aspirated to suit duty.
The fuel oil shall conform to BS 2869 Class A2 and as a minimum the day tank will
contain fuel for running set on full load for 6 hours unless otherwise scheduled.
An engine speed governing system shall be provided in accordance with BS ISO 3046
and controls to manually adjust speed of engine 5% from nominal speed under all load
conditions.
An engine over-speed protection device shall be provided in accordance with BS ISO
3046 incorporated in speed control system.
Cooling systems shall cool the engine when running on continuous full load and on 10%
overload for one hour.
A 24 V DC supply shall be provided to start engine from any crankshaft position, by axial
type starter motor engaging with flywheel. Ensure starter motor disengages automatically
when engine starts or when de-energized.
The battery shall have capacity to crank the engine, when cold, 6 times in succession at
15C with 10 seconds between starts.
Battery type shall be low maintenance, sealed, Lead Acid.
Current-limited constant-current/constant-voltage chargers shall be provided in
accordance with battery manufacturer'
s recommendations, with boost and trickle charging
as required, and over current and over voltage protection. Earth fault detection and alarm
shall be provided where battery and charging system are not connected to earthed
system.
Exhaust systems shall be provided in accordance with manufacturer'
s recommendations
and to meet noise limitation requirements. Include exhaust silencer, expansion bellows
and all fittings, gaskets, joints and fixings.
Solid state type automatic voltage regulators shall be provided with manual adjustment to
set alternator output within 5% of rated voltage.
A schedule of controls and indication devices mounted on the engine/alternator control
panel shall be submitted along with the shop drawings and technical information for
review and approval by the engineer.
Where indicated on the drawings an automatic transfer switch shall be provided capable
of transferring the load automatically onto the generator supply following a power outage,
Page 8
the transfer switch or switches shall be located either at the location of distribution panels
and switchboards or adjacent to the items of plant the generator serves.
The ATS shall incorporate auxiliary contacts for monitoring purposes.
1.1.1.7
Uninterruptible Power Supply

Uninterruptible Power Supplies to BS EN 62040: Part 1-1 and BS EN 62040: Part 1-2,
shall have rating and configuration as indicated on the Drawings and Schedules.
Cooling fans shall be provided to permit units to operate at full rated load with one fan out
of service
Components to include:
Transformerrectifier (to BS EN 60146)

Bypass system
Switchgear
Electrical protection
Instruments
Control and indication
Inverters
Batteries and chargers
A transformerrectifier shall be provided in accordance with BS EN 60146.

A continuously rated unit shall be provided to supply full rated input load of the inverter
plus maximum battery charging current, with double wound input transformer in the
following configurations:
6-pulse transformer/rectifier for outputs up to and including 100 kVA

12-pulse transformer/rectifier for outputs over 100 kVA
Phase-shifting of input supplies to multi-unit systems shall be incorporated to reduce total

harmonic current drawn from mains supply.
Automatic static switch bypass shall be provided to transfer load to bypass supply,
without a supply break, when output of inverter deviates from specified limits. Inhibit
operation of bypass if inverter output is not in synchronism with bypass supply.
Internal manual bypass shall be incorporated with arrangements for completely isolating
the equipment from all supplies for maintenance or provide for connection of external
manual bypass supplied and installed by others (refer to drawings for applicability).
DC output protection shall be provided by fuse combination unit to BS EN 60947: Part 3
with fuses to BS 88: Part 1(BS 60269: Part 1).
AC input circuit-breaker shall be provided to BS EN 60898 or BS EN 60947: Part 2 or
provide fuse combination unit to BS EN 60947: Part 3 with fuses to BS 88 Part 1 (BS EN
60269: Part 1).
Flush mounted instruments shall be provided in dust and moisture resistant cases.
Analogue instruments shall conform to BS EN 60051: Part 1 and digital instruments to
BS EN 60073.
A static inverter shall be provided to supply rated load continuously and 150% rated load
for 10 seconds in any period of 15 minutes to BS EN 60146.
Output frequency shall be controlled automatically to enable unit to operate in
synchronism with bypass supply but to run independently when bypass supply deviates
Page 9
from specified limits of voltage or frequency. Provide manual adjustment of frequency

within the range +5% of nominal.
On-load switch disconnector shall be provided at output of converter system. Include
double-wound output transformer and filters to reduce the harmonic content of the output
voltage waveform to specified limits when supplying rated output to load of indicated
characteristics. Comply with BS IEC 60747: Part 1 and BS IEC 60748 for the application
of thyristors.
Battery manufacturers recommendations shall apply for current limit and fault voltage,
with over-current and over-voltage protection.
Earth fault detection and alarm shall be provided where battery and charging system are
not connected to earthed system.
1.1.1.8
LV Distribution
LV switchgear
The LV switchboards shall be constructed to BS EN 60439: Part 1, a type tested
assembly and in accordance with the requirements of the Electricity Distribution
Directorates Regulations for Electrical Installations as currently amended.
Enclosure shall be steel and the assembly construction shall conform to BS EN 62208,
with the panel form number indicated. The panel and distribution equipment shall be
complete with all necessary cable termination, cable spreader, and so on, to complete
and provide power.
All busbars are to be fully rated for Current carrying capacity, Frequency, Fault Level and
rated Voltage as detailed on the drawings and/or schedules. Neutral bars are to be fully
rated and not -sized bars. All bus bars must be insulated with non-hygroscopic
insulation.
The complete assembly shall be manufactured by an ASTA certified manufacturer.
Internal Separation to BS EN 60439: Part 1.
The assembly shall protect against direct and indirect contact, with protection maintained
after removal or withdrawal of removable or withdrawable parts.
Earth terminal, or for multi-cubicle enclosures a copper earth bar the full length of the
enclosure shall be provided, so that exposed conductive parts of the assemble can be
connected to the protective conductor. Earth connections shall be made to the assembly
without damage to the finish coating. Armouring and metal sheaths of all incoming and
outgoing cables, including common and individual glanding plates, shall be bonded to
earthing terminal or bar.
Inspection and maintenance of the board will be possible when assembly is in service
and under voltage. Space shall be provided between functional unit or group and
adjacent functional units or groups. Retainable fastening means shall be provided for
parts likely to be removed for maintenance.
Finish and colour shall be as Manufacturer'
s standard unless otherwise stated in the
schedules. When other than manufacturer'
s standard finish is specified, samples for each
paint system and for each colour shall be provided.
Type tests shall be undertaken and certificates of verification provided for the following:
Temperature rise limits (taking account of expected ambient conditions).

Dielectric properties.
Short circuit strength.
Page 10
Continuity of protective circuit.

Clearances and creep age distances.
Mechanical operation.
Degree of protection.
The following routine tests shall be performed at the works after the panels have been
finished and before shipping to site (routine tests to be retaken at site following reassembly):
Dielectric test
Insulation resistance test
Primary and/or secondary current injection
Phase rotation
Operation of protection devices, instruments and measuring devices
Operation of control and monitoring devices

The Engineer/design team and Client shall be invited to witness these tests at a time
convenient to them.
Components of site assemblies shall be part of a proprietary system and type tested as
defined above. Install assemblies in accordance with manufacturer'
s drawings and
instructions.
Site alterations shall not be made unless authorised. Where site modifications to
assemblies are authorised, modifications shall comply with the manufacturer'
s certified
drawings and instructions, and with type test certificate obtained for the arrangement of
components.
1.1.1.9
LV Switchgear Components / Protective Devices

Battery charger and battery unit
Where required a battery charge and battery unit shall be provided to operate certain
equipment upon mains failure, with function, input voltage and frequency as the following
schedules or as on drawings.
DC Output Voltage drop at full load 2%.

Operating temperature range 10C to 45C.
Charger type Thyristor or Transistor.
Battery type Nickel Cadmium (maintenance free).
Enclosure, sheet steel, IP31.
Corrosion resistant epoxy paint or Manufacturer'
s standard.
Colour Manufacturer'
s standard.
The following facilities shall be provided
MCB input protection.

Float charge.
Battery over discharge protection
Fuses for battery protection.
MCB'
s for outgoing circuits as indicated.
Automatic selection of boost charge.
The following meters shall be provided
Battery voltage.
Charge/discharge current (dual scale for float and boost).
The following lamp indications shall be provided

Page 11
Supply on.
Supply fail (monitor input terminals).
Float charge.
Boost charge.
No charge (when supply is on).
Battery voltage low.
Battery voltage high.
Earth fault on output.
A common alarm shall be provided, connected to operate a relay with shrouded 230 V 3A
AC or 0.5 A DC N/O-N/C volt free contacts, closed on any alarm, for remote indication
circuit and with the following indicators:
Supply failed.
No charge (when supply is on).
Battery voltage low.
Battery voltage high.
Earth fault on output.
1.1.1.10 Air Circuit Breakers

Air circuit breakers (ACBs) shall comply with BS EN 60947: Part 2, with fixed or
withdrawable isolating removable type circuit breakers with provision for safe
maintenance. The uninterrupted current rating indicated shall apply when unit is enclosed
and in operating environment at rated operational voltage and Utilisation Category shall
be B.
Circuit-breaker shall be provided with rated service short-circuit breaking capacity (Ics)
and short time withstand current (Icw) equal to or greater than that for the associated
switchboard.
A minimum of 3 (unless otherwise detailed or required) N/O-N/C volt free auxiliary
contacts shall be provided, rated a minimum 10 A 230 V wired to external terminals within
the outgoing cabling section.
Interlocks to prevent movement of the circuit-breaker shall be provided within the housing
when in `closed or `service position, with automatic shutters to cover all live contacts
when circuit-breaker is isolated, withdrawn or removed from housing.
Facility shall be provided to padlock circuit-breaker in isolated/withdrawn position, and to
lock automatic shutters covering live contacts when breaker withdrawn from housing.
1.1.1.11 Moulded Case Circuit Breakers
Moulded case circuit breakers (MCCBs) shall comply with BS EN 60947: Part 2, with
moulded case isolating or fixed type circuit-breakers, as detailed, with provision for safe
maintenance. The uninterrupted current rating indicated shall apply when unit is enclosed
and in operating environment at rated operational voltage and Utilisation Category shall
be B.
Circuit-breaker shall be provided with rated service short-circuit breaking capacity (Ics)
and short time withstand current (Icw) equal to or greater than that for the associated
switchboard.
Manual closing mechanism and protection shall be provided by combination of adjustable
magnetic/thermal compensating devices unless otherwise indicated.
A minimum of 2 (unless otherwise indicated or required) N/O-N/C volt free auxiliary
Page 12
contacts shall be provided, rated a minimum of 10 A 230 V AC wired to external terminals

