Ku Electric Handbook
Ku Electric Handbook
Ku Electric Handbook
Electrical Safety
Planning for
Temporary and
Permanent Service
Installations
Electric Meter
Information
Residential,
Commercial &
Industrial Services
Special Procedures
Standard Drawings
CUSTOMERS GUIDE
Revised 2008
Revised 2010
Preface
Kentucky Utilities Company (KU) provides electric service in a defined service territory in and around the
Kentucky area. The contents of this handbook are intended to address utility provided electric service
issues within the prescribed service territory.
This handbook provides KU and ODP Customers and/or their contractors with important information to
help assure that Customer owned electrical facilities interface safely and reliably with those of the utility.
It presents KU/ODP approved construction methods for facilities, including metering facilities, provided by
the Customer for the utilitys use. It also details certain requirements for the construction of the interface
point between Customer and utility wiring. Additionally, it addresses some important procedural aspects
involved with service modifications, repairs and conversions. Following the instructions in this manual will
help KU/ODP meet your needs in a timely and efficient manner. Although the book covers service
requirements for the most common types of installations, it is an abbreviated guide and does not cover
service requirements for complex or special installations. KU/ODP service representatives are available
to assist Customers in complying with the requirements of this handbook and to provide additional
support that may be required to complete complex or non-standard projects.
The intention of this guide is to meet or exceed the requirements of the Kentucky Uniform Building Code,
National Electrical Code, Kentucky Public Service Commission Rules and Regulations, National Electrical
Safety Code and other relevant publications. However, the information contained herein does not
preempt any of the rules, codes or regulations contained in the aforementioned publications. It is the
Customers responsibility to notify KU/ODP of any conflicts between utility standards and the
requirements of any of the above publications.
The Kentucky Uniform Building Code requires that all customers provided electrical facilities meet the
requirements of the National Electrical Code and any other state or local ordinances in existence at the
time of installation. It also requires that all new electrical facilities and any repairs or modifications made
to existing electrical facilities be inspected and approved by a certified electrical inspector of the
Inspection Authority having jurisdiction. KU/ODP is prohibited from extending or reconnecting permanent
service before the Authorized Inspection Authority has approved all work.
By publishing this handbook, KU/ODP is not assuming liability or responsibility for the Customers
internal wiring, equipment or equipment operation. Furthermore, KU/ODP maintains the right to refuse
service to installations, which do not comply with KU/ODP requirements for service or are found to be
either unsafe or unacceptable to the Authorized Inspection Authority. KU/ODP is not responsible for the
continuing inspection or surveillance of the Customers wiring, equipment or equipment operation.
KU/ODP recognizes that alternate designs may be permissible under governing codes and regulations.
However KU/ODP must grant approval to any alterations or exceptions to the requirements of this guide
prior to construction. KU/ODP reserves the right to modify the requirements found in this handbook
or any of its service policies, procedures and/or standards at any time. It is the responsibility of
the Customer or contractor to ensure that any referenced document is the version currently
approved for use by KU/ODP. It is also the responsibility of the Customer to notify KU/ODP of
any changes to existing wiring, equipment, building structure, electrical loading and/or other
service requirements that may affect safety or electric system performance.
Kentucky Utilities Company & Old Dominion Power Electric Service Handbook
Distribution Operations Asset Management, Electric Policies and Standards
Electrical Safety
Safety First Providing Safe Electrical Service
The health and safety of Customers and employees is our highest priority. We also believe strongly in the concept
that safety is everyones responsibility. KU employees and contractors will not perform any work in areas
considered to be unsafe or install or connect any electrical facilities that are, in the opinion of our employees or
contractors, unsafe or not in compliance with utility requirements or governing codes and regulations. Both KU and
Customer owned electrical facilities must be planned, designed, built, maintained, and operated to minimize the risk
of injury and property damage during construction and throughout the operating life of the facility.
Personal Safety
Downed Or Low Power Lines
At KU, we believe in Safety First, and the safety of our Customers and the public is important to us. We rely on you
to tell us about unsafe conditions such as downed power lines. Power lines can be brought down by equipment
failures or during storms by lightning and high winds, by fallen trees or by other damage such as vehicle accidents.
Never touch, move, or go near any kind of downed or low hanging line - even if it looks harmless.
If you see a downed or low wire, call us at (800) 981-0600 24 hours a day, 7 days a week. Stay away from
the downed or low wires and use extreme caution since there is
no way to know if a wire is an energized electric line or something
else like a telephone or cable television line. You dont have to
touch a downed line to be seriously injured. You can be shocked
just by going too close to a downed line because the earth in the
area around the fallen line becomes energized. Even if you do not
see sparks, you should assume the line is energized. Always
warn others to STAY AWAY from downed lines.
If a person is injured, immediately call 911. Then immediately call
KU/ODP toll-free at (800-981-0600) to report downed lines. NEVER
touch downed power lines or try to move a person or object in contact
with these lines!
Serious injury and even death can result from coming into contact with a
downed electric line. Touching any object, such as a fence, vehicle, building or
even a tree that is in contact with a downed or low line, can also injure you.
Assume that touching anything near to, or in contact with a downed line is just
as dangerous as the downed line itself and stay away. Remember, Be Safe!
Assume every low hanging or downed line is an electric line. Report it as
quickly as possible and KU will send someone to investigate. Stay away and
help keep others away until KU arrives and makes the area safe.
Should a fallen line come into contact with a vehicle, the vehicle itself may
become energized. In many cases the safest thing to do is stay in the vehicle
until help arrives. Keep others away from the vehicle. Any person attempting
to touch or leave the vehicle could be electrocuted. If possible, stay in the
vehicle until KU/ODP has made the line safe. If it is not safe to remain in the
vehicle because of fire or other danger, do not step from the vehicle. Jump
as far away as possible, keeping both feet together. NEVER touch the
vehicle and the ground at the same time. Hop or shuffle your feet in very
small steps to move to safety.
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Contractor Safety
Survey the job site carefully before work begins, identify any safety risks and anticipate potential safety
problems. Hold a safety and or tailgate meeting each day before work begins at each work site to remind
workers what to look out for. Continually warn others about nearby power lines and other electrical hazards.
Consider all overhead lines to be energized power lines, no matter what they look like. Note a hazard zone
around power lines and stay outside of it.
If you must work near lines, barricade or otherwise mark the area off and follow all OSHA required work
practices. When working within what could be an unsafe distance to KU/ODPs electric facilities or that may
otherwise be in violation of federal, state or local regulations, the individual(s) must notify KU/ODP at (800) 9810600. KU/ODP will work with the Customer to ensure the work can be performed safely and may cover, deenergize, or temporarily move its facilities in the work area as deemed appropriated to provide a safer working
environment, provided reasonable advanced notice is given. While covering lines can make a job site safer, it
is not a replacement for safe work practices and is not intended to allow equipment to come too close or
contact lines. KU/ODP reserves the right to recover the cost of any such work when requested by the
Customer.
Before digging in the Lexington area, call Kentucky 811 (Before You Dig), 811 or (1-800-752-6007) to locate
and mark underground lines. Not only will this make work safer, but it also reduces potential costs to repair
damage to KU/ODPs electric lines or those of other utilities. There is no cost to locate underground utilities but
you must call before starting work. Outside of the Lexington area it is the responsibility of the developer of the
project to find out who has buried utilities in the area in question and have them mark their utility. In Virginia call
811 Miss Utility and allow 48 hours before beginning excavation.
Report any activities that could damage power poles, such as excavations that might reduce pole stability by
calling KU/ODP at (800) 981-0600 before work begins. Temporary bracing may be necessary and KU/ODP
may impose a charge to cover the cost for any work required.
Have someone to call KU/ODP at 1 (800) 981-0600 immediately to shut off the power. Call 911 for medical
help if there are injuries. Warn everyone to stay away from the load, guide wires, equipment and anything in
contact with the equipment, all of which could be conducting a deadly amount of electricity.
If you must get out of the equipment because of fire or other danger, jump free rather than stepping off. Never
touch a grounded surface and equipment that is contacting a power line at the same time.
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TABLE OF CONTENTS
ELECTRICAL SAFETY
Safety First Providing Safe Electrical Service .......................................................................................... ii
Personal Safety............................................................................................................................................ ii
Downed or Low Power Lines................................................................................................................. ii
Lines on Vehicles .................................................................................................................................. ii
Electrical Safety, A Practical Guide for Children and Adults ....................................................................... iii
Electric Safety Tips for Children ............................................................................................................ iii
Making Home Improvements ................................................................................................................ iii
Contractor Safety ......................................................................................................................................... iv
About KU
Kentucky Utilities Company (KU) is a regulated electric utility, based in Lexington,
Kentucky, serving customers in 77 Kentucky counties and five counties in Virginia
(under the name Old Dominion Power - ODP).
