3RD Q Tle10 - Ia - Eim - q3 - Mod1 - Installingwirewaysandcabletrays - v4

10
Technology and
Livelihood Education
Industrial Arts
Electrical Installation and
Maintenance
Quarter 3 - Mo dule 1
Installing Wire Ways and Cable Trays
Department of Education ● Republic of the Philippines
Technology and Livelihood Education Grade 10
Industrial Arts - Electrical Installation and Maintenance
Alternative Delivery Mode
Quarter 3 - Module 1: Installing Wire Ways and Cable Trays
First Edition, 2020
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Preparing Tools/ Equipment
Lesson and Materials Needed for the
1 Installation of Wire Ways and

Cable Trays in Line with
Job Requirements
What’s New
This lesson allows the student to prepare, familiarize and install essential
things needed in installing wire ways and cable trays. So, explore and experience
the lesson in the preparation, installation and safety precautions during the cable
trays and wire ways installation.
Think of It!
Each building has issues with cable management. The link plate and wire
ways framework help compose the links for them to be out of sight. They are
ensured as opposed to uncover and to save money on costly fix cost it likewise
ensured. Aesthetic structures and additional wire ways can address changing
issues through development or reconfiguration.
Before discussing the lesson in this module, there are terms used that need
to be defined for you to understand the concepts before proceeding to the activity.
Definition of Terms
Philip Screw Driver - has a cross tip resembling a positive (+) sign. This is used
to drive screws with cross slot heads.
Claw Hammer - is a hammer with one side of the head split and curved and
used for extracting nails.
Hacksaw - is a tool used to cut metal conduit and armored cable.
Clamps - are electrical materials used to hold and anchor electrical conduits in
its proper position.
Channel - is a metal bar of flattened U shaped.
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Equipment - is any tool that uses electricity or any material that protects from
irregularities.
Hinge - is a flexible joint.
ink plate - is also called cable tray or cable ladder.
Mounting- something that could be attach with another component.
NEC - means National Electrical Code.
Trough - It is channel where the wire ways and cables pass through.
What Is It
Cable Tray
It is a framework that grants safe wires transport across open ranges and
gives protection from overheating. It is a connection of the load up structure which
is created by entering or leaving the new or existing wires in the plate. These are
used to manage considerable bundle and shield them from any damages.
It is classified by the NEC (NFPA 70 the National Electrical Code) as a

support system and not as a raceway. Generally speaking, raceway thoroughly
encases the connection inside it.
Wire Ways
Wire ways are intended to protect links from natural contaminants, for
example, dust, soil, oil and dampness. These are sometimes known as troughs or
gutters inside the electrical framework.
Cable Trunking
It is an enclosed area for most part with a rectangular cross segment and
with one removable or hinged side that is utilized to secure links and give space to
other electrical gear.
Tools and Equipment Needed for the Installation of Cable Trays and Wire
Ways
Electrical task can be practiced systematically to save time and resources.

2
A large portion of the work is impossible using exposed hands. To carry out the
responsibility, devices and equipment are expected to take a big role out of the
activity. This lesson will discuss the functions/ uses of each tool and equipment for
installing cable trays and wire ways.
The common tools and equipment needed in installation of wire ways and
cable trays are:
Portable Electric Drill
It is a handy boring machine with a toss limit of

¼” to 3/8”. It is utilized in making openings on
metal sheets and solid dividers.
Source: www.google.com
Hacksaw
This device is utilized to cut metal conductor

and protected link. Source: www.google.com
Measuring Tape
It is an adaptable ruler used to gauge size or

separation. Source: www.google.com
Open-End Wrench
A wrench is often double ended with various

estimated opening at each end. Source: www.google.com
Hammer
These are tools used in driving or pounding and

pulling out nails. They are made of hard steel,
wood, plastic or rubber. Source: www.google.com
Flat File
This can be used as substitute to hone tools

with blade, file materials or for reburying.
Philip Screw Drivers
This is used to drive screws with cross slot