within outgoing cabling section.
Interlocks shall be provided to prevent movement of circuit breaker within housing when
in '
closed'or '
service'position, with automatic shutters to cover all live contacts when
circuit breaker is isolated, withdrawn or removed from housing.
Facility shall be provided to padlock circuit- breaker in isolated/withdrawn position, and to
lock automatic shutters covering live contacts when removed from housing.
1.1.1.12 Air Break Switches
Air break switches shall comply with BS EN 60947: Part 3, with uninterrupted rated duty
and Utilisation Category AC 23 B (infrequent operation) unless otherwise indicated, and
operational performance not less than requirements of BS EN 60947: Part 3, Table IV.
Fuse switches shall be fitted with cartridge fuse links in accordance with BS 88 (BS EN
60269), removable neutral link in switches controlling circuits with neutral conductor, solid
links in isolating switches, and each switch shall be provided with facility to padlock in
OFF position.
Withdrawable chassis isolating type switches shall be provided with fully shrouded fixed
contacts or insulated cover plates, to prevent accidental contact with live parts.
Switches shall have individual enclosures and earth terminal, meet the degree of
protection for the switchboard and operating mechanisms interlinked with access door.
1.1.1.13 Protection Devices and Relays
Protection devices and relays shall comply with BS EN 61810 and BS 5583, and as
specified in the Work Sections, on drawings or Schedules.
Units shall be located such that operation may be observed and the devices reset or
adjusted without access to the interior of the enclosure.
1.1.1.14 Trip/Close Switches and Control Selector Switches
Units shall comply with BS EN 60947: Part 5-1.
A panel mounted heavy duty, spring return key operated trip/close switch shall; be
provided on each circuit- breaker fitted with electrically operated closing mechanism.
Contacts shall have a continuous rating of 10 A minimum at between 30 V to 250 V AC
and DC, and make and break duty rating of 30 A at 250 V AC or DC for a minimum
period of 3 seconds.
Where remote trip/close control is required, a panel mounted selector switch shall be
provided to select circuit- breaker for local or remote operation. Selection of remote or
local closing shall not prevent circuit breaker tripping under fault conditions.
1.1.1.15 Control Circuits
Control circuit voltage shall preferably not exceed 110 V AC (55-0-55).
Where control circuits are taken outside the enclosure to remote equipment, 24 V AC
shall be used.
For circuit-breaker shunt trip and protective circuits, 30 V DC shall be used, and for
integral protective devices 230 V AC, or as otherwise indicated.
Page 13
Control circuit transformers shall be provided to supply power at voltages to suit control
components in accordance with BS EN 61558: Part 2-23, complete with primary and
secondary fuses.
1.1.1.16 Motor Starters
Motors rated up to and including 5 HP shall be provided with direct on line starting
devices with a current limit of no greater than 5 times the running current.
Motors rated between 5 HP and 20 HP shall be provided with auto star delta type starting
devices and shall be arranged to limit the starting current to no more than 2.5 times the
rated current.
Motors rated at higher than 20 HP shall be provided with auto transformer type starters,
slip ring starters or star delta starters.
Where control of the motor is to be very precise or an energy efficiency design for offpeak loads is to be undertaken the use of variable speed drives shall be employed.
1.1.1.17 Current Transformers
Units shall comply with BS EN 60044: Part 1, with separate current transformers for each
protection device and instrumentation. Current transformers shall provide appropriate
accuracy and be compatible with protective device characteristics, performance and VA
rating required for satisfactory operation of protection devices, instruments and meters
indicated.
Current transformers shall be capable of withstanding maximum short time withstand
current of value and duration indicated for assembly.
Test links shall be provided in secondary connections of all current transformers to
facilitate testing of instruments, meters and protection devices.
1.1.1.18 Instruments and Meters
Units shall comply with BS EN 60051 for voltmeters, ammeters, watt meters, frequency
indicators and power factor indicators, and with BS 7856, BS EN 62053: Part 11, BS EN
62053: Part 22, or BS EN 62053: Part 21 for kWh meters, kVA and kW maximum
demand meters and polyphase reactive kVA meters and BS EN 62053: Part 23 for KVArh
meters.
Wiring to voltmeters and potential coils of watt meters, frequency indicators, power factor
indicators and kWh meters, kVA and kW maximum demand meters and polyphase
reactive kVA meters shall be protected by separate fuses.
Instruments and meters shall be suitable for flush mounting and type, size and accuracy
as drawings or schedules.
All instruments shall be completely segregated in instrument compartments, with panel
mounted meters on front of instrument compartment.
1.1.1.19 Indicator Lights
Units shall comply with BS EN 842 and BS EN 60947: Part 5-1.
Lamps shall be of same type throughout, with lamp test facility, and interchangeable
indicators for respective units.
Page 14
An integral double wound transformer shall be provided for each lamp unit on AC
indicator circuits and an integral ballast resistor for each lamp unit on DC indicator
circuits.
1.1.1.20 Instrument and Control Wiring
All instrument and control wiring shall be either single core insulated cable contained
within plastic panel wire way or double insulated cabling installed in a harness.
Each end of each wire shall be identified with a unique number using colour coded '
O'
ring markers. Fit lugs at termination points.
All wiring shall be neatly arranged, securely fixed, and where appropriate, protected by
cartridge fuses complying with BS 88 (BS EN 60269).
Motor control centre, starter and control panel wiring, shall be segregated from power
circuits and contained within plastic wire-ways or in a harness.
Each end of each wire shall be identified with a unique number using colour coded '
O'
ring markers, with lugs at termination points. All wiring shall be neatly arranged, securely
fixed and, where appropriate, protected by cartridge fuses complying to BS 88 (BS EN
60269).
1.1.1.21 Distribution Boards
Units shall comply with BS EN 60439: Part 1 and BS EN 60439: Part 3, as appropriate.
Enclosure shall be steel, with hinged lockable cover, internal separation Form 1, degree
of protection IP31, unless otherwise indicated. Each distribution board shall be fitted with
an isolating switch, size as shown on the drawings.
Busbars shall be installed in same position relative to their fuse carriers or miniature
circuit breakers (MCBs) for each pole. In TPN distribution boards, neutral busbars shall
be supplied with one outgoing terminal for each outgoing circuit.
Neutral shall be rated as phase conductor.
A multi terminal earthing bar shall be provided for circuit protective conductors for both
insulated and metal cased boards, with one terminal for each outgoing circuit, connected
directly to earthing terminal without dependence on exposed conductive parts of
enclosure.
Each fuse way and MCB way shall be identified by numbering. Each terminal on neutral
busbar and earthing bar shall be identified with its respective fuse way or MCB way.
Durable, printed circuit identification chart shall be provided inside enclosure.
Finish and colour shall be as manufacturer'
s standard unless otherwise stated.
Spare ways shall be provided, 20% or as indicated. Where specific ratings are indicated,
fuses or MCBs, shall be incorporated, or ways shall be left blank complete with blanking
covers for future additions.
Single phase consumer type units shall comply with BS EN 60439: Part 3. Consumer
units shall have minimum degree of protection in accordance with BS EN 60947: Part 1,
IP31. Fuses or miniature circuit breakers and means of isolation shall be provided as
indicated.
Miniature circuit breakers (MCBs) shall conform to BS EN 60898.
Page 15
Miniature circuit breakers shall be provided in accordance with BS EN 60898, and voltage
and current ratings, and type, according to instantaneous tripping current, rated braking
capacity and frequency, as drawings or schedules.
Residual current devices (earth leakage devices) shall comply with BS EN 61008. Supply
devices with rated voltage, rated current, rated tripping current, rated tripping time and
rated breaking capacity as indicated in the accompanying drawings and specifications.
Combined earth leakage/over current operated circuit-breakers shall comply with BS EN
61009.
Where earth leakage current monitors are used these shall comply with BS EN 62020.
Switchgear and distribution boards shall be provided with facilities to terminate size,
number and type of cable indicated. Where necessary fabricated steel extension boxes
shall be used for glanding large and multiple cables.
Non ferrous metal glanding plates shall be provided for single core cable terminations.
Rail mounted moulded terminal blocks shall be provided with fully shrouded connectors,
segregation plates, and end clamps. Insulating material shall be suitable for maximum
operating temperature of conductors.
Connectors shall be provided to clamp conductors between metal surfaces. Clamping
screws shall not make direct contact with conductors. Conductors shall maintain sufficient
contact pressure to ensure negligible impedance. Metal in contact with conductors shall
be 85% copper alloy and screws shall be of metal electrolytically compatible with copper
alloy.
1.1.1.22 Power Factor Correction
Power factor correction equipment shall be suitable for operation from the supply voltage
and frequency, including the tolerances specified elsewhere.
Power factor correction equipment shall be provided to correct the power factor to the
value specified elsewhere but as a minimum in accordance with the Electricity
Distribution Directorates Regulations for Electrical Installations as currently amended.
Power factor correction equipment intended to be applied centrally or to specific groups
of motors shall comprise a sufficient number of capacitor units to make up the specified
capacitance, accommodated in a suitable cabinet or in a series of modular cubicles
assembled together to form a composite unit, together with a control relay, switching
equipment, protective fuses and means of isolation, all assembled and connected to as to
control automatically the switching '
on'and '
off'of the capacitors in response to changes
in the load power factor.
Each capacitor stage shall be protected by BS EN 60269 fuses and be switched by a
separate, block type contactor rated for capacitor switching duty (BS EN 60947: Part 4-1
AC-6b).
Capacitors shall be self-healing type to IEC 60831: Part 1. Each capacitor shall have
overpressure operated disconnect fuse elements, in addition to over current protection.
Capacitors shall be provided with discharge resistors to achieve full discharge within
60 seconds of disconnection. Capacitors shall have low loss per kVAr and be rated for a
line current not less than 1.3 times the rated current. Means shall be provided to identify
a failed capacitor or bank of capacitors. Units of equal capacitance shall be
interchangeable.
Page 16
Detuned 3 phase reactors, iron cored and with copper windings shall be connected in
series with each capacitor stage for harmonic current suppression.
The control relay shall be suitable for operation from the existing current transformer(s)
installed for the purpose in the main low-voltage switchboard as required by the P.F.C.
manufacturer.
A microprocessor based reactive power controller shall be provided to control switching
of the capacitor banks and allow rotation of use of the banks to uniformly distribute
usage.
Shrouding and large, clearly visible warning labels shall be provided within the enclosure
to warn personnel of the need to discharge the equipment prior to any work.
1.1.1.23 HV/LV Cabling and Busbar
Low-voltage cables shall have a voltage designation of 450 V/750 V for harmonised types
and 600 V/1,000 V for armoured cables. Reduced neutral conductors in multiword cables
are not acceptable. Conductors shall be copper unless otherwise specified.
Labels on cable drums shall indicate the manufacturers name, size, description, BS
number, classification, length, grade and date of manufacture.
All cable types shall be certified and marked in accordance with the British Approvals
Service for Electric Cables (BASEC) Regulations or the equivalent CENELEC
harmonised cable certification marking.
Copies of the manufacturers cable test certificates shall be included in the operating and
maintenance manual.
Where conductor sizes are not indicated in the specification and/or the associated
drawing(s) they shall be selected in accordance with BS 7671 for the current rating
required by the circuit loading, the type of cable, the ambient temperature, grouping, the
conditions of installation and the maximum voltage drop permissible.
LSF insulated cables shall be 450 V/750 V grade to BS 7211 (where applicable). PVC
insulated cables shall be 450 V/750 V grade to BS 6004 (where applicable).
For cables rated up to 11 kV, Cross-linked polyethylene (XLPE) cables shall be
6,350 V/11,000 V grade to BS 6633, with copper conductors.
The conductors shall be stranded plain annealed copper Class 2 complying with
BS EN 60228. The conductor insulation shall be cross-linked polyethylene, with easypeel extruded semi-conducting screen, copper tape screen and at least two layers of
suitable bedding tape, to give a uniform thickness to armoured cables. Inner sheath shall
be extruded PVC Type 9 to BS EN 50363.
The armour for multi-core cables shall consist of a single layer of galvanised steel wire
complying with BS EN 10257: Part 1. The outer serving sheath shall be a layer of red
LSF complying with the requirements of BS 6724 Type 9 flame retardant. The sheath
shall be embossed with the manufacturers details as specified in the British Standard.
Single core cables shall have non-magnetic armour such as aluminium wire or strip.
For cables rated up to 1,000 V, cross linked polyethylene (XLPE) cables shall be
600 V/1,000 V grade to BS 5467, with copper conductors.
The conductors shall be stranded plain annealed copper class 2, complying with
BS EN 60228. The conductor insulation shall be XLPE, identified in accordance with
Table 51 A of BS 7671.
Page 17
The armouring for multi-core cables shall consist of a single layer of galvanised steel
wires complying with BS EN 10257: Part 1. Single core cables shall have non-magnetic
armour, such as aluminium wire or strip.
The outer sheath shall be a layer of black LSF complying with the requirements of
BS 6724, Type 9 flame retardant. The sheath shall be embossed with the manufacturers
details as specified in the British Standard.
Any cable joints shall be undertaken following a request and approval from the engineer
in writing.
All switchboards shall have top cable entry via bolted gland plates.
Cables will not be relocated/rerouted without written approval from the Engineer.
1.1.1.24 Fire Performance Cabling
Light duty mineral cables shall comply with BS EN 60702: Parts 1 and 2.
All conductors shall be copper unless otherwise indicated. All cables shall have an outer
sheath as indicated. 500 V light duty cables shall be used for sizes up to 2.5 mm2, 750 V
heavy duty cables for sizes over 2.5 mm2 to 25 mm2 and 750 V heavy duty single core
2
cables for over 25 mm unless otherwise indicated. Outer sheath colours shall be:
Red
White Orange -
Fire Alarms
Emergency Lighting
Other Services
Heavy duty mineral cables shall comply with BS EN 60702: Part 1, Section 15 and the
outer covering shall be halogen free material to BS 60702: Part 1, Section 15.
Fire performance shall be in accordance with BS 5839: Part 1 and the NFPA equivalent.
Soft skinned fire rated cables shall conform to BS 6387 Category CW&Z
1.1.1.25 Communications Cabling (copper and fibre)
Multimode fibres shall comply with EIA/TIA 492 specifications and OM3 fibre specification
as in ISO/IEC IS 11801 standard.
Single mode fibre shall comply with EIA/TIA 455 and BS EN 60793 test methods for
required attributes.
The 4 pair UTP cable shall be UL and c(UL) Listed Type CMP (plenum) or CM (nonplenum), or LS0H.
All 4 pair Category 6 cables shall conform to TIA/EIA-568B, IS11801, and BS EN 50173.
For slow speed applications 4 pair Category 3 cabling shall be used.
The structured cabling system when used in conjunction with equipment meeting the
appropriate ECMA standards shall be fully compliant with emission standards
BS EN 55022, BS EN 61000:Part 6-3 and BS EN 61000: Part 6-4.
The structured cabling system when used in conjunction with equipment meeting the
appropriate ECMA standards shall be fully compliant with immunity standards
BS EN 61000: Part 6-1, BS EN 55024 and BS EN 61000: Part 6-2.
Page 18
1.1.1.26 Controls Cabling