History
Kentucky Utilities officially began business on December 2, 1912 serving five properties (Versailles,
Lawrenceburg, Somerset, Elizabethtown and Shelbyville). KU acquired Old Dominion Power Company
(ODP) in 1926.
In 1998, KU's parent company, KU Energy, was acquired by LG&E Energy, which owned neighboring utility
Louisville Gas and Electric Company. The acquisition of KU Energy, along with the 25-year lease agreement
with Big Rivers Electric, more than doubled the size of LG&E Energy.
UK-based Powergen bought LG&E Energy in 2000, and in 2002, Powergen was acquired by Germanys
E.ON. In 2003, E.ON transferred LG&E Energy from Powergen to another subsidiary, E.ON US Holdings.
In 2010, PPL Resources of Allentown, Pennsylvania reached an agreement with E.ON AG to purchase E.ON
U.S. PPL Corporation is a large Fortune 500 company with regulated operations and unregulated activities
in the U.S. and the United Kingdom.
Quick Facts
KU serves 485,253 electric customers in Kentucky; ODP serves 29,730 electric customers in
Virginia.
KU's service area covers 6,600 noncontiguous square miles.
KU's total generation capacity is 4,570 megawatts.
Introduction
The Electric Service Handbook Customers Guide is intended to be a helpful reference for Customers
and their builders and electrical contractors who are planning a new electrical service within the Kentucky
Utilities Company (KU) and/or Old Dominion Power (ODP) service territory. It also details requirements for
other types of common electrical work that involves KU/ODP, such as rewiring work, damage repair, and
conversions of electric services from overhead to underground. It provides important information on the
requirements for temporary and permanent electric service for residential, commercial and industrial
installations. Old Dominion Power Company is a unit of the Kentucky Utilities Company (KU), headquartered
in Lexington, Kentucky. All references in this handbook to Kentucky Utilities (KU) also apply to Old Dominion
Power (ODP). There are of course a few exceptions that may not be covered in this publication.
Throughout this book, the term Customer is used generically to address the party responsible for meeting
the service requirements found in this handbook. In reality, the Customers electrical contractor and/or
builder will utilize much of the information in this handbook. However, the Customer is ultimately responsible
for meeting the requirements outlined in this handbook.
The contents of this handbook are intended to guide the Customer through all of the necessary steps to
arrange for service. It also contains detailed drawings that cover many of the requirements that must be met
before KU/ODP can provide service. While the information in this book covers the requirements for most
common types of new services, it is not intended to cover every KU/ODP policy and/or standard for service
that may apply or provide all of the necessary information needed for complex or special installations.
KU/ODPs service representatives are available to assist Customers and contractors in complying with the
requirements of this handbook and to provide any additional support that may be needed to complete
complex or other non-standard projects.
KU/ODP reserves the right to modify the requirements found in this handbook or any other service
policy, procedure and/or standard at any time. It is the responsibility of the Customer or other
responsible party to ensure that any referenced document is the version currently approved for use
by KU/ODP.
KPSC
The administrative rules of the KPSC can be found in the document Kentucky Administrative Regulations
pertaining to the Kentucky Public Service Commission, Title 807, and Chapter 7 Utilities. This
document is available for public inspection at the Commission, on the KPSC Internet site (above) and also at
the KU Internet site (above) at http://www.lge-ku.com/home.asp then look for KU or ODP. This document
establishes general rules and regulations for all types of public utility service (water, gas, electric, telephone,
etc.) that falls under the jurisdiction of KPSC. Specific sections of this document apply to electric service.
KU rates and requirements for electric service are documented in Kentucky Utilities Company Rates,
Rules and Regulations for Furnishing Electric Service. This document can be found at each of the same
locations as the KPSC administrative regulations. This document sets out specific rates and requirements
for electric service provided by KU within the defined service territory.
KU provides electric service to all new residential Customers under a single rate plan. Non-residential
Customers will be placed in one of several different Customer plans depending on factors such as expected
peak demand and other characteristics of use. The rates and chargeable energy components for nonresidential service plans vary by the class of service, and in some cases by the service voltage provided and
even the time of use. Each class of service will also have different service restrictions and Customer
requirements. KU/ODPs service representatives will work closely with Customers to determine the
appropriate rate plan and all other necessary service parameters. This will ensure new Customers are
placed on the most cost effective rate plan available for their service size, voltage and characteristics of use.
Other Sources and Applicable Codes
National Electrical Safety Code (ANSI C-2) - The NESC covers work practices and requirements for
electric supply facilities under the control of public and private utilities and certain other similar systems
under the control of qualified persons, such as those associated with a large industrial complex. The NESC
covers the requirements for utility systems up to the Point Of Delivery. The NESC also covers street and
area lighting under the exclusive control of utilities or other qualified employees operating similar systems.
(IEEE Service Center, 445 Hoes Lane, P.O. Box 1331, Piscataway, New Jersey 08855-1331.)
National Electrical Code (ANSI-NFPA 70) - The NEC covers, in general, the design, alteration,
modification, construction, maintenance and testing of utilization (i.e. non-utility) wiring and equipment
including certain utilization wiring of a temporary nature. The NEC code generally covers all aspects of
utilization wiring beyond the Point Of Delivery. (National Fire Protection Association, Batterymarch Park,
Quincy, Massachusetts 02169.)
Kentucky Building Code This document establishes rules that are intended to establish a uniform building
code in the state of Kentucky (Department of Housing, Buildings and Construction, 1047 US HWY 127
South, Bay 1, Frankfort, KY 40601-7811, web site: http://www.state.ky.us/agencies/cppr/dhbc)
(800) 981-0600
For Commercial/Industrial Services Contact the Business Service Center
The submission of an application for service constitutes the Customers permission for KU/ODP to
conduct a credit history check.
At the time an application for service is made the customer will be given an
account and/or order number. This information should be retained for the
purpose of tracking the progress of the service request. The Customers
information will be given to the Operation Center in that area and if needed
a KU/ODP representative will contact the Customer to guide them through
all of the necessary steps to acquire service.
unanticipated equipment failures, tree contacts, high water conditions, public interference (such as vehicle
accidents, vandalism, etc.), failure of Customer equipment, etc. KU is also not liable for any loss of service
resulting from the need to de-energize lines and equipment without notice to allow employees and/or its
contractors to safely perform work or to respond to emergencies.
Customer Electrical Loading and Energy Use Restrictions
KU reserves the right to place restrictions on the type and manner of use of all Customers electrical
equipment. Examples of loads that may be restricted include loads too large for the service ratings, highly
fluctuating loads and other offending loads such as those with objectionable harmonic levels or characteristics
otherwise detrimental to KUs electrical system or its ability to provide acceptable service to other Customers.
When necessary, KU will require the Customer to remove or correct any unacceptable loads at their own
expense.
KU service connections, transformers, meters, and associated equipment used to provide service have
definite capacity limitations and can be damaged by changing service requirements, especially increased
loading requirements which can overload utility equipment. Therefore, the Customer must notify KU/ODP
prior to increasing loading requirements or making any other alterations to the service entrance equipment
that could affect utility equipment. Failure to properly notify the Company of such additional requirements
could result in damage to the Customers and/or the Companys facilities resulting in unexpected service
interruptions and delays in restoring service while repairs are made. Customers may also be subject to
charges by KU/ODP for corrective actions required to restore the utilitys system and for damage to other
Customers facilities.
The Customer will not be permitted to install wiring or connect any device that is detrimental to the KU
electric system or to the service of other Customers. KU will assume no responsibility for the Customer's
electrical wiring or apparatus or for the maintenance or removal of any portion thereof.
The Point Of Delivery for electrical energy supplied by KU shall be at a service point designated by KU. At
this point KU facilities are physically connected with the facilities of the Customer. The Point Of Delivery
varies by the characteristics of the service and whether the service is provided overhead or underground.
The Customer is responsible for furnishing, installing and maintaining all electrical apparatus and wiring to
connect with KU electric service facilities. All Customer wiring and equipment shall be installed and
maintained in conformity with applicable codes and the rules and regulations of the Inspection Authority
having jurisdiction.