heads. Source: www.google.com
Cable Clips
It is a cable mounting and management tool

used for securing cables and wiring to fixed points. Source: www.google.com
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Spirit Level
It is a level instrument designed to indicate

whether horizontal or vertical. Source: www.google.com
Concrete Screws
These are the only kind of screws that are

adequate to penetrate concrete. Source: www.google.com
Offset Bolt Cutters
These are called bolt cropper, which are used

for cutting catches, bolts and wire mesh. Source: www.google.com
Appropriate Safety Equipment
These are equipment that will protect workers

against health or safety risks on the job.
Cut Edge Sealant
This is used to seal cut edges of TPO

membrane providing a water proof barrier where
scrim reinforcement is exposed. Source: www.google.com
Types of Cable Trays - Their Advantages and Disadvantages
Cable tray systems are replacements to wire ways and electrical conduit,
which completely enclose cables. Cable trays are capable of assisting all types of
wirings such as:
- High Voltage Power

- Power Distribution Cables
- Control Cables
- Telecommunication Cables
- Fiber Optical Cables
Purpose:
Cables trays are mechanisms of support system for power and

communication cables and wires. A cable tray system supports and protects both
power and signal cables and facilities upgrading, increasing, reconfiguring, or
relocating networks.
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Most of the cable tray systems are open allowing efficient heat dissipation
and easy access for replacement and repairs. Although typically suspended from
ceilings or affixed to walls, some cable tray systems are suitable for underfloor
use.
Types of Cable Trays
1. Ladder Cable Tray

2. Perforated Cable Tray
3. Solid Bottom Cable Tray
4. Wire Mesh Cable Tray
5. Channel Cable Tray
The choice of cable tray depends upon the number of cables, size, spacing,
and weight of cable in the tray.
Ladder Cable Tray
Ladder cable tray has two side rails connected by rungs. This type of cable
tray is operative because the ladder rungs give you easy accessibility to the
cables from the top or bottom.
The stairs of the ladder cable trays provide convenient anchors for trying
down the cables in the non-horizontal cable tray runs or where the positions of
the cable must be maintained in the horizontal cable tray runs.
Perforated Cable Tray
This consists of a ventilated end with side rails. It provides more support
to cables than the ladder-type.
Solid-Bottom Cable Tray
Solid-bottom cable trays for fiber–optic cable installations where loose of

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cables may interrupt system routine. Solid-bottom (non-ventilated) cable trays are
preferred. However, the main purpose for choosing solid-bottom trays is the
concern for electromagnetic/ radio-frequency interference protection.
Wire Mesh Cable Tray
Wire mesh cable tray, also called basket cable tray, is a kind of cable tray
made of stainless-steel wires by welding wires together forming a basket-like
mesh. Cable trays are mainly used for low voltage, telecommunication, and fiber
optic cables supported on short spans.
Channel Cable Tray
Channel cable tray is a metal tray that can be used for very small cable
installations.
Materials
1. Metallic
Aluminum: resist corrosion; excellent strength-to-weight ratio. Aluminum is

most commonly used because it is lightweight.
Steel: Electric Shielding; low thermal expansion

Stainless Steel: superior corrosion resistance; withstand high temperatures.
2. Non-Metallic
Fiber Glass: Non-conductive; resists corrosion; lightweight
Precautions
The most important issue is to ensure that the bend radius for the fiber-
optic
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or coaxial cable is maintained within the standards.
Flammable dust and clutter may accumulate if the trays are not routinely
checked and kept clean.
Advantages
1. Less expensive
One of the big advantages in using a cable tray is it has a lower cost as
compared to other methods of protecting wiring on the production floor.
2. Maintenance
Cables are directly visible for maintenance checks. Changing of cables is

easy because cables can enter or exit the tray at any point of the structure.
3. Safety
Regular housekeeping is important for safety. Cable is important for safe

keeping as it is installed in hard-to-reach places.
Disadvantages
The solid bottom cable tray system has a disadvantage. Moisture can back
log in the trays. The wire ways are typically produced as a metallic or non-metallic
channel with hinged or removable covers so that the cables contained are well
protected but still accessible.
Types
Type Description Image