All conductors shall be copper unless otherwise indicated.
All cables shall conform to the relevant following standards of BS 5308, BS 5467,
BS 6346, BS 6724, BS 7629, BS 7846, BS 7870, BS EN 50288: Part 7 as appropriate.
1.1.1.27 Busbar Trunking System
Busbar trunking systems shall conform to BS 60529 and BS EN 60439 and shall be in
accordance with the Electricity Distribution Directorates rules and regulations. The
systems shall comprise a sheet metal enclosure, copper busbars and be complete with
busbar supports, expansion joints, thrust blocks, fire resisting barriers, and cable
terminations.
Bus bars shall be cold rolled copper bars of 98% conductivity. Joints shall be coated with
a minimum of 0.01 mm silver.
The bus bar shall be fully tested and received approval from the ASTA certification body.
Tap-off units shall incorporate H.R.C. fuses or MCCB'
s.
The enclosure shall be continuously earthed throughout its length and each joint shall be
bonded by copper links.
Bus bar trunking shall fully comply with BS. EN 60439: Part 2 and shall be type tested in
accordance with BS EN 60439: Part 2 to establish the short circuit withstand ratings. In
the case of short-time rating the specified current is applied for the quoted time.
The IP rating of the trunking shall be as per the drawings and particular specification.
Bus duct shall be low reactance type of voltage and rating as shown and as specified
hereinafter. Neutral, where required, shall be fully capacity. Bus duct shall be of ventilated
type unless noted otherwise. All bus ducts, joints, tap-off positions and plug units, and so
on, shall be protected from sprinklers (IP54) throughout.
Neutral conductors shall be fully rated with an option of 200% rating where required by
high harmonic content loads.
Busbars shall be provided with an integral earth conductor CPC bar within the enclosure,
rated at least 50% size.
Where required cast resin busbars may be used either for high ingress protection
requirements or for the distribution of fire rated supplies.
Where this is required the copper busbar shall be embedded in an enclosure of a non
flammable, self-extinguishing and homogeneous insulation mix based on epoxy castresin with mineral fillers ensuring high mechanical strength and chemical withstand.
Minimum IP rating for cast resin busbar shall be IP 67.
The busbar resin shall be made from non-flammable, self-extinguishing insulation to
BS EN 60332 and DIN 4102 Part 1.
Electrical continuity E30 shall be to DIN 4102 Part 12.
Fire-proof wall bushings, A60, H60, S60 to S180 shall be to DIN4102 Part 9, fire resistant
to IEC 60331, and code EEX m II T5 certificate to BS EN 60079: Part 18.
1.1.1.28 Cable Support Systems
All cables shall be supported throughout their length using conduit, trunking and
Page 19
enclosures, cable tray, cable racking, special support systems, cleared or clipped fixing
direct to building fabric, or aerial catenary suspension systems, as required.
Cable support systems shall allow for spacing in accordance with BS 7671 for the design
current of the cable.
Cable trays, ladders and baskets shall conform to BS EN 61537 and BS 6946 and shall
be constructed of hot rolled steel galvanized after manufacture to BS EN ISO 1461; or
bending and profiling quality hot dipped galvanized steel to BS EN 10327 or
BS EN 10143.
All continuous runs of cable support systems shall be electrically continuous.
1.1.1.29 Cable Conduit and Trunking
Conduit systems and fittings used for the installation of electrical services shall comply
with BS EN 61386 and BS EN 856 as appropriate.
Conduit shall be from one manufacturer throughout, with fittings to match conduit grade
and finish.
Temperature classification of conduits shall be -5+60C.
Resistance against ingress of water and solid foreign bodies shall be rated to BS EN
60529 with a minimum classification of minimum IP 31 for indoor use, to minimum IP 65
for exterior.
Standard trunking systems and fittings used for the installation of electrical services shall
comply with BS EN 856 and BS EN 50085. Trunking of each type shall be from one
manufacturer.
Material for steel trunking shall be to BS EN 50085, and partitions and covers shall be of
the same material as trunking, as follows:
Class 2: Electroplated zinc having a minimum thickness of zinc coating of 0.0012

mm inside and outside with additional coating of stoved or air drying paint, applied at
least to the external surface.
Class 3: Hot dip zinc coated steel to BS EN 10327 or BS EN 10143 and

BS EN 10326.
Flanges shall be provided for connection of flush floor trunking to vertical trunking to
maintain the cross sectional area of compartments with 50 mm minimum radius.
Under floor trunking shall be to BS 4678: Part 2, gauge of metal to Table 1 BS 4678,
degree of protection Class 3.
All sheet steel materials shall be hot dipped galvanized.
Service outlet boxes and junction boxes shall be constructed from sheet steel with same
finish as trunking. Continuity and segregation of compartments shall be maintained
through boxes, with flyovers where necessary. Service outlet boxes shall be provided
with separate and segregated access to outlets associated with each wiring
compartment. Cable guard or grommet shall be provided to each section. Spigots or
adaptors shall be incorporated on boxes for connection to trunking or conduit as
appropriate. Frames shall be adjustable on each corner, and lids recessed as indicated.
Frame and lids for service outlet boxes and junction boxes, shall be suitable to accept
type of floor covering specified.
Page 20
Surface trunking constructed of insulating materials shall conform to BS 4678: Part 4.

Material as indicated with temperature tolerances BS 4678: Part 4, Table 1 (-5+60C).
Proprietary suspension systems shall be provided comprising channel sections with
return lips and compatible fixing accessories of materials to BS EN 10162 or BS EN
10210 and/or slotted angles to BS 4345.
All steel components such as studding, bolts and steel screws, bolts, nuts and washers
shall be either cadmium plated and passivated or zinc electroplated after manufacture.
Metal fixing components likely to deteriorate and/or cause damage through electrolytic
action shall not be used.
All continuous runs of cable containment systems shall be electrically continuous.
1.1.2
Electrical Accessories
1.1.2.1
Common Requirements
Accessories shall be as detailed in the particular specifications and shown on drawings in
accordance with the following standards:
Enclosure box to BS 4662 for recessed

Enclosure box to BS 5733 for surface
Degree of protection shall be (to BS EN 60529):
Minimum of IP20 Interior
Minimum of IP54 Exterior

Hazardous area classification shall be to BS EN 60079: Part 14, BS EN 60079: Part 1
and intrinsic safety to BS EN 50020.
Degree of mechanical protection shall be to BS EN 62262.
Cover plates shall be overlapping unless otherwise specified.
Enclosure material and finish shall match conduit system. Enclosures shall be recessed
or surface as specified elsewhere.
Accessories shall sustain high temperature and of polycarbonate/thermoset material
which shall not melt or change in colour with heat/change in climate conditions.
1.1.2.2
Interior Lighting Switches

Units shall satisfy the requirements of BS EN 60669: Part 1.
Switches shall incorporate rocker bars unless otherwise specified. For emergency lighting
a secret key switch shall be used with rocker bars as other switches in that area. If
dimmers and/or press switches are shown on drawings then they shall be of the same
rocker bar pattern as the switches in that area.
Rating of all the switches shall be 15 A. Mounting shall be on an adjustable steel grid. All
switches shall have a snap action micro gap mechanism. Pole configurations shall be as
indicated on the drawings.
Earthing terminal shall be integral within switch box and on the switch plate, and where
grid switches are used, blank inserts shall be provided in all spare ways.
Dimmers shall be rocker or rotary type.
Page 21
Switches shall be grid type with 50% de-rating factor applied for the fluorescent lighting
loads.
1.1.2.3
Pull Cord Switches

Rating of all the switches shall be 16 A for lighting circuits and 40 A to 45 A for showers,
fans etc as specified. Mounting shall be surface. All switches shall have a snap action
micro gap mechanism.
Earthing terminal shall be integral within switch box and on the switch plate.
1.1.2.4
Exterior Lighting Switches

Switch type shall be either rocker bar with sealed-in plastic membrane or rotary disc or
lever operating through sealing gland. Rating of all switches shall be 15 A. Action shall be
two position, unless otherwise stated. Enclosure pattern shall be weatherproof and shall
be surface, unless otherwise stated. Enclosure material shall be galvanized cast iron or
impact resistant moulded plastic.
Earthing terminal shall be integral within switch box and on the switch plate.
1.1.2.5
Time Switches
Units shall satisfy the requirements of BS EN 60730: Part 2-7.
Time switch type shall be quartz stabilized motor with 30-hour spring reserve or quartz
stabilized solid state with a minimum of 50 hour nickel cadmium battery backup unless
otherwise specified.
Enclosure shall be dustproof sheet steel or impact resistant moulded plastic with viewing
panel and arranged for conduit entry, unless otherwise indicated.
1.1.2.6
Luminaire Connectors
Units shall be load-carrying captive cord grip type plug/socket, with clip on cover, to BS
5733 or BS 546 (3 or 4 pin as appropriate).
Load carrying capacity shall match connected luminaire.
1.1.2.7
Isolating Switches
Isolating switches shall be provided for fixed appliances, with utilization category and
making capacity as indicated, to satisfy the requirements of BS EN 60669: Part 1 or
BS EN 60947: Part 3.
Mounting shall be on an adjustable steel grid, with engraved front plate to indicate
equipment served by name and circuit designation.
Earthing terminal shall be integral within switch box.
1.1.2.8
Fuse connection units

Units shall satisfy the requirements of BS 1363: Part 4.
Engraved front plate shall indicate equipment served, with pole configuration DP switched
or unswitched as shown on the drawings.
Page 22
Fuses shall be BS 1362 sized as indicated and to suit appliances. Configurations of Neon
indicators and cord outlets or grips shall be as detailed elsewhere.
1.1.2.9
Socket Outlets
Units shall satisfy the requirements of BS 1363 for general purpose domestic/commercial
type outlets and industrial socket outlets to BS EN 60309: Part 1.
Socket outlets shall be single or twin and switched or unswitched as shown on drawings.
The rating shall be 13 A or as shown on drawings.
1.1.2.10 Cooker Control Unit

Cooker unit shall satisfy the requirements of BS 4177, with integral 13 A switched socket
outlet and pilot light and with a pole configuration of DP switched. The rating shall be 45
A. This shall be protected by 30 mA ELCB.
1.1.2.11 Flexible Cord Outlets
Units shall satisfy the requirements of BS 5733 and BS EN 61058: Part 2-1.
Engraved front plate shall indicate equipment served. Rating shall be 20 A for all outlets
except cooker and for cooker outlets 45 A. Pole configuration shall be DP & E.
1.1.2.12 Telephone/IT Outlet Sockets
Units shall satisfy the requirements of BS 6312: Part 2 or RJ 45, LJU and the
requirements of the local company/provider regulations.
Size shall be standard unless otherwise indicated. Circuit configurations shall be as
indicated on drawings. Connections shall be insulation displacement type unless
otherwise indicated.
1.1.2.13 Aerial Sockets
Units to satisfy the requirements of BS 3041: Part 2
Circuit configurations (single or dual or TV and/or FM) shall be as indicated on drawings.
Connections shall be insulation displacement type unless otherwise indicated.
1.1.2.14 Low Voltage Isolating Transformer
Units shall satisfy the requirements of BS EN 61558, BS EN 61558: Part 2-15 (in medical
locations).
The configuration shall be single phase, double wound, with rating input 230 V/ with an
output (kVA) as indicated elsewhere, and as in the following Table.
Table 2 Output of Low Voltage Isolating Transformer
Type
V1
Output Voltage
10 V
V2
V3
24 V
110 V/24 V dual
Description
For power tools in plant rooms with plug and socket
For portable lights in plant rooms
For power tools and portable lights in plant rooms
1.1.2.15 Shaver Points

Shaver points shall be provided, internally switched by plug insertion in accordance with
BS 4573, BS EN 61558: Part 2-9, and as per Electricity Distribution Directorate rules and
Page 23
regulations, and with engraved input and output voltages and '
SHAVERS ONLY'
, and of
rating 20 VA.
Shaver points shall consist of double wound single phase transformer 230 V/230 V and
110 V to BS EN 61558, with Internal overload protection.
Samples of plate finishes shall be provided for decorative/front of house areas.
1.1.2.16 Ceiling Fans
All ceiling fans shall comply with the IEE Regulations, and in particular, with the
requirements for earthing and bonding. All ceiling fans shall be provided with safety steel
wire.
1.1.3
Lighting and Emergency Lighting
1.1.3.1
Luminaire Construction
The following classifications of general luminaries shall conform to BS 4533, BS EN
60598 and IEC 60598:
General luminaries
Recessed luminaries
Street Lighting
Floodlighting
Luminaries with transformers
Air handling luminaries
Emergency luminaries (also BS 5266, BS EN 60598: Part 2-22,
BS EN 1838, ICEL 1003 and the requirements of NFPA 101)
Underwater luminaries (fittings to BS EN 60598 and enclosures to BS EN
60529 (minimum: IPX8), control gear to be via SELV transformers.
Fluorescent lamps in accordance with BS EN 60081.
Starters for Fluorescent lamps to BS EN 60155.
Track lighting systems shall comply with BS 4533, BS EN 60570.