Application for a temporary service and a future permanent service at the same location can be made at the
same time even though they are processed as two separate service applications.
Note:
Service MUST be applied for prior to applying for service inspection by either the owner or the
responsible builder/contractor.
2. Customer must work with the appropriate KU/ODP Representative to get an electric service and
meter location.
3. Customer must provide detailed load information and two copies of the site plan for all
commercial or industrial services.
Load data must be provided on KU Electrical Load Data Submittal Sheet. A copy of the electric data
submittal form can be found in section 7 of this handbook or electric forms can be requested from the
KU/ODP Representative. Completed forms should be returned to the KU/ODP Representative.
4. Customer must sign a service contract and pay any amounts due in customer contribution (if
required) before any work can be performed.
5. Customer must obtain a permit for electrical work and have all work inspected and approved.
The Kentucky Uniform Building Code requires the electrical inspection of all new buildings before service is
connected. After service has been requested, the electrical contractor or responsible party should contact
the appropriate Inspection Authority having jurisdiction in their area to arrange for the inspection and
approval of all electrical work.
When the Authorized Inspection Authority has approved electrical work, an approval sticker will be posted at
the job site. KU/ODP must be notified of the approval by the Authorized Inspection Authority before
scheduling work to energize the service. KU/ODP cannot energize the service if there is no approval sticker
in place. In Virginia some areas do not use an approval sticker. In these areas inspection is returned to
local office by the inspector.
6. Customer must have installed all KU/ODP required-Customer provided underground facilities
and notified KU/ODP when these facilities are ready for inspection..
KU/ODP requires commercial and industrial Customers to provide certain service facilities on private
property for use by KU/ODP. This includes items such as underground duct, equipment pads, manholes,
etc. that may be required to provide service. These facilities must be constructed to KU standards.
Following acceptance of the completed facilities by KU, control of these facilities is transferred to KU;
however, the Customer continues to own and be responsible for any necessary maintenance of these
facilities. These facilities must be completely installed, inspected and approved by KU before service work
can begin.
7. Customer must convey to KU/ODP all necessary Rights-of-Way.
The Customer must convey to KU/ODP all necessary Rights-of-Way on the Customers property required for
KU/ODP to place facilities and provide service. Any Rights-of-Way needed from other property owners will
be obtained by KU/ODP .
8. Customer must provide a centerline drawing for underground commercial/industrial services
which completely describes the location of Customer provided facilities and any easements
granted on the Customers property (Commercial & Industrial Customer Only).
KU/ODP Representatives will work with Customers to finalize the location of all KU/ODP electric facilities on
the Customers property. It is the Customers responsibility to provide detailed survey information, including
bearings and calls, for any underground facilities provided by the Customer for KU/ODP use as well as any
easements granted KU/ODP for the extension of electric facilities. Facility and easement information need
not be provided for any sections parallel to a property line provided a detailed property record plat has been
provided.
KU/ODP Steps
1. KU/ODP will design the utility service and provide the Customer any necessary documents related to the
service for use by the Customer, including design and construction drawings, forms, standards, etc.
2. KU/ODP will work to obtain all necessary permits from public entities for the installation of KU/ODP
facilities in public way. KU/ODP will also obtain all work permits required to perform work in public way
associated with providing service to the Customer. KU/ODP will obtain all necessary easements required
from other property owners, if applicable.
3. KU/ODP will install all required utility service facilities and energize the service once all of the above
Customer and contractor requirements have been met and KU/ODP has been notified that the Authorized
Inspection Authority has approved all work.
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Residential Customers
The Residential class of service is largely restricted to service for single-family units for lighting,
heating/cooling, cooking, refrigeration and other common purposes typical of domestic use. After an
application for service is made, a KU or ODP service representative will contact the Customer to determine
any required service parameters. The Customer needs to be able to provide the following information:
;
;
;
;
;
;
;
Residential services are not designed nor intended to provide service for unconventional or high demand
equipment such as on demand water heaters or other intermittent, high demand or frequently started
devices such as welders, large motors, etc. If any such equipment interferes with service to other
Customers or if KU/ODP cannot adequately serve these loads, the Customer will have to remove the
equipment at their expense. Additionally, the Customer is responsible for any costs associated with
upgrading KU/ODP facilities to serve any unconventional equipment or loads.
Residential services have maximum starting current restrictions that apply to motors, compressors and other
devices that have large starting currents, including HVAC units and associated equipment. Maximum
Locked Rotor (inrush) current is restricted to 125 amps at 240 volt and 50 amps at 120 volts. These
restrictions apply to all motors and other associated equipment arranged for simultaneous starting. Large
A/C units or other large motors, compressors, etc. may require supplemental starting equipment to ensure
inrush currents do not exceed these values. The Customer is responsible for any costs associated with
making corrections to the equipment, upgrading KU/ODP service or, if required, removing offending loads if
they exceed the above values.
General Information
KU/ODP supplies only alternating current service with a nominal frequency of 60 cycles per second at the
nominal voltages identified below.
While residential Customers will be provided with a single service offering, commercial and industrial
Customers can generally be served from one of several voltage offerings subject to the restrictions found in
the preceding section. Commercial and industrial Customers can choose to be served at secondary voltage
levels which are shown on next page below for KU/ODP Customers. Customers can also choose to be
served at primary voltage levels up to 34,500 volts if available. Transmission voltage service up to 161,000
volts is available to KU/ODP largest industrial Customers.
Each service voltage class (secondary, primary and transmission) offers different benefits and different sets
of Customer requirements and responsibilities. Service at secondary levels is a bit more costly than service
taken at either primary or transmission levels. However, it places the least burden on the Customer in terms
of equipment and maintenance costs. The Customer does not have to own or maintain high voltage lines or
equipment and is not responsible for the equipment necessary to transform high voltage to usable levels. If
a service is provided overhead, the service lines are brought right to the building at a usable voltage level.
When service is provided at primary or transmission levels, the Customers monthly utility costs are less, but
Customers equipment installation and maintenance costs increase. KU/ODP brings high voltage lines to the
Customers property, but terminates its high voltage lines at or near a property line. The Customer is
responsible for providing and maintaining all high and low voltage facilities beyond this point, including
transformation and protective equipment.
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Choosing a class of service voltage is an important decision for commercial and industrial Customers. It is
one of the first decisions to be made because it significantly affects the electrical system design for both the
Customer and KU/ODP. The Customer must carefully weigh the benefits and disadvantages, both
financially and operationally, of the different service offerings. KU/ODP Representatives are available to
help Customers understand the costs, benefits and limitations involved with each service voltage level.
Unless expressly authorized by KU/ODP, no temporary or permanent electrical work should start
until KU/ODP has determined the service size, voltage, wiring configuration and metering
requirements. KU/ODP is not responsible for any delays, reconstruction work or additional cost incurred by
Customers or their contractors/builders if work is started before all of the necessary service parameters have
been finalized.
Application
Residential and commercial services
Residential and commercial (where 120/208 volt 4-wire
is the nearest source)
Primary
2,400/4,160 volt 4-wire grounded wye
7,200/12,470 volt 4-wire grounded wye
13,200/22,900 volt 4-wire grounded wye
34,500/19,900 volt 4-wire grounded wye
Transmission
69,000 volt 4-wire grounded wye
138,000 volt 4-wire grounded wye
161,000 volt 4-wire grounded wye
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Overhead Services
When providing secondary service overhead, KU typically brings service conductors to
the home or facility being served although service can be terminated at a Customer
owned pole or structure. Service lines will be terminated at a location designated by
KU. In overhead installations, KU installs, owns and maintains these service
conductors all the way to the home or facility including the electrical connections made
at the service entrance. KU is responsible for connecting the Customers wiring to
KU/ODP service conductors at the service entrance. The provisions for attaching the
service lines to the building or structure are provided by the Customer to KU approved
standards. The Customer is responsible for all wiring and equipment beyond the
weather-head with the exception of the electric metering devices.
For industrial and commercial Customers taking overhead service at higher voltages,
special requirements apply. KU will terminate high voltage overhead lines at or near a
property line. Metering equipment will generally be located at or near this point. Beyond this point, the
Customer is responsible for the distribution and transformation of electrical energy. The Customer will
provide, own and maintain all electrical equipment, structures, lines and cable systems beyond this point.
For additional information, see the section above, Available Service Voltages and Configurations.
Underground Services
Underground Residential Service
When requested by a customer or developer to supply underground electric service, and where in the
judgment of KU, such service would be feasible, practicable and in accord with good operating practice, KU
will install such underground facilities provided the customer or developer complies with our Underground
Practices and Procedures.