Lay-In One side of the trough opens
via hinges; wires are possibly laid
in instead of pulled trough.
Pull-Trough Wires or cables must be
strung through trough; these may
still have a hinged lid to allow
cable entry.
Cable Trough Simple trough with no protection
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Activity 1
What’s More
A. Multiple Choice
Directions: Choose the letter of the best answer. Write the chosen letter on
a separate sheet of paper.
1. A wrench is often double ended with different-sized opening at each end

a. open-end wrench b. flat file
c. cable tray d. spirit level
2. It is used to seal cut edges of TPO membrane providing a water proof barrier
where scrim reinforcement is exposed.
a. flat file b. cut edge sealant
c. hammer d. cable tray
3. It can be used as substitute to sharpen tools with blade, file materials or for
reburring.
a. cut edge sealant b. hammer
c. flat file d. cable tray
4. It is the system that supports and protects both power and signal cables and
facilities upgrading, expanding, reconfiguring, or relocating networks.
a. hammer b. wire ways
c. cable tray d. spirit level
5. it is a level instrument designed to indicate whether horizontal or vertical.
a. measuring tape b. cable tray
c. spirit level d. clip
6. These are tools used in driving or pounding and pulling out nails.
a. philip screw c. spirit level
b. flat file d. hammer
7. It is a handy boring machine with a toss limit of ¼” to 3/8”. It is utilized in
making openings on metal sheets and solid dividers.
c. portable electric drill d. clip
8. It is the only kind of screw that is strong enough to penetrate concrete.
a. concrete screw b. cable tray
c. spirit level d. clip
9. It is a cable mounting and management tool used for securing cables and
wiring to fixed points.
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a. hammer b. cable tray
c. cable clips d. spirit level
10. It is a flexible ruler used to measure size or distance.
c. clip d. spirit level
B. Classification
Directions: Classify the words found inside the box whether it is a cable tray or
wire ways. Write your answers on a separate sheet of paper.
lay-in channel wire mesh

cable trough pull trough solid-bottom
Cable Tray Wire Way

11. __________ 14. __________
12. __________ 15. __________
13. __________ 16. __________
Activity 2
Directions: Match the word with the image shown below. Write the letter of
the corresponding answer on the space provided before the
number of the image. Copy your answer on another sheet of
paper.
A. Appropriate Electrical Safety Equipment F. Open-End Wrench

B. Screw Bolt G. Cable Clip
C. Portable Electric Drill H. Hacksaw
D. Philip Screw Drivers I. Hammer
E. Spirit Level J. Flat File
1. 2. 3.
4. 5. 6.
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7. 8. 9.
10.
Source: Images taken from www.google.com
Activity 3. Filling the Blanks
What I Have Learned
Directions: Complete the statements by writing the word or words on the blank.
Write your answers on another sheet of paper.
1. _______ systems are alternatives to wire ways and electrical conduit,

which completely enclose cables.
2. Cable trays are mainly used for low voltage _______ and fiber optic
cables supported on short spans.
3. _______ has two side rails connected by rungs. This type of cable tray is
effective because the ladder rungs give you easy accessibility to the
cables.
4. _______, also called basket cable tray, is a kind of cable tray made of
stainless steel wires.
5. _______ is an enclosure usually with rectangular cross section and with
one removable or hinged side.
6. The _______ is used in measuring size and distance.
7. The _______ metallic materials that resist corrosion.
8. _______ is a simple trough without a cover.
9. A _______ is a non-metallic material that resists corrosion; it is
lightweight.
10. _______ consists of a ventilated bottom with side rails.
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What I Can Do
Activity 4
Directions: Answer the questions/ statements below. Write your answers on