Photometric measurements for luminaries shall be derived in accordance with
BS EN 13032.
EMC emissions and EMC immunity of light fittings shall comply with the requirements of
BS EN 55015, BS EN 61000 and BS EN 61547 respectively.
Disturbance in the supply system shall be governed by EN 60555 and BS EN 61000.
Columns for the use in external lighting applications shall be manufactured from steel to
BS EN 40, hot dipped galvanised to BS EN ISO 1461 or of aluminium and roots are to be
bitumen coated. Cut-outs utilised for external lighting columns and similar items shall be
to BS 7654.
Where high voltage lighting systems have been used such as neon or cold cathode, a
means of isolation shall be provided for use by the fire service in the event of an
emergency. This firemans switch shall be located at high level at the entrance to the
premises.
1.1.3.2
Control Gear
The following table indicates the type of control gear and its corresponding code:
Page 24
Table 3 Device Type, Fitting and Applicable Standards

Device Type
Ballasts
Transformers
Starters and Ignitions
Capacitors
1.1.3.4
Fitting Type
For Fluorescent
For Discharge
For DC electronic Fluorescent
For AC electronic Fluorescent
Electronic Step-down
SELV transformers
Electronic Starters
Capacitor used for lamp circuits
Applicable Standard
BS EN 60921
BS EN 60923
BS EN 60925
BS EN 60929
BS EN 61047
BS EN 61558
BS EN 60927
BS EN 60149
Luminaire Bodies
Luminaire body and diffuser systems shall be constructed to BS EN 60529 (IEC 60529)
Classification of Degrees of Protection by enclosures with respect to the ingress of dust
and water.
Additional requirements in terms of impact resistance shall be in accordance with
BS EN 62262.
Fire retardant housings to emergency escape luminaries shall comply with EN 60598:
Part 2-22.
1.1.3.5
Luminaries for Hazardous Environments

Hazardous areas are classified into zones according to the probability of the presence of
flammable atmospheres as outlined in BS EN 60079 for gases and BS EN 61241 for
dusts.
Table 4 Classification of hazardous environments
Zone Classification
Zone 0 (gases) &
Zone 20 (dusts)
Zone 1 (gases) &
Zone 21 (dusts)
Zone 2 (gases) &
Zone 22 (dusts)
Applicable Standard
Area in which explosive mixture is continuously present
or present for long periods.
Area in which explosive mixture is likely to occur in
normal operation.
Area in which explosive mixture is unlikely to occur in
normal operation and if it occurs it will exist only for a
short time.
Gases and vapours are classified into Groups as outlined in BS EN 60079. Guidance on
requirements for combustible dusts is given in BS EN 61241 and BS EN 50281.
Requirements for apparatus for use in the presence of combustible dusts are given in BS
EN 50281.
The combination of the hazardous zone and the classification, the gas group or dust
classification, temperature classification and environmental conditions, determines the
protection requirements and hence the type of electrical installation that is necessary to
be installed. Protection requirements are detailed in the British Standards.
Equipment shall be selected for the type of protection that is required and shall comply
with relevant British Standards.
1.1.3.6
Central Battery Lighting System

The MEP Contractor shall ensure that the Emergency Lighting System and all of its
components are be manufactured by an ISO 9001/9002 certified company to comply with
BS 5266, BS EN 1838, EN 50171, EN 50172 and the local Civil Defence requirements.
Page 25
The systems shall consist of the following components:
Central Battery Unit Cabinet

Full Wave Controlled Thyristor/Diode Bridge rectifier
Charger and control systems
Automatic changeover contactors (BS 764)
Inverter (less than 3% harmonic distortion into linear load)
Integral display panel
Batteries (integral to CBU or in adjacent cabinet or open racks dependent
upon design)
Sub circuit monitoring
Central control and monitoring PC (to latest standards)
Final details of the emergency lighting central battery system (where applicable), shall
comply with the particular specification, schedules of equipment and detailed design
drawings).
1.1.4
Fire Safety
1.1.4.1
Fire Detection and Alarm Systems

Fire detection and alarm systems shall be provided in accordance with BS 5839,
BS EN 54, NFPA 72 and the requirements of the Civil Defence Authority.
The power supply shall normally be 24 V DC derived from the mains via bridge
rectifier/transformer equipment, but in the event of a mains failure the system shall
operate from a nickel cadmium battery system for a minimum of 24 hours, after which
sufficient capacity should remain in the batteries to operate the system during a full fire
condition for a further period of 3 hours.
The requirements of the power supply equipment shall be in accordance with the
requirements of BS EN 54: Part 4.
Fire alarms shall be inspected and tested in accordance with the manufacturers
recommendations at the end of installation and prior to handover. The inspection and
testing shall be witnessed by the Engineer. The Engineer must be given at least 2 weeks
notice prior to testing. The Engineer may wish to invite others to witness the testing.
Inspection and test results will be documented and submitted to the Engineer for
approval.
1.1.4.2
Basic Components and Wiring

Basic components and wiring shall comply with the standards listed in Table 5.
Table 5 Components and Applicable Standards
Component
Point type (rate of rise) heat detector
Point type (fixed temp) heat detector
Point type smoke detectors
Beam detectors
Flame detectors
Manual call points
Sounders
Components for gas extinguishing systems
Mineral insulated copper covered cable
(MICC)
Cables to maintain circuit integrity under
fire conditions
Applicable Standard
BS EN 54: Part 5
BS EN 54: Part 8
BS EN 54: Part 7
BS 5839: Part 5
BS EN 54: Part 10
BS EN 54: Part 11
BS EN 54: Part 3
EN 12094: Part 1
BS EN 60702
BS 6387, meeting at least the
requirements for categorisation as
AWS or SWX
Page 26
1.1.4.3
Fire Alarm Interfaces

Fire alarm interfaces shall be provided as detailed in the particular specifications and on
the drawings to operate third-party equipment or receive information from third-party
equipment where appropriate.
The purpose of the interface shall be either to operate or cease operation of items of
plant and equipment as required by the cause and effect strategy or to cause the fire
detection and alarm system to raise a warning or alarm status as required.
Interfaces may be included for the following systems (non exhaustive list):
1.1.4.4
Air handling units

BMS
Elevators, escalators or travellators
Fans
Shut off valves
Smoke dampers
Doors
Smoke curtains
Gas monitoring systems
Voice Evacuation and PA Systems

Where indicated on the drawings and in the particular specification and in accordance
with the requirements of the Civil Defence Authority, fire alarm public address and voice
alarms, shall be provided, which systems shall comply with the requirements of BS EN
60849, BS EN 54: Part 2 and 4 and BS 5839: Part 8 and the requirements of NFPA 72.
1.1.4.5
Specialist Engagement
A specialist shall supply, install, test, commission and provide maintenance during the
defects liability period.
1.1.5
Engineering Safety
1.1.5.1
Electric Shock Protection

Electric shock protection shall be in accordance with the requirements of BS 7671 and
the Electricity Directorate: Regulations for Electrical Installations.
1.1.5.2
Earthing and Bonding

Earthing and bonding of the electrical services installation shall comply with the following
British Standards and Codes of Practice:
BS 2754 Construction of electrical equipment for protection against electric

shock.
BS EN 62305 Protection against lightning.
BS 7430 Code of Practice for earthing.
BS 7671 Requirements for electrical installations.
Where pipes etc are to be bonded, the cable shall be connected to an adjustable metal
clamp complying with BS 951 for use with variable sizes of water and/or gas pipe.
Approved warning labels shall be fixed to each earth termination or bonding connection to
structural steel, water or gas pipes etc, durably marked with the words Safety Electrical
Connections Do Not Remove.
Page 27
Where metal conduit, trunking, cable sheaths and/or armouring is employed as part of the
earthing system, all joints, terminations and connections shall be constructed to afford a
low impedance path for fault currents. All joints and connections shall be suitably
protected to prevent deterioration caused by bi-metallic or other corrosion. The cross
sectional area of the material shall comply with the requirements of BS 7671.
1.1.5.3
Lightning Protection
Where demonstrated by the results of calculation, the structure shall be protected by a
lightning protection system in accordance with the requirements of BS EN 62305.
The system shall comprise an air termination(s), down conductor(s), testing joint(s), earth
termination(s) and earth electrode(s). Steel reinforcing in columns shall not be used as a
down conductor unless their continuity and current carrying capacity is verified and the
reinforced connections are welded and independently verified all to the approval of the
Engineer.
The materials for the component parts of the lightning protective system shall be those
detailed in BS EN 62305 and BS EN 50164.
1.1.5.4
Cathodic Protection
Where indicated in the particular specification and on the drawings cathodic protection
systems shall be provided to protect the reinforcement within the building structure in
accordance with BS EN 12696.
1.1.5.5
Facilities for the Disabled

Facilities for the disabled shall be provided in accordance with the requirements of
BS 8300 where indicated in the drawings and accompanying particular specification.
1.1.5.6
Electromagnetic Compatibility
Generally all products to be utilised within the systems proposed for installation shall
conform to the requirements of BS EN 61000/IEC 61000 with respect to electromagnetic
compatibility.
Power transformers shall comply with the requirements of BS EN 62041.
Radio and TV systems shall conform to BS EN 60728.
UPS systems shall comply with the requirements of BS EN 62040: Part 2 with respect to
EMC requirements.
Consideration shall be given to PD 1001 with respect to electromagnetic compatibility for
structured cabling systems.
1.1.5.7
Harmonic Monitoring and Power Conditioning

Where included within the particular design specification and drawings, harmonic filtering
equipment and monitoring equipment shall be provided.
Any monitoring and conditioning equipment shall conform to the requirements of
EN 61000 (relevant parts) and IEEE 519.
The system may consist of active or passive equipment, dependent upon the application
and type of installation being served and this will be addressed within the particular
design.
Page 28
1.1.5.8
Cable Certification Marking and Terminal Identification

Cables shall have CENELEC cable certification marking or if included in British
Approvals Service for Cables (BASEC) in accordance with BASEC regulations.
All cables, other than final sub-circuit wiring enclosed in conduits or trunking shall be
provided, with labels fixed at each end of cable either side of wall and floor penetrations
at approximately 12 m intervals at convenient inspection points by means of nonreleasable plastic straps, minimum width 4 mm. Labels shall show the reference number
of cables.
Switchgear and control gear element terminals shall be marked in accordance with
BS 5472 (EN 50005) and BS 6272 (EN 50042). A unique reference shall identify each
element in the switchgear or control gear, marked on or adjacent to each element. Each
terminal shall be identified for connection to external wiring or cabling, using a reference
system complying with BS EN 60445 based on the element reference and the
appropriate element terminal reference.
Adjacent to terminals, lettered or numbered ferrules or sleeves to BS 3858 shall be used
to mark each auxiliary conductor or control cable core with the identity of the terminal to
which it is connected and the reference of plant or equipment to which it is connected
and the identity of the terminal at the remote end. Main circuit conductors shall be
identified in accordance with BS 7671 (IEE Wiring Regulations). All identification of
terminals and conductors shall be recorded and included on record drawings and in
operation and maintenance documentation
1.1.6
Security and Access Control
1.1.6.1
Intruder Detection System

Where indicated in the drawings and specification, an intruder detection system shall be
provided in accordance with BS EN 50131: Part 1.
Continuous monitoring of the system shall be performed by the alarm control panel in the
set and un-set mode of operation. The requirement for automatic police response shall be
as per the particular project requirements.
Requirements for integration with other alarm systems and security systems shall be in
accordance with the requirements of BS 8418. Integration with the CCTV system shall be
as BS 8418.
The control panel shall be provided with integral battery backup for a duration as
indicated in the standard, dependent upon the classification of the system. The power
supply shall be in accordance with BS EN 50131: Part 6.
Digital communications and direct line signalling shall comply with EN 50136: Part 1-3 &
BS EN 50136: Part 2-3 and BS EN 50136: Part 1-2 & BS EN 50136: Part 2-2
respectively.
1.1.6.2
Basic Components and Wiring

Basic components and wiring shall comply with the standards as used in Table 6 below:
Page 29
Table 6 Components and Applicable Standards