In residential subdivisions KU will install, own and maintain primary and secondary distribution facilities if the
developer will provide a trench system and backfill to KU specifications. The trench will be inspected by KU.
Underground residential service from underground or overhead primary or secondary will be installed, owned
and maintained by KU for a fee per lot (amount subject to change, see design technician for current costs).
As an option the customer or owner may install the service conduit system, trench and backfill and connect
to KU conduit at the property line. Under this option there is a base fee per service, plus a cost per foot of
service cable will apply. KU will install, own, operate and maintain the service system in the applicant
installed conduit. In all cases the applicant or customer must install the meter base(s).
The point of delivery to an individual premise or load shall be at a point on such premise as designated by
KU. The customer or owner will provide, own, operate and maintain all electric facilities on the load side of
the point of delivery, with the exception of KU meter for which suitable provisions shall be made by the
customer in accordance with rules and regulations in KU rate book.
KU/ODP is not obligated to supply underground service when in the judgment of KU such service will be
impractical, infeasible or contrary to good operating practices.
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building being served in accordance with the latest revision of The National Electrical Safety Code (NESC )
and National Electrical Code (NEC ). Underground services must be located such that there are no conflicts
with other utilities or other structures, such as buildings or swimming pools.
The meter base should be located on the facility in an accessible location at the point closest to the service
entrance unless approval is given to locate the metering equipment elsewhere. For additional information on
metering requirements, see Part 2 Metering Requirements.
KU/ODP Representatives will work with the Customer to determine the appropriate location for the service
entrance and metering equipment.
General Metering Information
Because metering requirements can be somewhat confusing and complex depending on the service
size/type, a separate section of this handbook, titled Metering Requirements, contains specific information on
metering. Standards drawings detailing metering installations can be found in Part 7 of this handbook.
In general, every service installation will require one or more electric meters and the associated meter
base(s). The Customer is responsible for installing the meter bases. KU provides and installs the electric
meter(s) once the service is ready to be energized. Customer is responsible for providing and installing most
meter bases. For additional information on meter base requirements, see Part 2 Metering Requirements.
Regardless of who provides the meter base, the Customer installs, owns and maintains the base and other
required enclosures for the life of the system. However, the base is considered to be under the exclusive
control of the utility as long as the service exists. The meter base will be sealed by KU and access to the
meter base is prohibited without authorization.
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In addition to meter base requirements, Customers may be required to provide additional enclosures and
associated equipment for larger single-phase and three-phase services, which require instrument rated
metering. All enclosures required to house the special metering equipment and other associated equipment
such as connectors, by-pass switches, conduit, structural supports, pads, etc. will be provided, owned and
maintained by the Customer; they must nonetheless be approved for use by KU before installation. Like
meter bases, all metering enclosures, compartments and other associated equipment will be sealed by KU
and access to these areas without authorization is prohibited.
Easements And Clearance Requirements
General Requirements
KU obtains easements whenever it is necessary to locate electric supply lines or equipment on private
property. The location of these easements can affect the service location and the cost of the installation.
Easements give KU the right to access, construct, operate and maintain electric lines, cable systems and
associated equipment used to provide electric service Often KU electric facilities are located in common
easements with other utilities such as gas, telephone, cable TV, etc. The Customer shall provide, without cost
to KU, satisfactory right-of-way and suitable locations and/or housings for any of KU equipment necessary for
supplying service.
The Customer continues to own and maintain all property within the easement boundaries and the land is
available for many uses. However, easements place restrictions on land use. These restrictions help ensure
electric lines are protected, accessible, continue to meet code requirements and can be operated and
maintained safely. These restrictions, in part, prohibit the placement of any permanent structures within the
easement boundaries. Easements also restrict making any large changes in ground profile that could affect
clearance to overhead facilities or burial depth to underground facilities. Easements also restrict the use of
land for dumping or extensive storage purposes. These restrictions usually exclude small obstructions such as
fencing not exceeding 8 feet, dog houses, gardens, etc., provided they do not obstruct access to poles and
equipment. Generally it is permissible to place landscape plantings within easements. However, special
restrictions apply to trees planted in easements for overhead lines and for any landscaping placed around
ground-mounted electric enclosures. See the section titled Landscaping and Vegetation near Electrical Lines.
Easement restrictions specifically prohibit items such as buildings and building attachments or extensions
(decks, awnings, etc.), garages, large sheds, flag poles, fuel tanks, lighting structures, swimming pools (above
or in-ground), radio/TV antennas, piping systems, signs, large playground equipment, etc. Many times the
reason for the easement may not be apparent if electric facilitates have been placed underground. Customers
should always check property records before placing anything significant on their property. All easement
violations will be corrected at the owners expense. In many cases easement violations cannot be corrected
except by removal of the offending object.
All easements must be obtained before KU can begin installing electrical facilities on private property. The
easement and service route must also be cleared of construction materials, dumpsters, dirt piles, trees,
fences, etc. before KU begins any work. KU will trim existing trees along its overhead route to provide safe
clearances. However, trimming for service lines to the home or building is the responsibility of the Customer.
The service route is considered to be the area required for KU to run lines to the service entrance point for
overhead services and to the Customer-utility interface point for underground services.
Any work permits and/or easements required to perform work in public way or to install facilities on property
other than the Customer being served will be obtained by KU.
Electric easement widths vary according to the characteristics of the electric lines and the
nature of nearby obstructions. Typically, easements are taken to provide adequate
clearances to all existing obstructions and most common types of future obstructions such
as buildings, signs, etc. However, some special installations that may be added after the
lines are in place have clearance requirements that may exceed typical easement
dimensions. These include special types of obstructions like swimming pools, grain bins,
signs, etc. Some additional information on special easement and clearance restrictions
can be found below.
16
Code Violation
17
18
Equipment Vaults
Where practical all KU service facilities including transformers and switchgear are to be placed outside of
buildings and other structures. KU may waive this requirement if the only space available for placing the
equipment is inside a building or underground in an enclosure such as a fireproof vault. In these cases the
Customer must construct suitable housing for the equipment. The structure must have adequate size,
ventilation, oil retaining capacity and lighting to conform to building codes, safety codes and KU
specifications. It must also meet all applicable fire codes and be approved by the Authorized Inspection
Authority.
When vaults are required, Customers will secure vault specifications from KU and consult KU regarding the
location and construction of equipment vaults while building plans are being prepared.
Vaults or rooms shall be so located as to be easily accessible by direct entry from outside the building, for
the purpose of installation, maintenance and removal of KU equipment. Vaults must be of fireproof
construction, be adequately ventilated and drained, and shall comply in all respects with the NEC and any
other applicable codes.
Transformer vaults will contain only transformers, switchgear and other electrical service related equipment.
All Customer equipment, including secondary fuses, switches, circuit breakers and KU meters will not be
installed in transformer rooms and vaults. Customer access to these locations is prohibited unless approved
by KU. If access is necessary, a KU representative is required to be present at any time access is needed.
KU reserves the right to recover the cost of providing a representative for this purpose.
KU reserves the right to serve other Customers from its equipment located in vaults on the Customers
premises, provided this does not interfere with the Customers service.
19
20
21
22
Meter Information
This section contains specific information related to electric metering. Part seven of this
handbook contains the accompanying meter related drawings. Metering requirements vary by class of
service and the characteristics of the installation. KU service representatives will work with the Customer or
contractor to determine the necessary requirements.
General Requirements
23
Metering
Customers must provide multiple (ganged) metering assemblies which are typically used for multiple-tenant
facilities. Special requirements apply and Customers must work closely with the KU/ODP Representative
and the Electric Meter Department to ensure they meet all the requirements for service. All such equipment
must be pre-approved before purchase and installation. KU/ODP reserves the right to decline service if the
Customer installs unapproved equipment or enclosures.
Provide
Install
Own
Control
KU/ODP
KU/ODP
KU/ODP
KU/ODP
KU/ODP
KU/ODP
KU/ODP
KU/ODP
Customer
Customer
Customer
KU/ODP
KU/ODP
Customer
Customer
KU/ODP
*Customer
Customer
Customer
KU/ODP
KU/ODP
Customer
Customer
KU/ODP
*Customer
Customer
Customer
KU/ODP
KU/ODP
Customer
Customer
KU/ODP
KU/ODP
Customer
KU/ODP
KU/ODP
Customer
Customer
Customer
KU/ODP
Customer
Customer
Customer
KU/ODP
Customer
Customer
Customer
KU/ODP
Customer
Customer
Customer
KU/ODP
Customer
Customer
Customer
KU/ODP
Customer
Customer
Customer
KU/ODP
24
Location of Metering
The Customer is responsible for providing and maintaining an approved location for the installation of
metering equipment, including the metering systems, current transformers, potential transformers, test
devices, and related enclosures.