another sheet of paper.
1. Name at least ten (10) electrical tools used for installation of cable trays
and wire ways.
2. What is the importance of using cable tray and wire ways?
3. Why do you need to follow weight instruction on inserting a cable?
Assessment
Multiple Choice
Directions: Choose the letter of the best answer. Write the chosen letter on a
separate sheet of paper.
1. It is a hand supported, power driven machine tool that rotates and twists
drills.
a. open-end wrench c. cable tray
b. portable electric tool d. offset bolt cutters
2. It is a flexible ruler used to measure size or distance.
a. spirit level c. hacksaw
b. measuring tape d. cut edge sealant
3. It is a plier intended for cutting wires.
a. hacksaw c. wire cutter
b. cut edge sealant d. offset bolt cutters
4. It is smaller than a maul or beetle and is usually used in carpentry to knock
wooden pieces together or drive dowels or chisels.
a. spirit level c. hammer
b. hacksaw d. flat file
5. It is a fine-toothed saw mainly made for cutting metal.
a. hacksaw c. wire cutter
b. cut edge sealant d. offset bolt cutters
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6. It can be used as substitute to sharpen tools with blade, file materials or for
reburying.
7. It is a wrench which is often double ended with different-sized opening at
each end.
b. hacksaw d. open-end wrench
8. It has a slot on its top that looks like a cross.
a. flat file c. philip screw driver
b. hacksaw d. hammer
9. It is the system that supports and protects both power and signal cables
and facilities upgrading, expanding, reconfiguring, or relocating networks.
a. hammer c. cable tray
b. wireways d. spirit level
10. It is a level instrument designed to indicate whether horizontal or vertical.
11. It is the only kind of screw that is strong enough to penetrate concrete.
a. concrete screws c. philip screw driver
b. cable clips d. flat file
12. Also called as bolt cropper, it is a tool used for cutting padlocks, bolts and
wire mesh.
a. offset bolt cutters c. hammer
b. screw bolts d. flat file
13. It is a cable mounting and management tool used for securing cables and
wirings to fixed points.
a. cable clips c. flat file
b. hacksaw d. cable tray
14. It is used to seal cut edges of TPO membrane providing a water proof
barrier where scrim reinforcement is exposed.
a. cut edge sealant c. flat file
b. hammer d. cable tray
15. These are wires or cables that must be strung through; these may still
have a hinged lid to allow cable access.
a. lay-in c. cable tray
b. cable trunking d. pull trough
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Installing Wire Ways and

esson
Cable Trays According to the
2 Job Requirements
Following PEC and NEC
What’s New
Cable Tray and Wire Way Installation
Cable tray is used to support insulated electrical cables for control,

communication and power distribution. It is to ensure that cables inside the tray is
safe and with proper installation, the design and configuration of the cable tray will
be more convenient for eyes. It would be easy for the installer to have an
additional component or tray if needed.
In this new generation, the things that are advantageous must be applied to
have a convenient and secured environment. With this, the cable tray and wire
way installation intend to be part of that change in terms of quality, safety and cost
efficiency of materials.
The installation of this system provides assurance that it will last longer.
The installer for this system can easily attach new suggested component and be
able to determine whether there is irregularity of the timeworn installed cables on
the tray or it can be easily removed or fixed.
What Is It
Cable trays and their supports should be strong enough to meet the load
requirements of the cable management system including links or any future link
options and some other extra loads applied to the framework. Support systems
can be broken down into a number of elements or components. To design a safe
system, it is necessary to check each element to ensure that:
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 it can securely support the load being inserted upon it,
 the proposed fixing to contiguous segments are likewise adequate for
the intended load, and
 any declared diversion limits are not exceeded.
I. Beams
Any installed cable ladder, link plate or cable tray support system can be
considered structurally loaded beam. There are four basic beam structures found
in a usual installation.
A. Simply Supported Beam
A single length of cable ladder, but not restrained by two supports,