Component
Acoustic detectors
Beam interruption detectors
Captive proximity detectors
Deliberately operated devices
Passive infra red detectors
Radio wave Doppler detectors
Ultrasonic detectors
Vibration detectors
Cabling
1.1.6.3
Applicable Standard
BS 4737: Part 3.6
BS 4737: Part 3.12
BS 4737: Part 3.13
BS 4737: Part 3.14
BS 4737: Part 3.7
BS 4737: Part 3.4
BS 4737: Part 3.5
BS 4737: Part 3.10
BS 4737: Part 3.30
CCTV System
Where indicated in the drawings and specification, a CCTV system should be provided in
accordance with BS EN 50132: Part 7.
The systems shall consist of surveillance equipment, controller and control matrix,
telemetry transmitters and receivers, monitors (CRT, plasma or LCD as required) and
data collection equipment (DVR, VR, server).
Cameras shall be of the static or pan tilt zoom type, covert or standard dependent
upon the requirements of the project. Housings shall be suitable for the location that they
are to be installed.
Picture quality, colour, size and frame rate shall be determined in the particular
specification.
Cabling medium shall be either RG/59 or UTP cables as recommended by the supplier.
Power supplies shall be provided as required by the manufacturer of the CCTV systems,
these power supplies shall serve an individual item of equipment or a group of equipment
as required. The use of power supplies with variable outputs may be utilised where
voltage drop may be problematic.
The power supplies shall be either supported by UPS, standby power circuits connected
to a generator or by integral battery backup. The final requirements resulting from a loss
of normal service electrical supply shall be in accordance with the particular specification.
1.1.6.4
Access Control System

Access control system including audio intercom and video intercom systems shall
conform to the requirements of BS EN 50133: Part 1 and in accordance with BS EN
50133: Part 7.
The system shall consist of locks, audio visual interfaces, user identification devices
(proximity cards, swipe cards, and so on), readers, keypads, power supply units and
control system devices (field and headed).
Equipment shall be selected with appropriate IP protection for its location.
The system shall monitor all field controllers all of the time, and the systems shall be
capable of generating a log of usage and also warnings and alarms as required.
Power supplies shall be provided as required by the manufacturer of the access control
system, these power supplies shall serve an individual item of equipment or a group of
equipment as required. The use of power supplies with variable outputs may be utilised
where voltage drop may be problematic.
Page 30
The power supplies shall be either supported by UPS, standby power circuits connected
to a generator or by integral battery backup. The final requirements resulting from a loss
of normal service electrical supply shall be in accordance with the particular specification.
1.1.7
Audiovisual / Telecommunications
1.1.7.1
Telecommunications
Telephone cabling and equipment supply and installation shall be carried out by an
approved Bahrain Telecommunications Company contractor specialising in
telecommunications installations.
All telephone related installations shall be carried out in accordance with the Bahrain
Telecommunications Company standard specifications and regulations together with this
specification and the project drawings and particular specification.
Telecommunications equipment and telecommunications cabling shall comply with the
requirements of BS 7671.
Supply and install land cableways, empty conduits with draw wires, trunking, telephone
points and outlets, PVC ducts, telephone junction boxes and manholes shall all be as
required on the project drawings.
Telephone outlets shall be of the same pattern as the standard electrical accessories and
installed at a similar height.
1.1.7.2
Structured Cabling Systems

The structured cabling system shall comply with the following standards as applicable to
the project:
BS EN 60950
BS EN 50173 and 50174
ISO/IEC 11801
ANSI/EIA/TIA relevant standards
A structured cabling system shall be provided, where indicated in the drawings and
specifications, for telephone and computer networks, including distribution frames, patch
panels, cabinets, patch cords, outlets, adapters, conduits, PVC ducts and junction boxes
in accordance with the project design documentation.
Backbone cabling shall be optical fibre cabling, either single mode or multimode.
Exact details of the structured cabling systems shall be referred to the particular
specification.
The client wide area network connections shall be arranged with the service provider in
accordance with the clients requirements.
All data communication system equipment shall be compatible, and does not adversely
affect any other equipment installed in the same location.
1.1.7.3
Public Address System

A public address system shall be provided in accordance with the requirements of BS
6259 where indicated on the project drawings.
Connection to Fire Alarm System shall be in accordance with BS EN 60849 and BS 5839.
Emergency Sound Broadcast shall be to BS EN 60849.
Page 31
A public address and sound amplification specialist shall be engaged to develop design,
supply, install, commission and set to work a public address and sound distribution
system in accordance with BS 6259.
All equipment and systems shall be designed and installed to provide electromagnetic
compatibility within the system and with any other systems installed in the same
locations.
1.1.8
Radio / TV / SMATV
A centralised aerial/antennae system shall be provided, with distribution throughout the
building where indicated in the detailed specification/drawings.
All cabling, antennaes and aerials, splitters, distribution amplifiers and headed equipment
shall be provided, as required to provide a complete system.
A specialist shall be engaged to develop the design and install, test, commission and
provide maintenance for the duration of the defects liability period. The installation shall
be in accordance with BS EN 60728.
Where the system is a centrally distributed system inclusive of decoders and channel
provision the specialist shall agree with the client the channel list.
1.2
Delivery Control, Handling, Storage and Protection
1.2.1
Delivery
Delivery of all materials brought to site shall be recorded by means of delivery sheets.
All materials shall only be delivered to site after getting the approval of the engineer and
the approval of the materials shall be granted through Material Approval Certificate
(MAC).
These records shall be maintained on site and may be available for review by the
engineer if requested. Items of equipment will not be considered completely on site
unless all accompanying installation documentation and ancillaries are included within the
delivery.
Large plant items and items of large monetary value shall be delivered by the
manufacturer supplier in proprietary crates/packaging using vehicles intended for the
purchase.
The Engineer shall be notified in advance of such large plant items arriving at site to
review the status of equipment and packaging at time of receipt.
All relevant accompanying documentation shall be included with the equipment at the
time of delivery and appropriate checks will be made ensuring the documentation and
delivered items are in accordance with each other.
Where the Contractor obtains material early, for example for financial benefits of early
purchasing, but chooses to store the items off site in his own premises, the above
statements shall remain applicable.
1.2.2
Handling
All materials entering the site shall be handled at all times in a safe manner between
delivery to site stores or from stores to location of final installation.
Handling of all material shall in all instances be in accordance with the manufacturers
recommendations. All material delivered to site shall be accompanied by the relevant
manufacturers data referring to the handling of the item.
Page 32
Particular importance shall be given to the handling of large plant items and large
monetary value items. Any damage caused during to handling of material and plant on
site shall be reported to the Engineer at the earliest possible time.
The Contractor shall ensure that all plant required to move material and equipment is
available on site at the time needed.
1.2.3
Storage and Protection

Agreement for location and size of site stores shall be agreed in advance of mobilising
the site.
Storage of material shall be in accordance with the requirements of the manufacturer.
Particular importance shall be given to items requiring stable climatic conditions
(temperature, humidity and sunlight) to ensure that they are not damaged between time
of supply from the manufacturer and the time at which they are to be installed.
Where required and approved by the Engineer, certain parts of equipment may have to
be installed at a later date than the bulk of the equipment; for example, UPS batteries
may be installed later than the cabinet ensuring that air conditioning is working prior to
their installation.
Storage of material will be in 3 categories which shall include:
Internal storage
Internal storage in climatic controlled environment
External storage
Whilst in storage the Contractor shall ensure the protection of materials, including
security of such material and also the physical protection.
Any such items of equipment delivered to site in crates or containers shall remain in its
packaging until the time of installation, the crates or containers shall be opened to check
the equipment upon arrival at the site, but then re-sealed to prevent damage from
occurring whilst in storage.
Full 24-hour security shall be provided to guard stores of equipment containing high-value
items to the point at which the Contractor plans to install the equipment.
2.
PART 2 METHODOLOGY AND WORKMANSHIP
2.1
Installation
The installation of all material and equipment shall be in accordance with the
requirements of the manufactures in all instances, and Module 01 of this document with
regard to standard items applicable to all packages.
Where a discrepancy arises between the information provided in the Module 01 and this
works section, the information contained herein will take precedence.
The contractor shall ensure that all equipment is supplied complete with all requisite
components to provide a completed system and shall also ensure that any plant,
material, fixings, fuel, and so on, required to complete the installation is obtained to
facilitate the relevant installation.
Prior to installing plant and equipment the Contractor shall satisfy himself that the location
Page 33
is suitable for the installation, free from water and dust and sealed from the external
climatic conditions as required.
Any conditions that may jeopardise the installation shall be bought to the attention of the
Engineer at the earliest possible time.
The installation shall meet the design intention and be in accordance with the approved
shop drawings. Particular attention shall be paid to large plant items where space
provision may be allocated for future use or extensions and where services have been
coordinated on the design drawings/shop drawings, since any deviation from the design
may impact other services.
2.2
Site Inspections, Testing and Commissioning

With respect to the high voltage aspect of the installation, HB 10210 shall be applied.
For low voltage systems, following connection of the equipment and plant, inspection
shall precede testing and shall be carried out prior to energising of the electrical supply.
The electrical inspections shall be in accordance with the requirements of BS 7671,
Section 712 and EDD rules and regulations.
Following satisfactory factory testing, in the presence of the Engineer, and dispatch to
site, at the time of installation the Contractor shall test the complete electrical installation
to ensure the completeness of the installation. Where necessary these tests will be
performed either with the power on or off.
The testing shall be undertaken in accordance with the requirements of BS 7671, section
713, and those of the local electricity authority, and shall include but not be limited to:
Continuity of protective conductors including main and supplementary

equipotential bonding
Continuity of ring final circuit conductors
Insulation resistance
Site applied insulation
Protection by separation of circuits
Protection against direct contact by barrier or enclosure provided during
erection
Insulation of non conducting floors and walls
Polarity
Earth electrode resistance
Earth fault loop impedance
Functional testing
Visual non-destructive testing
In addition to the standard electrical tests listed above, additional tests shall be performed
by the Contractor to ensure the correct operational requirements are met by all
equipment and plant, hardware and software as appropriate.
Where necessary, these tests are to be performed by specialist contractors or by the
manufacturer/supplier representatives.
Where necessary specialist test equipment shall be utilised by the Contractor or his subcontractors, and this requirement shall be deemed to be included in the contract price.
Artificial lighting tests of illumination levels shall be scheduled, indicating average and
minimum lux levels achieved in the working place once wall and floor finishes have been
applied (for reflectances).
Page 34
Emergency lighting levels shall also be tested and scheduled in a similar manner to
BS 5266 and NFPA 101 and the requirements of the Civil Defence.
A testing and commissioning report shall be provided to the Engineer at the completion of
the tests for comment and a final set of testing and commissioning results incorporated in
to the O&M manuals.
2.3
Staff Training
Following satisfactory testing and commissioning of the installation and prior to the
occupation of the building, maintenance staff will be trained by the Contractor in the use
of the equipment and appropriate knowledge of the system.
This training may be performed on site or at Manufacturers premises and shall include
practical and theory based training as appropriate.
Adequate notice shall be given to the Client to ensure the most suitable persons are
available for the training.
2.4
Completion and Handover
2.4.1
General
Irrespective of the time of initial testing and commissioning the Contractor shall ensure
that within the defects liability period he returns to the site and undertakes re-testing of
the identified equipment during peak (summer) load conditions.
Throughout the defects liability period the Contractor may receive notification by the
Client that various faults have arisen in the system. These shall be attended to within the
minimum amount of time.
The Contractor shall carry out a thorough detailed examination of the installations during
the eleventh and twelfth month of the defects liability period and shall put right any
outstanding works or defects that might have occurred under the Defects Liability Period
in the Conditions of Contract.
On completion of such works, and agreement that the requirements of the Conditions of
Contract and Specification have been met, the Engineer will authorize a Certificate of
Making Good Defects.
To facilitate the final handover the client must be in complete possession of all record
information and satisfactory O&M manuals.
When the Contractor has demonstrated to the Engineer and to their complete satisfaction
that the works are operating as intended within the design limits and tolerances of the
manufactured items, then the Engineer will issue a certificate of taking over, subject to
the clearance of any outstanding items or defects within 14 days of the date of the
Certificate. At this time the responsibility for the operation of all the certified works will
pass from the Contractor to the Client or as otherwise agreed with the Engineer.
Record Drawings shall be provided for the systems identified.
Page 35
3.
PART 3 SUMMARY
3.1
Summary of Requirements
3.1.1
Source Approvals
3.1.1.1
Definitions
Supplier Pre-Qualification Documentation:
Adequate information of the suppliers organization to allow pre-qualification shall be
provided.
Specialist Contractor Pre-Qualification:
Adequate information of the Specialist Contractor organization to allow pre-qualification
shall be provided.
Compliance Statement:
Statement or checklist confirming compliance with the Contract shall be provided.
Certified Type Tested Data:
Manufacturers certified type tested data for specific items of equipment or components
shall be provided.
Country of Origin:
Country where item of equipment or component is manufactured shall be stated.
Dimensioned Manufacturers Drawings:
Drawings of the item of equipment indicating all critical or major dimensions shall be
provided.
Associated Shop Drawings:
Shop drawings showing connecting or interfacing services or equipment demonstrating
correct location, positioning and adequate provision for maintenance access, operational
needs and service connections, shall be provided.
Manufacturers Certified Performance Data:
Performance data certified by the Manufacturers R & D section and is not catalogue data
shall be provided.
Copy of Third Party Approvals:
Any necessary applicable third-party approval documentation, such as independent testing
organizations, for example, Fire and Life Safety testing, Underwriters, Laboratory, Loss
Prevention Council, British Board of Agreement, shall be provided.
Programme of Factory Tests and Proposed Dates:
Where applicable, those items of equipment to be factory tested shall be programmed with
agreed dates and shall suit the construction programme.
List of Projects:
Page 36
A list of projects of similar nature on which the item has been successfully installed shall be
provided.
Visits to Similar Installations:
An offer by the Contractor for a visit to similar installations, to allow inspection of the item in
operation, shall be made.
Sample Warranty:
Adequate information of the detailed warranty that will be offered shall be provided in order
to ensure all contractual obligations are met.
Lead Time and Delivery Program:
Full and detailed lead time for an item of equipment showing all time periods within the
delivery period shall be provided. This shall include all necessary transportation times,
customs clearance along with approval periods, manufacturing times testing and
acceptance.
General Installation Data:
Adequate data of installation requirements shall be provided. This shall include handling
and protection requirements and assembly of major components.
Samples:
Samples of specific items shall be provided as directed.
Special Finishes:
Data confirming special finishes on items of plant and equipment such as protective
coatings for saline atmospheres, corrosive atmospheres or specific colours to suit interior
design, and so on, shall be provided.
3.1.1.2
Source Approval Requirements