All meter bases should be installed outdoors in easily accessible, secure and non-hazardous locations
approved by KU/ODP. The locations must be free from obstructions, corrosive hazards, extreme
temperatures, and excessive vibration. When it is impossible or impractical to install the meter base outside,
KU/ODP may approve the installation of the electric meter base in a secure, non-hazardous, accessible
indoor location. Approval to install metering equipment indoors must be granted prior to placement of the
equipment. It will be the Customers responsibility to relocate any metering equipment not installed in an
approved location.
25
Installation Requirements
No disconnect means will be allowed in front of the electric metering point except by special
authorization of KU/ODP or when required by the NEC and approved by KU/ODP . No junction
boxes, splice boxes, panels or other compartments, etc. will be allowed ahead of the electric
metering point without approval of KU/ODP unless they are intended for the purpose of housing
metering equipment and under the exclusive control of KU/ODP.
All meter bases, enclosures and compartments must be installed level, plumb, and securely fastened to
walls or other supports. Customers are responsible for installing equipment in compliance with all relevant
KU/ODP standards and in a manner that protects the metering devices from loss, damage and theft both
during construction and while in service.
All meters are to be mounted such that the meter centerline height is 5-6 above finished grade. If this
height cannot be obtained while meeting other location requirements, the meter can be located between 40 and 6-0 above finished grade. When special circumstances do not permit this mounting height, KU/ODP
may allow a deviation in the mounting height requirement, but in no case will meters be mounted above 6-0
above finished grade or less than 4-0 above finished grade.
The working space directly in front of all metering equipment must
be at least 48 wide (2-0 on either side of the meter) and 36 deep
measured from the front of the meter. Contact the KU/ODP
Representative assigned to your project should the need for
deviation from these rules exist.
Meter Removal
KU/ODP sometimes receives requests to remove self-contained meters so Customers can repair or modify
internal wiring. Only qualified personnel, authorized by KU/ODP, are permitted to cut seals and remove
meters. The Company may grant exceptions to qualified electricians for emergency work. Contact the
KU/ODP Customer Care center 800-981-0600. KU/ODP must be promptly notified when repairs or
modifications have been completed.
Extreme caution must be used when meters are removed or installed.
Never remove meters until the source has been disconnected or all loads beyond the meter have
been disconnected or otherwise shut off. Manufacturers do not design meters to interrupt load and
damage to the metering equipment and/or personal injury could result if the meter is removed under
load.
26
Never remove an instrument rated meter under any circumstance. Removal of an instrument rated
meter will not provide a break in the incoming service and extremely high voltages will develop in the
meter base and associated instrument transformer wiring if the meter is improperly removed
Removing the meter also does not guarantee the service cant remain energized by another energy source
such as a standby generator, Uninterruptible Power Supply (UPS) system, etc. Any party that removes a
meter, whether authorized or not, accepts all liability for damage or alteration to equipment, injury to persons
or property, and loss of revenue from the time the seal is removed until 72 hours after KU/ODP has been
notified that the meter is ready to be resealed.
All meter sockets must be covered and sealed with a transparent cover at any time a meter is not installed
for any reason. Unused meter bases must also be sealed with a transparent cover.
SERVICE AMPACITY
APPLICABLE
STANDARD DRAWING
0 to 200 Amps
1 Conductors Max./
81-20-101
2 Conductors Max./
See Area
Design Tech/Engineer
2 Conductors Max./
81-10-02-B1
0 to 200 Amps
1 Conductors Max./
81-20-101
120/240V 1 3-Wire
Or
120/208 (Network) 3-Wire2
120/240V 3 4-Wire
See Area
Design Tech./Engineer
120/208V 3 4-Wire
Grounded WYE
0 to 200 Amps
1 Conductors Max./
81-20-10
200-800 Amps
81-10-07A
5 Conductors Max./
81-10-12
Or
800 to 2000 Amps
See Area
Design Tech./Engineer
See Area
Design Tech./Engineer
277/480V 3 4-Wire
Grounded WYE
1
2
Refer to Standard Drawing 81-10-40 for additional requirements on self contained meter bases.
Requires special meter base with 5th lug.
27
The following table also details other meter installation drawings of interest.
120/240 Volt
1-Phase
3 Wire
Service
Ampacity
Meter
Socket
0
To
200 Amps
81-20-101
See Area
Design
Tech.
Overhead
Underground
All
All
A-2-4.0
81-20-02
See Area
Design Tech.
81-10-02 B1
And
81-20-101
Refer to Standard Drawing 81-10-40 A for additional requirements on self contained meter bases.
28
Manufacturers
Catalog Numbers
Milbank
Durham
Landis & Gyr
Murray
Cutler Hammer
U7487-XL-TG-KK
UHT-RS101B
UAT111-0P
RJ193AX
UHTRS101BCH
Milbank
Durham
Landis & Gyr
Murray
Cutler Hammer
Cutler Hammer
U7040-XL-TG-KK
UHT-RS212B
UAT417-0P
RB198AR
UTH4213TCH
UHTRS213BCH
Milbank
Durham
Landis & Gyr
Landis & Gyr
Murray
Cutler Hammer
Milbank
Durham
Landis & Gyr
Murray
Murray
Cutler Hammer
U1079-R, U2448-X
UT-H4300T
47704-01
47604-02
RK173AH
UTH4336TCH
U1129-O-K3L-K2L, U1797-O-K3L-K2L,
U2448-X
UT-H4330T
44704-01
RK178A
JAO16B1400RLTM
UTH4336TCH
Lever Bypass
29
Manufacturers
Catalog Numbers
Cutler Hammer
Cutler Hammer
* Landis & Gyr
* Landis & Gyr
Milbank
Milbank
UTH5213BNDCH
UTH7213UCH
40407-0250
9804-8592
U9581
U9701-RRL
Cutler Hammer
Cutler Hammer
Landis & Gyr
Landis & Gyr
Milbank
Milbank
UTH5330UCH
UTH7330UCH
47705-02
48707-02
U4419
U2120X or U2594X
320 Amp - OH / UG
5 Terminal (240V Delta & 3Ph Network Only)
7 Terminal (120/208 Wye Only)
5 Terminal (240V Delta & 3Ph Network Only)
7 Terminal (120/208 Wye Only)
5 Terminal (240V Delta & 3Ph Network Only)
7 Terminal (120/208 Wye Only)
30
Manufacturers
Catalog Numbers
2 Gang - Single-phase
Single-phase
Cutler Hammer
Murray
Polyphase - 7T
Murray
UHT2R112BCH
DC341W, DC441W, DC541W
DL141W7, DL241W7, DL341W7,
DL441W7
Cutler Hammer
General
Electric
Milbank
Murray
Polyphase - 7T
Murray
UHT2R2332TCH
TMPR312422R
U1252-RRL-KK-K1
DC342W, DC442W
DL142W7, DL242W7, DL342W7,
DL442W7
Non Approved
Centers must be UL listed, have bypass capability, and be of the ringless design.
Please call for requirements on any services not listed above:
KU/ODP - Customer Care Center
(800) 981-0600
31
32
33
34
35
Clearance Requirements
The National Electrical Safety Code (NESC) and the
National Electrical Code (NEC) have established
minimum overhead clearance requirements to ensure
safe heights for different types of electrical conductors
over various terrains depending upon the type of usage
expected. The diagram illustrates ground clearance
requirements for a typical overhead temporary electric
service. For additional information refer to the latest NESC and/or NEC codes. Your electrical inspector
and KU/ODP Service Representative will be able to assist you design a temporary service support so
adequate clearance is provided. Although KU/ODP provides the overhead service conductors, the Customer
must provide adequate clearance at the temporary structure to ensure all applicable clearance requirements
can be met.
Responsibilities
Customer Owned and Installed Equipment
(All Equipment Installed To KU/ODP Specifications)
Notes
Timber sizes for service supports found in the standard
drawing 12 10 02 found in part 7 are recommended as the
minimum for the strength required. KU/ODP assumes no
responsibility for failure of support caused by the attachment
of its service.