represents an essentially supported beam, which will bend when a load is
applied to it.
B. Fixed Beam
A fixed beam preparation is a single structural member with both ends

attached firmly to supports. Compared with a simple beam, this beam increases
the ability to carry loads but unlike the cable ladder or cable tray, it can be
considered as a fixed beam.
C. Continuous Beam
A continuous beam has good numbers of intervals that makes it close
to the links.
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D. Cantilever Beam
It has brackets which are used to support cable ladder or cable tray.
These are being fixed to the structure at one end only. For cable ladder or cable
tray installations, it is normal to consider the cable load to be uniformly
distributed along the length of the cantilever arm.
II. Channel Nuts
When a support is fixed to a system using a channel nut and set screw,
there are two safe working load values (slip and pull out).
Typical Types of Channel Nuts
III. Brackets
Structure brackets of all types are generally used to aid in the onsite
fabrication of a support construction.
• Insert the channel nut between the flanges of the channel and rotate it
clockwise until the slots in its face align with the channel flanges.
• Fit-in the flat washer to the given screw.
• Fit in the bracket such that the holes are aligned with the channel nut
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and put it over the channel.
• Pass the set screw (with washer fitted) through the hole in the bracket and
into the channel nut.
• Tighten the set screw to the necessary rotation.
The example below is the detail of a 90º angle bracket in combination with
channel and relevant fixings.
Use of brackets with channel

IV. Base Plates
Base plates are commonly used to attach vertical lengths of channel

section to a well-founded floor and are usually connected to channels.
• Place the base plates in position.

• Locate the channel nuts into the channel sections.
• Insert the channel section into the base plate.
• Arrange in a line the channel nuts with the fixing holes in the base plate.
• Fit in the set screw and the flat washers through the base plate and into
the channel nuts.
• Tighten up the set screws.
V. Beam Clamps
1. Beam Clamps - Window Type

Window type beam clamps are generally used to attach lengths of channel
section to current supporting beams and are generally connecting channel to
beam for moderate loads.
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 Over the hole of the bracket, insert the channel.
 Fit in the cone pointed set screw through the threaded fixing hole in the
bracket
 Place the inner face of the beam clamp against the support structure.
 Tighten the set screw to fix the beam clamp in place.
Window Type ‘U’ Bolt Type
2. Beam Clamps - ‘U’ Bolt Type
‘U’ bolt type beam clamps are generally used to attach lengths of channel
section to existing supporting beams and are generally fixing channel to beam for
heavier loads.
 Place the ‘U’ bolt over the channel and insert it through the holes in
the bracket.
 Put in the flat washers and nuts to the ‘U’ bolt.
 Position the ‘U’ bolt such that it rests against the edge of the existing
supporting beams.
 Tighten up the nuts to attach the beam clamp in place.
VI. Channel Type Cantilever Arms
Channel type cantilever arms are commonly used to provide support to

services on a framework installation and are normally connected to channels.
 Attach the channel nuts between the flanges of the channel and rotate it
clockwise until the slots align with the channel flanges.
 Attach the flat washers to the given screws.
 Place the cantilever arm such that the clearance holes in the back plate
are aligned with the threaded holes in the channel nuts.
 Put on the set screws (with the washer) through the holes in the back
plate into the channel nuts.
 Tighten up the set screws.
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VII. Channel Type Trapeze Hangers
Trapeze hangers are appropriate for use with cable ladder and cable tray
assisted by threaded rods hung from ceiling brackets, channel support systems or
from beam clamps attached to steel beams.
VIII. Cantilever Arms
Cantilever arms allow horizontal runs of cable ladder or cable tray to be

fixed to vertical steel, concrete surfaces or to channel support systems
IX. Threaded Rod Suspension Brackets