The information listed in Table 7 shall be submitted. The rows of Table 7 shall be expanded
to include all items of the installation, and expanded list shall be to the approval of the
Engineer.
Page 37
LV Switchgear Components
Protective Devices
Special Finishes
Sample
General Installation Data
Lead Time and Deliver Program
Sample Warranty
Visit toe Similar Installation
Detailed List of Projects on Which Item has been used
Program of Factory Tests
Copy of Third Party Approvals
Manufacturers Certified Performance Data
Associated Shop Drawings
Dimensioned Manufacturers Dregs
Country of Origin
Certified Type Tested Data
Compliance Statement
Specialist Contractor Documentation
Supplier Pre-Qualification Documentation
Table 7: Summary Requirements for Type Approval
Summary Requirements for Type Approval
UTILITY DISTRIBUTION
STANDBY GENERATION
LV DISTRIBUTION
and
Power Factor Correction
Page 38
Special Finishes
Sample
Sample Warranty
Country of Origin
Cabling and Busbar Systems
Cable Containment
Electrical Accessories
Fire Safety
Engineering Safety
Page 39
Special Finishes
Sample
Sample Warranty
Country of Origin
Audio-Visual / Telecommunications
Public Address System
Page 40
3.1.2
Delivery Control, Storage, Handling and Protection
3.1.2.1
Definitions
Method Statement:
All necessary data shall be provided to demonstrate the correct delivery control, storage,
handling and protection
Delivery Documentation:
Any necessary documentation, including custom clearances, inspection reports, prior to
shipping, after shipping and transport company paperwork, and so on, shall be provided.
Hazard/ Risk Data Sheet:
Adequate hazard and risk data identifying any physical, chemical, biological or other such
hazards associated with the item being delivered shall be provided. This shall include all
necessary procedures for eliminating hazard or reducing risk
Request for Inspection:
Inspection shall be made when item first delivered to site or at agreed storage facility.
Delivery Inspection Condition Report:
Full documentation shall be provided in the form of a report on the conduction of the
delivered item. This shall include photography.
Ancillaries Included:
Any ancillaries, spare parts, components, tools, ad so on, delivered with the item required
for assembly or installation shall be itemised, for example, temperature sensors and energy
meter.
Storage:
Internal, external air conditioned or secure storage or a combination for the delivered item
shall be provided.
Factory Inspection and Testing Report, Setting to Work Procedure O&M Instructions, and
Warranty:
All necessary documentation shall be provided at the time of delivery. Original copies
shall be provided and shall be issued to the Engineer. These documents shall form the
basis of the overall record documentation.
3.1.2.2

The information listed in Tables 8 and 9 below shall be submitted. The rows of Tables 8 and
9 shall be expanded to include all items of the installation, and expanded list shall be to the
approval of the Engineer.
Page 41
Warranty
O&M Instructions
Setting to Work Procedure
Factory Inspection and Testing Reports
Secure Storage
Air Conditioned Storage
External Storage
Internal Storage
Ancilllaries Included
Delivery Inspection Condition Report
Request For Inspection
Hazard / Risk Data Sheet
Delivery Documentation

Method Statement
Table 8: Summary Requirements for Delivery Control, Handling Storage and Protection
Summary Requirements for Delivery Control, Handling Storage and Protection
UTILITY DISTRIBUTION
STANDBY GENERATION
LV DISTRIBUTION
Fire Safety
Engineering Safety
Page 42
Warranty
O&M Instructions
Factory Inspection and Testing Reports
Secure Storage
Air Conditioned Storage
External Storage
Internal Storage
Ancilllaries Included
Delivery Inspection Condition Report
Request For Inspection
Hazard / Risk Data Sheet
Delivery Documentation

Method Statement
Table 8: Summary Requirements for Delivery Control, Handling Storage and Protection
Summary Requirements for Delivery Control, Handling Storage and Protection
Audio-Visual / Telecommunications
Page 43
Schedule of Outstanding Works
Practical Completion Statement
List of O&M Manual Headings
Lifting and Access Equipment Test Certificates
Testing Equipment Calibration Certificates
Record / Document Final Commission Measurements
Commissioning Procedure
Regulation Procedure (Using Design Parameters)
Program of Site Tests with Dates
Schedule of Progress Inspections
Site Installation Risk Assessment
Shop Drawings
Method Statement for Installation And Quality of

Workmanship
Specialist Installation Contractor Confirmation
Table 9: Requirements for Methodology and Workmanship for Installation
Requirements for Methodology and Workmanship for Installation
Utility Distribution
Standby Generation
LV Distribution
Page 44
Shop Drawings

Workmanship
Table 9: Requirements for Methodology and Workmanship for Installation
Fire Safety
Engineering Safety
Page 45
Shop Drawings

Workmanship
Table 9: Requirements for Methodology and Workmanship for Installation (Contind)
Audio Visual / Telecoms
Radio / TV / SMATV
Page 46
3.1.3
Completion and Handover
3.1.3.1
Definitions
All record documentation collected throughout the contract duration shall be provided. The
records shall be indexed and collated. The records shall include as scheduled:
Final commissioning measurement data

Test reports
Inspection reports
All Method Statements and Installation procedures
Final /last material and shop drawing submittals
Final originals of standard one year and extended warranties
Record drawings
Operating and Maintenance instructions
Planned preventive maintenance schedules
Emergency contact details / telephone numbers
Service contracts
Staff training schedule
Final handover statement
During and at the end of the defects liability period the following shall be provided:
Recommissioning schedule.
All equipment and systems shall be recommissioned during the defects liability period. A
project finishes at any time in the calendar year and the commissioning may not be in
optimal conditions as either peak or minimum part load conditions are only experienced
or achieved full occupancy.
Final handover report.
This is any amendment to the initial handover report and shall include the results of any
re-commissioning, completion and rectification of any defects, status of the condition and
maintenance of the systems at the end of the defects liability period.
3.1.3.2

The information listed in Table 10 shall be submitted. The rows of Table 10 shall be
expanded to include all items of the installation, and the expanded list shall be to the
approval of the Engineer.
Page 47
Final handover report
Mid-Liability Period Re-commissioning schedule
Initial Handover Statement
Service contracts
Emergency Contact details (Phone numbers)
Operating and Maintenance Instructions
Record drawings
Final originals of warranties (extended)
Final originals of of warranties (Standard 1 year)
Final Material and shop drawing submittals
Method Statements and Installation Procedures
Inspection Reports
Test Reports
Final Commissioning Measurements and data
Table 10: Requirements for Completion and Handover
Requirements for Completion and Handover
Utility Distribution
Standby Generation
LV Distribution
Page 48
Service contracts
Record drawings
Inspection Reports
Test Reports
Table 10: Requirements for Completion and Handover (Contind)
Fire Safety
Engineering Safety
Page 49
Service contracts
Record drawings
Inspection Reports
Test Reports
Table 10: Requirements for Completion and Handover (Contind)
Audio Visual / Telecoms
Radio / TV / SMATV
Page 50
3.1.4
References
Reference
Title
BS 88
Low-voltage fuses. Supplementary requirements for fuses

for use by unskilled persons (fuses mainly for household or
similar applications)
Specification for high-voltage busbars and busbar
connections
Specification. Two-pole and earthing-pin plugs, socketoutlets and socket-outlet adaptors
Hot dip galvanized coatings on iron and steel articles
Specification for automatic change-over contactors for
emergency lighting systems
Electrical earthing. Clamps for earthing and bonding.
Specification
Specification for general purpose fuse links for domestic
and similar purposes (primarily for use in plugs)
13 A plugs, socket-outlets and adaptors
13 A plugs, socket-outlets, adaptors and connection units.
Specification for 13 A fused connection units switched and
unswitched
Construction of electrical equipment for protection against
electric shock
Fuel oils for agricultural, domestic and industrial engines
and boilers. Specification
Radio-frequency connectors. Specification for coaxial
unmatched connector
Isolating transformers and safety isolating transformers
Part 2. Specification for transformers for reduced low
voltage systems
Specification for binding and identification sleeves for use
on electric cables and wires
Specification for cooker control units
Specification for slotted angles
Luminaires
Specification for 2-pin reversible plugs and shaver socketoutlets
Boxes for flush mounting of electrical accessories.
Requirements and test methods and dimensions
Cable trunking. Steel surface trunking
Cable trunking. Steel underfloor (duct) trunking
Cable trunking. Specification for cable trunking made of
insulating material
Intruder alarm systems. Specifications for components.
Vibration detectors
Beam interruption detectors
Capacitive proximity detectors
Specification for deliberately-operated devices
Specification for PVC insulated cables for interconnecting
wiring
Intruder alarm systems. Specifications for components Ultrasonic movement detectors
BS 159
BS 546
BS 729
BS 764
BS 951
BS 1362
BS 1363
BS 1363: Part 4
BS 2754
BS 2869
BS 3041: Part 2
BS 3535: Part 2
BS 3858
BS 4177
BS 4345
BS 4533
BS 4573
BS 4662
BS 4678: Part 1
BS 4678: Part 2
BS 4678: Part 4
BS 4737: Part 3.10
BS 4737: Part 3.12
BS 4737: Part 3.13
BS 4737: Part 3.14
BS 4737: Part 3.30
BS 4737: Part 3.5
Page 51
BS 4737: Part 3.6

BS 4999
BS 5000
BS 5266
BS 5308
BS 5467
BS 5472
BS 5583
BS 5733
BS 5839
BS 5839: Part 1
BS 5839: Part 5
BS 5839: Part 8
BS 6207
BS 6259
BS 6272
BS 6312: Part 2.1
BS 6312: Part 2.2
BS 6330
BS 6346
BS 6387
BS 6436
BS 6633
BS 6724
BS 6946
BS 7001