NEC 305-6 requires approved ground-fault circuit protectors
on all 15 and 20 amp single-phase receptacle outlets.
Service neutral and meter base must be permanently
grounded in accordance with NEC guidelines.
KU/ODP Owned and Installed Equipment
Note: Instrument transformers, if required, will be provided by the utility, but installed by the Customer. The
utility will provide and install any associated meter wiring.
Construction Standards
All overhead temporary services are to be constructed in accordance with KU/ODP Standard Drawings 12
10 02 found in Part 7. Another drawing that may be useful in the construction of underground temporary
services is the meter base detail 81-20-10 shown in Part 7.
36
in grade. For additional information on burial requirements, refer to the latest edition of the NESC , NEC , or
contact the Authorized Inspection Authority.
Responsibilities
Customer Owned and Installed Equipment
(All Equipment Installed To KU/ODP Specifications)
Notes
NEC 305-6 requires approved ground-fault circuit
protectors on all 15 and 20 amp single-phase
receptacle outlets
Service neutral and meter base
must be permanently grounded in
accordance with NEC guidelines.
KU/ODP Owned and Installed
Equipment
Transformer Or Pedestal
Utility Secondary Lines To
Customers Point Of Ownership
(For Service from Pedestal)
Connection To Customer Wiring
Electric Meter And Metering
Transformers, If Required
Construction Standards
All Underground temporary services
are to be constructed in accordance
with KU/ODP Standard Drawings
52 10 02 found in Part 7.
37
Secondary Side
Primary Side
Please be aware of KU/ODP's requirements for a clear work zone area around utility equipment for
temporary service structures. Temporary service structures should be located out of the reserved
work zone area.
Please be aware of
KU/ODP requirements
for a clear work zone
area around utility
equipment. Service
structures should be
located out of the
reserved work zone
area.
38
Available Service
Two types of residential electrical services are available - Overhead and Underground. Underground
service is generally available to everyone. Specific exceptions include areas subject to high water or
flooding and in areas where excavation may be limited due to soil/rock conditions. If the new home is in an
established underground residential subdivision, service must be provided underground. Overhead service
is available if nearby utility facilities are overhead, except in areas specifically prohibited by local ordinance.
The Customer is responsible for any additional costs associated with underground service when overhead
facilities are available even when ordinance or other restrictions limit providing service overhead. It is the
Customers responsibility to be aware of any applicable local codes and ordinances. Code requirements
specify a minimum 100A service entrance for permanent residential services. All services must be wired for
three-wire service. Two-wire service is no longer provided.
The only service voltage available for permanent Single Family and Mobile Home residental applications is
120/240 volt single-phase, three-wire sevice up to 800A unless otherwise approved by KU/ODP. All singlephase services must be wired for three-wire service regardless of need. Two-wire service is no longer
provided. For the largest homes that require services larger than 800 amp, the only option will usually be to
provide 120/208 three-phase four-wire service. Three phase service cannot be established on the Residenal
Rate plan for Single Family homes and must be served under the General Service rate. Customers should
be aware that the cost to extend three phase service to serve residential loads can be costly unless threephase lines are nearby. Most Multi-Family facilities will also be served by 120/240 volt single-phase, threewire sevice up to 800A except for high rise Multi-Family Developments. These installations will generally be
served with three-phase service.
40
Clearance Requirements
The National Electrical Safety Code (NESC) and
the National Electrical Code (NEC) have
established minimum overhead clearance
requirements to insure safe heights for different
types of electrical conductors over various terrains
depending upon the type of usage expected. The
diagram illustrates ground clearance requirements
for a typical overhead permanent electric service.
For additional information refer to the latest NESC
and/or NEC codes. Your electrical inspector and
KU/ODP Service Representative will be able to assist you in a permanent service so adequate clearance is
provided. Although KU/ODP provides the overhead service conductors, the Customer must provide
adequate clearance at the facility to ensure all applicable clearance requirements can be met.
Responsibilities
The figure below identifies Utility and Customer
responsibilities for a typical overhead electrical service.
Customer Owned and Installed Equipment
(All Equipment Installed To KU/ODP Specifications)
Construction Standards
All residential overhead services are to be constructed
accordance with Standard Drawing 81 20 02 found in part 7
of this book.
41
Responsibilities
The illustration below shows a typical underground electrical service and identifies the shared responsibilities
between KU/ODP and the Customer.
Customer Owned and Installed
(All Equipment Installed To KU/ODP Specifications)
Construction Standards
All permanent residential underground services in
underground fed subdivisions are to be installed in
accordance with KU/ODP Standard Drawing A-2-4.0
found in Part 7 of this book.
CUSTOMER
42
Type of Service
Two types of residential electrical service are available, Overhead and Underground. Underground service
is generally available to everyone. Specific exceptions include areas subject to high water or flooding and in
areas where excavation may be limited due to soil/rock conditions. Overhead service is available if nearby
utility facilities are overhead, except in areas specifically prohibited by local ordinance. The customer is
responsible for any additional costs associated with underground service when overhead facilities are
available even when ordinance or other restrictions limit providing service overhead. It is the customers
responsibility to be aware of any applicable local codes and ordinances.
43
General Requirements
Service equipment for mobile homes shall be
located adjacent to the mobile home and not
mounted in or on the mobile home. This
equipment shall be accessible and shall be
located in sight from and not more than 30 feet
from the exterior wall of the mobile home it
serves.
KU/ODP will provide all utility facilities up to the
Point Of Delivery. The Point Of Delivery for
overhead services is defined as the Customer
owned (KU/ODP approved) terminating
structure and service entrance. The
Customers facilities must be installed in
accordance with all national, state, local, utility codes, standards and/or regulations.
Service Disconnect
The Customer must provide a weatherproof disconnect
switch, over-current protection, grounding provisions and
all other associated facilities necessary to provide service
to the requirements of the NEC. The disconnect must
be located on the load side of the meter.
Overhead Services
The Customer must provide a suitable pole or structure of
adequate size and strength for terminating the overhead
electric service drop provided by the utility. The
Customer must also provide the service weather-head
and all other associated service entrance equipment.
Customer provided poles must have sufficient height to
provide all required clearance for the Utilitys service drop
and any telephone, cable TV or other attachments. Poles
must not be less than 5 inches in diameter at the top if
round and shall be set at depths appropriate for the
poles length.
Wooden poles must be pressure or thermally treated with
a Utility approved preservative. Metering and service
equipment can be located on the Customers termination
structure. All termination structures must be approved for
use by the utility.
Clearance Requirements
The National Electrical Safety Code (NESC) and the
National Electrical Code (NEC) have established minimum overhead clearance requirements to insure safe
heights for different types of electrical conductors over various terrains depending upon the type of usage
expected. The diagram illustrates ground clearance requirements for a typical overhead permanent electric
service. For additional information refer to the latest NESC and/or NEC codes. Your electrical inspector
and KU/ODP Service Representative will be able to assist you in a permanent service so adequate
clearance is provided. Although KU/ODP provides the overhead service conductors, the Customer must
provide adequate clearance at the structure to ensure all applicable clearance requirements can be met.
44
Responsibilities
Customer Owned and Installed Equipment
(All Equipment Installed To KU/ODP Specifications)
Notes
Service neutral and meter base must be permanently grounded in accordance with NEC guidelines.
KU/ODP Owned and Installed Equipment
Underground Services
The Customer must provide a suitable post, pedestal or other structure for mounting metering and
associated service equipment. The minimum acceptable post size is six-inches by six-inches by 8 feet long.
This size may need to be increased to provide adequate surface
area to mount the meter base, disconnect switch and other service
equipment. Wooden poles and posts must be pressure or thermally
treated with a Utility approved preservative. All service structures
must be approved for use by the utility.
Post installation must include all necessary bracing to prevent the
meter base from swaying. Since stability is a concern with
prefabricated pedestals, they are not recommended. You must
obtain KU/ODP approval before installing such pedestals. Metal
posts, frames or pedestals can be used as an option to wooden
poles or posts if approved by KU/ODP. These options do not
diminish or eliminate the requirements for height above the grade
for meter mounting. See drawing# 81 20 07 for post depth, height
and other details in Part 7 of this handbook.
Responsibilities
Customer Owned and Installed Equipment
(All Equipment Installed To KU/ODP Specifications)
Service Support (Post Or Pedestal) And Bracing
Meter Base And Disconnect
Service Entrance Conductors
Ground Conductors, Rods, Etc.
Notes
Service neutral and meter base must be permanently
grounded in accordance with NEC guidelines.