Threaded rod suspension brackets are advantageous when space is limited
and when more number of cable ladders or cable trays are attached on the same
threaded rods in a multiple level installation.
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X. Wall Support Brackets
Wall support brackets are effective ways of fitting any width of cable tray,
running either vertically or horizontally to a vertical foundation.
XI. Overhead Hangers (Specific to Cable Tray)
Overhead hangers allow tray to be supported from a single threaded rod

giving easy entrance for laying cables from one side of the tray only.
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XII. Hold Down Brackets and Clips
Hold down brackets and clips are used for providing protection to cable
ladder and cable tray for horizontal supports.
Proper Installation, Bending and How to Do Wire Reduction for Wire Mesh
Cable Tray
Basic Steps In Cutting Wire Mesh Cable Tray Using Bolt Cutters
1. Face tray up. Slide the cutter next to vertical wire and
cut.
2. Turn tray to the side with the open side facing you.
And then repeat step 1 to cut wire.
3. Finish cutting all the side wires.
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4. Turn tray to the open-side down and cut wires from
bottom of tray.
5. Polish cutting by moving to other side of tray to cut

left over wires,
90° Horizontal Bends (Short Radius)
Source: flextray-wire-basket-section-cable-tray-catalog
90° Horizontal Bends (Long Radius)

90° Horizontal Bends from Two (2) Straight Sections
Cut the required number of wire side sections listed in the chart.
21
Reducers
Vertical Inside and Outside Bends
Cut wire section as shown and bend to desired angle.

2” deep wire mesh tray has two (2) side wires - as shown.
4” deep wire mesh tray has three (3) side wires.
6” deep wire mesh tray has four (4) side wires.
22
This is the usual wire way setting.
Wall Base Trim - finishes the cable opening at the wall.

Top Cap - fits into the bottom track.
Wire Management Clips - secure cabling in wire way.
Concrete Screws - secure bottom track to the floor.
Ramps - fit into the bottom track.
Bottom Track - refers to slots into ramps.
End Component - Slots into ramps is secured with set screws.
23
This is the usual wire ways installation.
Activity 1. Filling the Blanks

What’s More
A. Directions: Write the word or words to complete the sentence. Write your
answers on a separate answer sheet.
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1. _______ are effective ways of fitting any width of cable tray, running either
vertically or horizontally to a vertical foundation.
2. _______ are generally used to attach lengths of channel section to current
supporting beams and are generally connecting channel to beam for
moderate loads.
3. _______ allow tray to be supported from a single threaded rod giving easy
entrance for laying cables from one side of the tray only.
4. A _______ preparation is a single structural member with both ends attached
firmly to supports.
5. _______ and _______ are used for providing protection to cable ladder and
cable tray to horizontal supports.
6. _______ brackets are advantageous when space is limited.
7. _______ are commonly used to attach vertical lengths of channel section to
a well-founded floor and are usually connected to channels.
8. When a support is fixed to a system using a _______ and set screw, there
are two safe working load values that slip and pull out.
9. _______ of all types are generally used to aid in the onsite fabrication of a
support construction.
10. _______ represents to an essentially supported beam, which will bend as
any load applied to it.
B. Directions: For numbers 11-15, please write the right steps in cutting mesh
cable tray using bolt cutters from start to end using the letters
A, B, C, D or E.
_______ 11. Turn tray to the side with the open side facing you. And then
repeat step 1 to cut wire.
_______ 12. Face the tray up. Slide the cutter next to vertical wire and cut.
_______ 13. Finish cutting all the side wires.
_______ 14. Polish cutting by moving to other side of tray to cut the left over
wires.
_______ 15. Turn tray to the open-side down and cut wires from bottom of
the tray.
Activity 2. Matching Type

Directions: Match Column A with Column B. Write the letters of your answers on
the blank before the numbers in column A. Transfer your answers on
a separate sheet of paper.
Column A Column B
_____ 1. a. 90 ͦ Horizontal Bend (Long Radius}
25
_____ 2. b. Cantilever Beam
_____ 3. c. Channel Nuts
_____ 4.
d. Base Plates
_____ 5. e. Continuous Beam
_____ 6. f. Beam Clamps
_____ 7. g. 90° Horizontal Bend