Acoustic detectors
General requirements for rotating electrical machines
Specification for rotating electrical machines of particular
types or for particular applications
Emergency lighting
Instrumentation cables. Specification
Electric cables. Thermosetting insulated, armoured cables
for voltages of 600 V/1,000 V and 1,900 V/3,300 V
Specification for low voltage switchgear and control gear
for industrial use. Terminal marking and distinctive number.
General rules
for industrial use. Terminal marking, distinctive number and
distinctive letter for particular contactor relays
Specification for general requirements for electrical
accessories
Fire detection and fire alarm systems for buildings
Fire detection and fire alarm systems for buildings. Code of
practice for system design, installation, commissioning and
maintenance
Fire detection and alarm systems for buildings.
Specification for optical beam smoke detectors
Fire detection and fire alarm systems for buildings. Code of
practice for the design, installation, commissioning, and
maintenance of voice alarm systems
Mineral insulated cables with a rated voltage not exceeding
750 V
Code of practice for the design, planning, installation,
testing and maintenance of sound systems
for industrial use. Terminal marking. Terminals for external
associated electronic circuit components and contacts
Connectors for analogue telecommunication interfaces.
Sockets for use with plugs specified in BS 6312: Part 1.
Specification for sockets. General requirements
Connectors for analogue telecommunication interfaces.
Sockets for use with plugs specified in BS 6312-1.
Particular requirements for fixed socket-outlets used in
permanent wiring installations
Code of practice for reception of sound and television
broadcasting
Electric cables. PVC insulated, armoured cables for
voltages of 600/1000 V and 1,900 V/3,300 V
Specification for performance requirements for cables
required to maintain circuit integrity under fire conditions
Specification for ground mounted distribution transformers
for cable box or unit substation connection
Method for measurement and reporting of local vibration
data of ship structures and equipment
Electric cables. Thermosetting insulated, armoured cables
for voltages of 600 V/1,000 V and 1,900 V/3,300 V, having
low emission of smoke and corrosive gases when affected
by fire
Specification for metal channel cable support systems for
electrical installations
Specification for interchangeability and safety of a
standardized luminaire supporting coupler
Page 52
BS 7211
BS 7430
BS 7629
BS 7654
BS 7671
BS 7806
BS 7807
BS 7821
BS 7844
BS 7846
BS 7856
BS 7870
BS 8300
BS 8418
BS EN 40
BS EN 54
BS EN 54: Part 2
BS EN 54: Part 3
BS EN 54: Part 4
BS EN 54: Part 5
BS EN 54: Part 7
BS EN 54: Part 8
BS EN 54: Part 10
BS EN 54: Part 11
BS EN 842
BS EN 856
BS EN 1838
Electric cables. Thermosetting insulated, non-armoured

cables for voltages up to and including 450 V/750 V, for
electric power, lighting and internal wiring, and having low
emission of smoke and corrosive gases when affected by
fire
Code of practice for earthing
Specification for 300 V/500 V fire resistant electric cables
having low emission of smoke and corrosive gases when
affected by fire
Specification for single phase street lighting fuses (cutouts) for low-voltage public electricity distribution systems.
25 A rating for highway power supplies and street furniture
Requirements for electrical installations. IEE Wiring
Regulations. Seventeenth Edition
Dry-type power transformers
Code of practice for design, installation and servicing of
integrated systems incorporating fire detection and alarm
systems and/or other security systems for buildings other
than dwellings
Three phase oil-immersed distribution transformers, 50 Hz,
from 50 kVA to 2,500 kVA with highest voltage for
equipment not exceeding 36 kV
Three-phase dry-type distribution transformers 50 Hz, from
100 kVA to 2,500 kVA with highest voltage for equipment
not exceeding 36 kV
Electric cables. 600 V/1,000 V armoured, fire-resistant
cables having thermosetting insulation and low emission of
smoke and corrosive gases when affected by fire
Code of practice for design of alternating current, watt-hour
meters for active energy (Classes 1 and 2)
LV and MV polymeric insulated cables for use by
distribution and generation utilities
Design of buildings and their approaches to meet the
needs of disabled people. Code of practice
Installation and remote monitoring of detector activated
CCTV systems. Code of practice
Lighting columns
Fire detection and fire alarm systems
Fire detection and fire alarm systems. Control and
indicating equipment
Fire detection and fire alarm systems. Fire alarm devices.
Sounders
Fire detection and fire alarm systems. Power supply
equipment
Fire detection and fire alarm systems. Heat detectors.
Point detectors
Fire detection and fire alarm systems. Smoke detectors.
Point detectors using scattered light, transmitted light or
ionization
Components of automatic fire detection systems.
Specification for high temperature heat detectors
Fire detection and fire alarm systems. Flame detectors.
Point detectors
Fire detection and fire alarm systems. Manual call points
Safety of machinery. Visual danger signals. General
requirements, design and testing
Rubber hoses and hose assemblies. Rubber-covered
spiral wire reinforced hydraulic type. Specification
Lighting applications. Emergency lighting
Page 53
BS EN 10143
BS EN 10162
BS EN 10210
BS EN 10257: Part 1
BS EN 10326
BS EN 10327
BS EN 12696
BS EN 12094: Part 1
BS EN 13032
BS EN 13601
BS EN 50020
BS EN 50085
BS EN 50131: Part 1
BS EN 50131: Part 6
BS EN 50132: Part 7
BS EN 50133: Part 1
BS EN 50133: Part 7
BS EN 50136: Part 1-2
BS EN 50136: Part 1-3
BS EN 50136: Part 2-2

BS EN 50136: Part 2-3
BS EN 50164
BS EN 50171
BS EN 50172
BS EN 50173
BS EN 50174
BS EN 50281
BS EN 50288: Part 7
BS EN 50363
Continuously hot-dip coated steel sheet and strip.

Tolerances on dimensions and shape
Cold rolled steel sections. Technical delivery conditions.
Dimensional and cross-sectional tolerances
Hot finished structural hollow sections of non-alloy and fine
grain steels
Zinc or zinc alloy coated non-alloy steel wire for armouring
either power cables or telecommunication cables. Land
cables
Continuously hot-dip coated strip and sheet of structural
steels. Technical delivery conditions
Continuously hot-dip coated strip and sheet of low carbon
steels for cold forming. Technical delivery conditions
Cathodic protection of steel in concrete
Fixed fire fighting systems. Components for gas
extinguishing systems. Requirements and test methods for
electrical automatic control and delay devices
Measurement and presentation of photometric data of
lamps and luminaires
Copper and copper alloys. Copper rod, bar and wire for
general electrical purposes
Electrical apparatus for potentially explosive atmospheres.
Intrinsic safety
Cable trunking systems and cable ducting systems for
electrical installations
Alarm systems. Intrusion systems. General requirements
Alarm systems. Intrusion systems. Power supplies
Alarm systems. CCTV surveillance systems for use in
security applications. Application guidelines
Alarm systems. Access control systems for use in security
applications. System requirements
Alarm systems. Access control systems for use in security
applications. Application guidelines
Alarm systems. Alarm transmission systems and
equipment. Requirements for systems using dedicated
alarm paths
equipment. Requirements for systems with digital
communicators using the public switched telephone
network
equipment. Requirements for equipment used in systems
using dedicated alarm paths
equipment. Requirements for equipment used in systems
with digital communicators using the public switched
telephone network
Lightning protection components (LPC)
Central power supply systems
Emergency escapes lighting systems
Information technology. Generic cabling systems
Installation technology. Cabling installation
Electrical apparatus for use in the presence of combustible
dust
Multi-element metallic cables used in analogue and digital
communication and control. Sectional specification for
instrumentation and control cables
Insulating, sheathing and covering materials for low
voltage energy cables
Page 54
BS EN 50464
BS EN 55015
BS EN 55022
BS EN 55024
BS EN 60034: Part 22
BS EN 60044: Part 1
BS EN 60051
BS EN 60051: Part 1
BS EN 60073
BS EN 60076
BS EN 60079
BS EN 60079: Part 1
BS EN 60081
BS EN 60146
BS EN 60155
BS EN 60228
BS EN 60265
BS EN 60269
BS EN 60269: Part 1
BS EN 60271: Part 200
BS EN 60282
BS EN 60309: Part 1
BS EN 60309: Part 2
BS EN 60332
BS EN 60376
BS EN 60439
BS EN 60439: Part 1
Three-phase oil-immersed distribution transformers 50 Hz,

from 50 kVA to 2,500 kVA with highest voltage for
equipment not exceeding 36 kV. Distribution transformers
with cable boxes on the high-voltage and/or low-voltage
side
Limits and methods of measurement of radio disturbance
characteristics of electrical lighting and similar equipment
Information technology equipment. Radio disturbance
characteristics. Limits and methods of measurement
Information
technology
equipment.
Immunity
characteristics. Limits and methods of measurement
Rotating electrical machines. AC generators for
reciprocating internal combustion (RIC) engine-driven
generating sets
Instrument transformers. Current transformers
Direct acting indicating analogue electrical measuring
instruments and their accessories
Direct acting indicating analogue electrical measuring
instruments and their accessories. Definitions and general
requirements common to all parts
Basic and safety principles for man-machine interface,
marking and identification. Coding principles for indicators
and actuators
Power transformers
Electrical apparatus for explosive gas atmospheres
Explosive atmospheres. Equipment protection by
flameproof enclosures "d"
Explosive atmospheres. Electrical installations design,
selection and erection
Electrical apparatus for explosive gas atmospheres.
Construction, test and marking of type of protection
encapsulation "m" electrical apparatus
Double-capped
fluorescent
lamps.
Performance
specifications
Semiconductor convertors. General requirements and line
commutated convertors
Glow-starters for fluorescent lamps
Conductors of insulated cables
Specification for high-voltage switches
Low-voltage fuses
Low-voltage fuses. General requirements
High-voltage switchgear and control gear. AC metalenclosed switchgear and control gear for rated voltages
above 1 kV and up to and including 52 kV
High-voltage fuses
Plugs, socket-outlets and couplers for industrial purposes.
General requirements
Plugs, socket-outlets and couplers for industrial purposes.
Dimensional interchangeability requirements for pin and
contact-tube accessories
Tests on electric and optical fibre cables under fire
conditions. Test for vertical flame propagation for a single
small insulated wire or cable
Specification of technical grade sulfur hexafluoride (SF6)
for use in electrical equipment
Low-voltage switchgear and control gear assemblies
Low-voltage switchgear and control gear assemblies.
Type-tested and partially type-tested assemblies
Page 55
BS EN 60439: Part 2
BS EN 60445
BS EN 60529
BS EN 60570
BS EN 60598/IEC 60598
BS EN 60598: Part 2-22
BS EN 60669: Part 1
BS EN 60694
BS EN 60702
BS EN 60702: Part 1
BS EN 60702: Part 2
BS EN 60728
BS EN 60730: Part 2-7
BS EN 60793
BS EN 60831: Part 1,
IEC 60831: Part 1
BS EN 60849
BS EN 60898
BS EN 60921
BS EN 60923
BS EN 60925
BS EN 60927
BS EN 60929
BS EN 60947: Part 1
BS EN 60947: Part 2
BS EN 60947: Part 3
BS EN 60947: Part 4-1
BS EN 60947: Part 5-1
Low voltage switchgear and control gear assemblies.

Particular requirements for busbar trunking systems
(busways)
Basic and safety principles for man-machine interface,
marking and identification. Identification of equipment
terminals and conductor terminations
Specification for degrees of protection provided by
enclosures (IP code)
Electrical supply track systems for luminaries
Luminaries
Luminaries. Particular requirements. Luminaries for
emergency lighting
Switches for household and similar fixed electrical
installations. General requirements
Common specifications for high-voltage switchgear and
control gear standards
Mineral insulated cables and their terminations with a rated
voltage not exceeding 750 V
voltage not exceeding 750 V. Cables
voltage not exceeding 750 V. Terminations
Cable networks for television signals, sound signals and
interactive services
Specification for automatic electrical controls for household
and similar use. Particular requirements. Timers and time
switches
Optical fibres. Measurement methods and test procedures
Shunt power capacitors of the self-healing type for AC
systems having a rated voltage up to and including
1,000 V. General. Performance, testing and rating. Safety
requirements. Guide for installation and operation
Sound systems for emergency purposes
Electrical accessories
Ballasts for tubular fluorescent lamps. Performance
requirements
Auxiliaries for lamps. Ballasts for discharge lamps
(excluding tubular fluorescent lamps). Performance
requirements
Specification for performance requirements for DC
supplied electronic ballasts for tubular fluorescent lamps
Specification for auxiliaries for lamps. Starting devices
(other than glow starters). Performance requirements
AC supplied electronic ballasts for tubular fluorescent
lamps. Performance requirements
Specification for low-voltage switchgear and control gear.
General rules
Low-voltage switchgear and control gear. Circuit-breakers
Specification for low-voltage switchgear and control gear Switches, disconnectors, switch-disconnectors and fusecombination units
Specification for low-voltage switchgear and control gear Contactors
and
motor-starters.
Electromechanical
contactors and motor-starters
Specification for low-voltage switchgear and control gear.
Control circuit devices and switching elements.
Electromechanical control circuit devices
Page 56
BS EN 60950
BS EN 61000
BS EN 61000: Part 6-1
BS EN 61000: Part 6-2
BS EN 61000: Part 6-3
BS EN 61000: Part 6-4
BS EN 61008
BS EN 61009
BS EN 61047
BS EN 61049
BS EN 61058: Part 2-1
BS EN 61241
BS EN 61386
BS EN 61537
BS EN 61547
BS EN 61558
BS EN 61558: Part 2-9
BS EN 61558: Part 2-15
BS EN 61558: Part 2-23
BS EN 61810
BS EN 62020
BS EN 62040: Part 1-1
BS EN 62040: Part 1-2
BS EN 62040: Part 2
BS EN 62041
Information technology equipment. Safety