KU/ODP Owned and Installed Equipment
45
Multi-Family Structures
Multi-Family dwellings served under the residential rate must
meet all of the provisions found in the section on permanent
residential services. Some additional provisions apply as
described below. The following definitions and classifications
apply to multi-family services and developments.
Special Definitions/Classifications
"Dwelling unit" means a structure that is used as a home, residence or sleeping place by one or more
persons maintaining a common household.
Multi-dwelling unit" means a structure with more than one dwelling unit and not more than three
stories above grade.
"High-rise building" means any multi-family building with four or more stories.
Low Density Multi-Family installations mean a single multi-family building of any size, or two more
multi-family buildings containing less than five (5) dwellings per building.
High Density Multi-Family installations mean developments with two (2) or more building containing
not less than five (5) family units per building.
Line Extensions
The cost to provide service to multi-family buildings is dependent on many factors including how far KU/ODP
must extend lines to serve the building(s) and whether service is to be provided overhead or underground.
Other factors include the number of buildings involved, the number of dwelling units per building, the number
of floors in each building and the average density of dwelling units per acre. Single multi-family buildings
and others meeting the definition of Low Density facilities will be treated in the same manner as service
provided to individual residences. Two or more buildings meeting the definition of High Density multi-family
facilities may be subject to a reduction in the cost to provide service provided there is an average density of
8 dwellings per acre. Service to high-rise buildings is complex and unique and must be addressed
individually. A KU/ODP Service Representative will work closely with Customers to identify all costs to
provide service to multi-family installations.
Special Metering Requirements
In all cases of multi-family structures, individual meters shall be clearly and permanently identified to
determine which dwelling unit service is supplied. Details on meter labeling requirements for multi-family
structures can be found in section Meter Information. Should changes occur in wiring, location, etc.,
KU/ODP must be contacted and the change noted on the meter installation.
Individual meters are required for each newly constructed dwelling unit in a multi-dwelling building except as
excluded below:
Exclusions:
1. Transient multi-dwelling units such as hotels, motels, campgrounds, hospitals, nursing homes,
convalescent homes, college dormitories, fraternities, sororities, boat docks and mobile homes without a
permanent foundation and not connected to sanitation facilities.
2. Electricity used in central HVAC systems.
3. Electricity used in high-rise buildings.
4. Applicants who desire master metering on buildings for which master metering is prohibited may make a
formal complaint to the commission. Applicant must prove the cost of individual metering is greater than
the long run benefits of individual metering to the consumers of the electricity at the building.
Residential rates are based on service to individual family dwelling units and are not applicable to
multi-family dwellings combined on a single meter. For each family unit to be billed under the applicable
residential rate, each dwelling unit must have the electrical service metered separately. Any other metering
configuration will result in billing under an appropriate commercial rate.
46
47
48
Application
Lighting and small commercial services
where 120/208 volt 4 wire is nearest source
Application
Secondary
120/208 volt 4-wire grounded wye
277/480 volt 4-wire grounded wye
120/240 volt 4-wire grounded delta
240/480 volt 4 wire grounded delta
Primary
2,400/4,160 volt 4-wire grounded wye
7,200/12,470 volt 4-wire grounded wye
13,200/22,900 volt 4-wire grounded wye
19,900/34,500 volt 4-wire grounded wye
Transmission
69,000 volt 4-wire grounded wye
138,000 volt 4-wire grounded wye
161,000 volt 4-wire grounded wye
Installation Costs
The installation costs for commercial or industrial, overhead or underground electric service depends upon
the size, type and location of KU/ODP existing facilities and the type of service desired. These costs will
vary according to KU/ODP ability to access existing utility facilities and/or the need to construct new facilities.
Contact your KU/ODP Representative and/or Account Representative to discuss the specifics of your
project.
49
Number/Type Of Services
KU/ODP will provide each Customer a single service voltage/configuration and will provide this service to a
single location at the facility. Customers provided with three-phase service are expected to provide any
necessary voltage transformation needed for lighting and outlet loads.
Grounding
The NEC requires one or more ground rods at the service entrance. Some Authorized Inspection
Authorities require a minimum of two so Customers should consult with the inspection authority before
construction begins. Ground rods need to meet the minimum requirements of the NEC and should be 8
feet or longer. If multiple rods are installed, rods should be installed at least 6 feet apart. The grounding
electrode shall be continuous from the service entrance main disconnect to one or both of the driven ground
rod(s). All of the grounding bonds shall meet or exceed NEC requirements.
Overhead Services (600 Volts or Less)
Overhead Clearance
The National Electrical Safety Code (NESC) and the National Electric Code (NEC) have established
minimum overhead clearance requirements for electrical conductors that span over various types of terrain.
The Customer must insure the attachment point on the structure, at the service mast or service pole, as
applies, will allow KU/ODP to install the utility service lines and maintain the required clearances. For
additional information on clearance requirements, refer to the latest edition of the NESC, NEC, or the
Authorized Inspection Authority having jurisdiction.
Overhead Installation
Customer Owned and Installed Equipment
(All Equipment Installed To KU/ODP Specifications)
Note: Instrument transformers, if required, will be provided by the utility, but installed by the
Customer. The utility will provide and install any associated meter wiring.
The Point of Delivery for overhead service is considered to be the transition from KU/ODP utility service lines
to the Customers service entrance conductors. The transition typically occurs at the Customers
weatherhead located on the service mast or service pole. If metering must be installed at a location remote
from the point of demarcation, special arrangements must first be made with KU/ODP.
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Underground Installation
Customer Owned and Installed Equipment
(All Equipment Installed To KU/ODP Specifications)
51
Location of Equipment
The Customer must provide a location suitable for the installation of the
pad-mount transformer, switchgear and other associated service supply
equipment. The area must be free from obstructions, provide adequate
access, work and safety clearances.
Utility equipment will not be located inside of buildings or in below ground
vaults unless no other options to provide service exists. For more complete
information on equipment location requirements see part 1 of this handbook
titled Requirements for Electric Service Equipment
Special Requirements for Transformers and Other Oil Filled Equipment Located
Outside but Near Buildings
KU/ODP restricts the location of transformers and other oil filled equipment near buildings based on previous
Kentucky State Fire Marshall requirements to the following:
Placement of transformers and other oil filled equipment closer to buildings will require a fire containment
enclosure and/or modifications to the building to reduce the potential fire risk. Fire containment requirements
for oil filled equipment can be found on Drawing 42 06 20 in Part 7 of this handbook.
Note: The fire containment requirements do not meet the environmental requirements for oil containment
when required.
In addition to oil filled equipment limits near buildings, other requirements for equipment location will apply
for special installations near pools, fire hydrants, sprinkler valves, standpipes, fire escapes and building
access openings, and any facilities used to dispense or store hazardous liquids or gases.
Contact your KU/ODP Representative for requirements and possible exceptions to these rules and/or
contact the State Fire Marshall, Department of Housing, Buildings and Construction, Division of Fire
Prevention at (502) 564-3626.
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53
54
Conversion Costs
When an existing overhead service of adequate capacity and maximum 200A size is replaced with
underground at Applicants request, a removal cost, in addition to the appropriate service installation fee
should be paid when the replacement Service is requested.
If a Customer is adding load to a home or business, and the additional load will require KU/ODP to change
out the existing overhead service, the Customer will have the option of either staying with an overhead
service or going to an underground service with applicable Customer contribution required.
Customer Owned and Installed
(All Equipment Installed To KU/ODP
Specifications)
Responsibilities
The figure to the right identifies
the shared responsibilities
between KU/ODP and the
Customer for a typical
conversion of Overhead to
underground electrical service.
Construction Standards
All residential overhead to
underground service conversions
will be constructed to KU/ODP
Standards.
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Rewire Procedure
If an existing electrical service is to be rewired, certain standards and specifications must be followed. If you
are going to have the work done, it is recommended that a qualified licensed electrical contractor be used.
All work must be completed to the requirements of the NEC the NESC and the Authorized Inspection
Authority.
Regardless of whether a licensed electrician or the owner performs the work, an electrical permit
must be obtained and electrical work must pass all required electrical inspections before KU/ODP
can make any changes to, or reconnect the service.
Before proceeding with any rewiring work, the responsible party must contact the appropriate
KU/ODP Representative for a meter location. To determine the appropriate Representative, contact
the Customer Care Call Center at (800)-981-0600 for residential rewiring work or for
commercial/industrial work.