Electromagnetic compatibility (EMC)
Electromagnetic compatibility (EMC). Generic standards.
Immunity for residential, commercial and light-industrial
environments
Immunity for industrial environments
Emission standard for residential, commercial and lightindustrial environments
Emission standard for industrial environments
Residual current operated circuit-breakers without integral
over current protection for household and similar uses
(RCCBs)
Residual current operated circuit-breakers with integral
over current protection for household and similar uses
(RCBOs)
DC or AC supplied electronic step-down convertors for
filament lamps. Performance requirements
Specification for capacitors for use in tubular fluorescent
and other discharge lamp circuits. Performance
requirements
Switches for appliances. Particular requirements. Cord
switches
Electrical apparatus for use in the presence of combustible
dust
Conduit systems for cable management
Cable management. Cable tray systems and cable ladder
systems
Specification for equipment for general lighting purposes.
EMC immunity requirements
Safety of power transformers, power supplies, reactors and
similar products
Safety of power transformers, power supply units and
similar products. Particular requirements for transformers
for Class III handlamps for tungsten filament lamps
similar products. Particular requirements for isolating
transformers for the supply of medical locations
similar. Particular requirements for transformers for
construction sites
Electromechanical elementary relays
Electrical accessories. Residual current monitors for
household and similar uses (RCMs)
Uninterruptible power systems (UPS). General and safety
requirements for UPS used in operator access areas
Uninterruptible power systems (UPS). General and safety
requirements for UPS used in restricted access locations
Uninterruptible power systems (UPS). Electromagnetic
compatibility (EMC) requirements
Power transformers, power supply units, reactors and
similar products. EMC requirements
Electricity
metering
equipment
(AC).
Particular
requirements. Electromechanical meters for active energy
(Classes 0, 5, 1 and 2)
Page 57
BS EN 62262
BS EN 62271
BS EN 62271: Part 102
BS EN 62271: Part 105
BS EN 62305
BS EN ISO 1461
BS IEC 60747: Part 1
BS IEC 60748
BS ISO 3046
BS ISO 8528
DIN 4102: Part 1
DIN 4102: Part 9
DIN 4102: Part 12
EIA/TIA 455
EIA/TIA 492
ICEC 1003
IEC 726
IEC 793
IEC 60076
IEC 60331
IEEE 519
ISO/IEC IS 11801
NFPA 72
NFPA101
TIA/EIA-568B
Electricity
metering
equipment
(AC).
Particular
requirements. Static meters for active energy (Classes 1
and 2)
Electricity
metering
equipment
(AC).
Particular
requirements. Static meters for active energy (Classes 0,
2 S and 0, 5 S)
Electricity
metering
equipment
(AC).
Particular
requirements. Static meters for reactive energy (classes 2
and 3)
Degrees of protection provided by enclosures for electrical
equipment against external mechanical impacts (IK code)
High-voltage switchgear and control gear
High-voltage switchgear and control gear. High-voltage
alternating current disconnectors and earthing switches
High-voltage switchgear and control gear. Alternating
current switch-fuse combinations
Protection against lightning
Hot dip galvanized coatings on fabricated iron and steel
articles. Specifications and test methods
Semiconductor devices. General
Semiconductor devices. Integrated circuits
Reciprocating internal combustion engines. Performance
Reciprocating
internal
combustion
engine
driven
alternating current generating sets
Reaction to fire tests. Ignitability of building products
subjected to direct impingement of flame
Fire behaviour of building materials and elements; seals for
cable penetrations; concepts, requirements and testing
Fire behaviour of building materials and components.
Reliability of electric systems; requirements and testing
Standard Test Procedure for Fibre Optic Fibres, Cables,
Transducers, Sensors, Connecting and Terminating
Devices, and Other Components
Specifications for optical waveguide fibres
Emergency lighting applications guide
Class F insulation system for high- and low-voltage
winding
Optical fibres
Power transformers
Fire-resisting characteristics of electric cables
Recommended practices and requirements for harmonic
control in electrical power systems
Information technology. Generic cabling for customer
premises
National fire alarm code
Life safety code
Commercial
Building,
Telecommunications Cabling
Standard
Page 58
Abbreviations
ACB
ACOP
ACRIB
Air Circuit Breakers

Approved Code of Practice
Air Conditioning and Refrigeration Industry
Board
ADCM
Acoustic Doppler Current Meters
AFMA
Australian Fisheries Management Authority
American Gear Manufacturers Association
AGMA
AISI
American Iron and Steel Institute
AS
Acceptance Strength
ASTA
Association of Short-circuit Testing
Authorities
ASTM
American Society for Testing Materials
ATS
Automatic Transfer Switch
American Welding Society
AWS
BASEC
British Approval Service for Electric Cables
Building Officials and Code Administrators
BOCA
BRE
Building Research Establishment Ltd.
British Standards
BS
BSRIA
Building Service Research and Information
Association
California Bearing Ratio
CBR
CCTV
Close Circuit Television
CECOMAF Comit Europen des Constructeurs de
Matriel Frigorifique
CENELEC Comit Europen de Normalisation
Electrotechnique
Chlorofluorocarbons
CFC
CIBSE
Chartered Institution of Building Services
Engineers
CHW
Chilled Water
CI
Cast Iron
CLW
Cooling Water
CM
Current Margin / Communication cable
Communication cable (Plenum)
CMP
CP
Code of Practice
CPC
Circuit Protection Conductor
CPT
Cone Penetration Testing
CRS
Categorised Required Strength
CRT
Cathode Ray Tube
CRZ
Capillary Rise Zone
CT
Current Transformer
c(UL)
Underwriters Laboratories Incorporated
(Canada)
DEO
Defence Estate Organisation
DFT
Dry Film Thickness
Ductile Iron
DI
DIN
Deutsches Institut fr Normung
DPC
Damp Proof Course
DPDT
Differential Pressure, Differential
Temperature
DS
Durability Strength
DVR
Digital Video Recorder
DW
Ductwork Specification
EA
Exhaust Air
European Computer Manufacturers
ECMA
Association
EA
Exhaust Air
ECMA
European Computer Manufacturers
Association
ECR
Extra Chemical Resistant
EIA
Environmental Impact Assessment/
Electronic Industries Alliance
EMC
EPDM
FA
FBA
FRP
FSC
GANA
GGBS
GMS
GRC
GRP
HCFC
HDPE
HEPA
HFC
HPL
HPPE
HRC
HSE
HSFG
HV
HVCA
ICBO
IGCC
IGE/UP
IP
ISAT
ISO
ITP
KD
kVA
LCD
LED
LPG
LS0H
LSF
LV
MCB
MCC
MCCB
MDF
MDD
MDPE
MEP
MICC
MIO
MMI
MOD
MS
MSDS
MSRPC
N
NDFT
NEMA
NFPA
NRC
NS
Electromagnetic Compatibility
Ethylene-propylene-diene-monomer
copolymer
Fresh Air
Factory Built Assembly
Fibre Reinforced Polymer
Forest Stewardship Council
Glass Association of North America
Ground Granulated Blast-furnace Slag
Galvanized Mild Steel
Glass Reinforced Cement/Glass Reinforced
Concrete
Glass Reinforced Plastics
Hydrofluorocarbons
High Density Polyethylene
High Efficiency Particulate Air
HydroFluoroCarbon
High Pressure Laminate
Higher Performance Polyethylene
High Rupturing Capacity
Health and Safety Executive
High Strength Friction Grip
High Voltage
Heating and Ventilating Contractors
Association
International Conference of Building Officials
Insulating Glass Certification Council
Institution of Gas Engineers Utilization
Procedures
Ingress Protection
Initial Surface Absorption Test
International Standard Organization
Inspection Testing Plan
Kiln Dried
Kilovolt Ampere
Liquid Crystal Display
Light Emitting Diode
Liquid Petroleum Gas
Low Smoke Zero Halogen
Low Smoke and Fume
Low Voltage
Miniature Circuit Breaker
Motor Control Centre
Moulded Case Circuit Breakers
Medium Density Fireboard
Maximum Dry Density
Medium Density Polyethylene
Mechanical Electrical Plumbing
Mineral Insulated Copper Covered Cable
Micaceous Iron Oxide
Man Machine Interface
Ministry of Defence
Micro-silica
Material Safety Data Sheet
Moderate Sulphate Resistance Portland
Cement
Nitrogen
Nominal Dry Film Thickness
National Electrical Manufacturers Association
National Fire Protection Association
Noise Reduction Coefficient
Norwegian Standard
Page 59
O/D
ODP
OFS
OFTEC
O&M
OPC
PD
PE
PFA
PFC
PM
PTFE
PVC
PVC-u
PWTAG
QA/QC
RA
RCCD
RCD
R&D
REFCOM
RPM
RPZ
RTD
RTR
SA
SBCCI
SDR
SIS
SP
SPDT
SRPC
SS
SSPC
TIA
TRA
UL
ULPA
UP
UPS
UTP
UV
Outside Diameter
Ozone Depletion Potential
Oil Fired (Appliance/Equipment) Standard
Oil Firing Technical Association
Operation and Maintenance
Ordinary Portland Cement
Published Documents
Polyethylene
Pulverised Fuel Ash
Power Factor Correction
Project Manager
Polytetrafluoroethylene
Polyvinylchloride
Unplasticised Polyvinylchloride
Pool Water Treatment Advisory Group
Quality Assurance/Quality Control
Return/Recycled Air
Residual Current Circuit Breaker
Residual Current Device
Research and Development
Register of Companies Competent to handle
refrigerants
Reinforced Plastic Mortar
Reduced Pressure Zone
Resistant Temperature Detector
Reinforced Thermosetting Resin
Supply Air
Southern Building Code Congress
International (Incorporated)
Standard Dimension Ratio
Swedish Institute of Standards
Super-plasticizing
Single Pole Double Throw
Sulphate Resistance Portland Cement
Structural Strength
Steel Structures Painting Council
Telecommunication Industry Association
Trussed Rafter Association
Underwriters Laboratories Incorporated
Ultra Low Penetration Air
Unsaturated Polyester Resin
Uninterruptible Power Supply
Unshielded Twisted Pair
Ultra Violet
VC
VR
WBP
W/C
WIS
WP
WRAS
XLPE
Vitrified Clay
Video Recorder
Weather and Boil Proof
Water Cement Ratio
Water Industry Specification
Water Proofing
Water Regulations Advisory Scheme
Cross Linked Polyethylene
Page 60

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STANDARD

Module 16 Electrical Installation

Guidance and General Specifications

Glass and Glazing

Joinery and Carpentry

Internal Finishes including Thermal Insulation

Painting and Decorating (Internal & External)

Structural Steel (and Coatings)

Plumbing and Sanitary

Mechanical Installation in Buildings

Sewerage, Pipelines and Pipework

Sewerage M&E Works

Dredging, Reclamation and Shoreline Protection

Delivery Control, Handling, Storage and Protection 32

PART 2 METHODOLOGY AND WORKMANSHIP

Site Inspections, Testing and Commissioning.. 34

Completion and Handover... 35

Utility Power Distribution

400 V 6% 3 phase, 4 wire, 50 Hz 2% System

BS EN 60076 and IEC 60076 Power Transformers

Where required on the drawings the following shall be provided:

Manual operated fault-making, load-breaking, oil-immersed fused-switch for

Two fault-make, load-break, ON/OFF/EARTH switches for control of the ring

Uninterruptible Power Supply

Transformerrectifier (to BS EN 60146)

A transformerrectifier shall be provided in accordance with BS EN 60146.

6-pulse transformer/rectifier for outputs up to and including 100 kVA

Phase-shifting of input supplies to multi-unit systems shall be incorporated to reduce total

from specified limits of voltage or frequency. Provide manual adjustment of frequency

Temperature rise limits (taking account of expected ambient conditions).

Continuity of protective circuit.

Insulation resistance test

Primary and/or secondary current injection

Operation of protection devices, instruments and measuring devices

Operation of control and monitoring devices

LV Switchgear Components / Protective Devices

DC Output Voltage drop at full load 2%.

The following facilities shall be provided

MCB input protection.

The following meters shall be provided

The following lamp indications shall be provided

1.1.1.10 Air Circuit Breakers

contacts shall be provided, rated a minimum of 10 A 230 V AC wired to external terminals

1.1.1.26 Controls Cabling

Class 2: Electroplated zinc having a minimum thickness of zinc coating of 0.0012

Class 3: Hot dip zinc coated steel to BS EN 10327 or BS EN 10143 and

Surface trunking constructed of insulating materials shall conform to BS 4678: Part 4.

Enclosure box to BS 4662 for recessed

Degree of protection shall be (to BS EN 60529):

Minimum of IP20 Interior

Minimum of IP54 Exterior

Interior Lighting Switches

Pull Cord Switches

Exterior Lighting Switches

Fuse connection units

1.1.2.10 Cooker Control Unit

1.1.2.15 Shaver Points

Lighting and Emergency Lighting

Track lighting systems shall comply with BS 4533, BS EN 60570.

Table 3 Device Type, Fitting and Applicable Standards