The NEC requires all new and upgrade residential services to be rated a minimum of 100 amp.
KU/ODP requires all residential services to be 120/240 volt single-phase 3-wire.
Besides issuing a meter location, the KU/ODP Representative will also advise the Customer about
such things as the acceptable meter base height, location, etc. if necessary. Construction standard
drawings are provided in this handbook detailing the most common service requirements.
Clearance of 3 feet is required in front of any meter and the Customer must own that area. The area
2 feet on either side of the meter location must be clear of any obstructions. A minimum of 3 feet of
clearance is required between the electric meter base and a gas meter (outside to outside).
An overhead electric service line cannot pass in front of a window unless there is a minimum
horizontal clearance of 36. Electric service cannot pass over a chimney or roof vent.
An overhead service pole will typically be required for 200 amp services (and below) if the service
length exceeds 100 feet and when adequate clearance cannot be obtained for services less than
100. The maximum length with a service pole will be 200 feet provided voltage drop and flicker
requirements can be met.
A service pole will also typically be required for overhead service runs over 70 feet for services
larger than 200 amps. The maximum distance with a service pole for this size service will not
exceed 140 feet provided voltage drop and flicker requirements can be met.
After the service has been inspected, the Inspecting Authority will
notify KU/ODP and, in most cases, the service will be connected
WITHIN 5 working days.
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57
58
Example #1:
Example #2:
59
Portable generators are designed to supply power directly to one or more appliances. Never rig a
portable generator into your home wiring system. The voltage can back feed into the Utility system and
be transformed to very high levels. This can overload and damage the generator. It can also seriously
injure Utility personnel working to restore service on what is expected to be a de-energized line. When
power is restored, an electrical fault can occur because the generators voltage will not be in phase with
the utility system voltage. This can seriously damage the premises electrical system and/or the
generator.
Only operate portable generators in ventilated areas. Portable generators produce carbon-monoxide
fumes that are potentially lethal in enclosed areas.
Use heavy-duty extension cords with your appliances and your portable generator, and dont overload
an extension cord with too many appliances.
Portable generators arent intended to run your entire home electrical system. Know which equipment
youll need in an emergency situation, and only plug those items into your generator. Do not overload
the generator and make sure the protective devices on the generator work correctly.
Permanent generators, as stated above, require a device called a transfer switch that prevents them from
being connected to our electric system. If you plan to permanently install your portable generator, be sure to
have your electrical contractor install the proper transfer switch.
For additional information, use the link below to the Consumer Product Safety Commission web page on
generator safety: http://www.cpsc.gov/cpscpub/pubs/portgend.html
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Always Call 811 before Digging near Underground Utilities in Lexington Area!
For areas outside of Lexington and the surrounding counties you must also call the
KU/ODP Customer Care Call Center at (800)981-0600 for location of electrical
facilities.
In Virginia call 811 Miss Utility and allow 48 hours before beginning
excavation.
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Drawing #
Load Data Sheet
02 10 20
12 10 02
52 10 02
81 20 02
A-2-4.0
42 06 20
12 02 10
12 02 12
81 20 07
04 10 04
A-2-7.0
A-2-5.0
40 02 04
81 10 02
81 10 07
81 10 12
81 10 33
81 10 32
81 10 38
81 10 39
A-2-4.2
81 20 05
81 10 40
81 20 10
81 10 00
Description of Drawings
Electrical Load Data Submittal Sheet..
Clearances of Wires, Conductors and Cables Passing Over or Near
Swimming Pools.
Requirements for 100A Overhead 120/240V Temporary Service..
Requirements for Underground 120/240V Temporary Service...
Typical 200-400A Meter Base for 1 Overhead Service...
Residential Underground 120/240V Single Phase Service..
Transformer Fire Protection for 3 Padmount Transformers
75/2500KVA..
Recommended Mobile Home Individual Underground Service.....
Farm Multi-Service and Individual Mobile Home Meter Installations...
Typical Post Mounted Installation for 1 Service for Mobile Home.
Pole, Guy and Pad Protection..
Single Phase Pad Mount Transformer Concrete Pad...
Three Phase Pad General Recommendations..
Concrete Encased Duct Layouts and Trench Dimensions...
Minimum C.T. Enclosure Size Using 1 or 2 Cables Per Phase 120/240V
1 3W >400A-1200A
Minimum C.T. Enclosure for 1 or 2 Cables per Phase 120/208V 3 4W
277/480V 3 4W - <800Amp (LG&E/KU)
Minimum C.T. Enclosure for up to 5 Cables Per Phase 120/208V 3 4W
277/480V 3 4W - >800Amp (1900A Max.)..
C/T Compartment W/WO P/Ts..
Space Requirements for Metering Window Type Current Transformers
Instrument Meter Pedestal...
Secondary Meter Pedestal
Multi-Family Dwelling Individual Metering Underground.
Multi-Family Dwelling Individual Metering Overhead..
Clearance and Feeds for Multiple Metering
Typical Meter Base for 1-3 Overhead/Underground Service 200A
Max.
Minimum Specifications for C.T. Enclosure Cabinet..
65
Page
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69
71
73
75
77
79
83
85
87
89
91
93
95
97
99
101
103
105
107
109
111
113
115
117
119
66
Facility Name:
Address:
Directions:
Date:
City/State/Zip:
Electric And Gas Service Data
New Construction
Overhead
Existing
A Conduit #/Dia.:
No
(Need Date:
Conductor #Sets/Size:
(AWG/kcm)
Metering Comments:
Sq-Ft Of Floor Area On
Floors Of Which
Gas
Electric
Yes
( _ Sq-Ft Finished,
Facility Has
Sq-Ft. Unfinished )
Unit(s)
Inches
Requested Service
Voltage/Type
Available Service
Connected
KU
LG&E
Loads
OH UG OH UG Space Heating
120/240V 1-Phase, 3-wire Yes Yes Yes Yes A/C/Heat Pump
208/120V 3-Phase, 4-wire Yes Yes Yes Yes Air Handlers
240V
3-Phase, 3-wire Yes No No No Lighting
240/120V 3-Phase, 4-wire No No Yes Yes Water Heating
480/277V 3-Phase, 4-wire No Yes Yes Yes Cooking
480V
3-Phase, 3-wire Yes No No No Refrigeration
Other
Welding**
Based on your experience and load data, estimate
MIsc./Recept.
what you believe the true total peak kW Demand will
Total
kW.
be
* LG&E Gas Only
HP:
Voltage:
Phase:
LRA:
FLA:
No
(List Type If Yes)
Reduced Voltage Starting: Yes
1-Phase
kW
3-Phase
kW
Gas*
btuh
Outdoor Lighting
Office Use
Only
Owner/Develop
Phone:
Name:
Address:
Address:
Gas Contractor (If LG&E Provided) Phone:
Name:
Address:
Address:
Comments/Additional Information
Submitted By:
Dated:
67
)
%)
%)
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69
A. Clearance in any
direction from the water
level, edge of pool, base
of diving platform or
anchored raft
B. Clearance in any
direction to the diving
platform, tower, water
slide, or other fixed, poolrelated structures
V. Vertical clearances
over adjacent land
Insulated communication
conductors and cables;
messengers; surge protection
wires; grounded guys;
ungrounded guys exposed to
0 to 300 V (3); neutral
conductors meeting Rule
230E1; supply cables
meeting Rule 230C1
(ft)
22.0
22.5
23.0
24.5
25.0
14.0
14.5
15.0
16.5
17.0
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
NUMBER OF CONDUCTORS
SINGLE (MAX. OF 1 PER LEG)
PARALLEL (MAX. OF 2 PER LEG)
EQUIPMENT
C.T. ENCLOSURE, GROUNDING LUGS,
PLYWOOD, POWER BLOCKS & CONDUIT
C.T.S. METER ENCLOSURES
METER & SECONDARY WIRING
FURNISHED BY
COPPER
INSTALLED BY
ALUMINUM
CONTRACTOR
CONTRACTOR
UTILITY
UTILITY
CONTRACTOR
UTILITY
99
100
NUMBER OF CONDUCTORS
PARALLEL MAX. OF 5 PER PHASE
EQUIPMENT
C.T. ENCLOSURE, GROUNDING LUGS,
PLYWOOD, POWER BLOCKS & CONDUIT
C.T.S. TEST BOXES
METER & SECONDARY WIRING
INSTALLED BY
ALUMINUM
CONTRACTOR
CONTRACTOR
UTILITY
UTILITY
CONTRACTOR
UTILITY
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120