2 Straight Section
_____ 8. h. 90° Horizontal Bend (Short Radius)
_____ 9. i. Reducer
_____ 10. j. Vertical Inside and Outside Bend

26
What I Have Learned
Activity 3
A. Directions: Label each item on a wire way setting. Put your answers on a
1. _________
2. _________
3. _________
4. _________
5. _________
6. _________
7. _________
B. True or False
Directions: For number 8-15, write T if the statement is correct and F if it is

false. Write your answers on a separate sheet of paper.
8. Cable clips secure cable in the wire way.

9. Channel type cantilever arms are commonly used to provide support to
services on a framework.
10. Beam clamps allow tray to be supported from a single threaded rod giving
easy entrance for laying cables from one side of the tray only.
11. Hold down brackets and clips are used for providing protection to cable
ladder and cable tray for horizontal supports.
12. A continuous beam preparation is a single structural member with both
ends attached firmly to supports.
13. There are two safe working load values in using channel nut and screw (slip
and pull out).
14. Trapeze hangers are inappropriate to use with cable ladder and cable tray.
15. Cantilever arms are advantageous when space is limited.
27
What I Can Do
Activity 4
Directions: Answer the questions on a separate sheet of paper.
1. What are the seven (7) basic steps in installing wire ways?
2. What are the four (4) types of beams?
3. What are the advantages that the cable tray system brings to our structure
when installed?
4. If you find some disadvantages of cable tray installation, what are those?
What are your personal suggestions to remedy this matter?
Assessment
Multiple Choice
1. This allows tray to be supported from a single threaded rod giving easy
entrance for laying cables from one side of the tray only.
a. overhead hangers c. cantilever
b. fixed beam d. channel nuts
2. It is the process of wire mesh cable tray set-up.
I. Turn the tray to the side with the open side facing you. And then
repeat step 1 to cut wire.
II. Face the tray up. Slide cutter next to vertical wire and cut.
III. Finish cutting all side wires.
IV. Polish cutting by moving to other side of tray to cut left over wires.
V. Turn tray to the open-side down and cut wires from bottom of tray.
a. I, II, III, IV, V c. II, I, III, V, IV
b. II, I, IV, V, III d. I, III, IV, II, III
3. It is attached to the vertical lengths of channel section to a well-founded floor
and are usually connected to channels.
a. overhead hangers c. base plates
b. cantilever beam d. channel nuts
28
4. It has brackets which are used to support cable ladder or cable tray. These
are being fixed to the structure at one end only.
a. overhead hangers c. base plates
5. It is an effective way of fitting any width of cable tray.
a. wall support bracket c. base plates
6. It is any installed support system that is structurally loaded and is considered
as _____.
a. beams c. brackets
b. channel nuts d. base plates
7. The process of base plates attached to vertical lengths of channel section.
I. Locate the channel nuts into the channel sections.
II. Insert the channel section into the base plate.
III. Arrange in a line the channel nuts with the fixing holes in the base
plate.
IV. Fit in the set screw and flat washers through the base plate and
into the channel nuts.
V. Tighten up the set screws.
a. III, I, V, IV, II c. IV, I, V, III, II
b. IV, I, V, II, III d. III, I, II, V, IV
8. It is appropriate to use the cable ladder and cable tray assisted by threaded
rods hung from ceiling brackets.
a. trapeze hangers c. cantilever arm
b. brackets d. base plates
9. Hold down brackets and clips are used for providing protection to cable
ladder and cable tray to horizontal supports.
a. hold down brackets and clips c. brackets
b. continuous beam d. trapeze hangers
10. It has good numbers of intervals that have a closer linking.
a. continuous beam c. trapeze hangers
b. hold down brackets and clips d. brackets
11. How do you use brackets with channels?
I. Fit in the bracket such that the holes are aligned with the channel
nut and put it over the channel.
II. Insert the channel nut between the flanges of the channel and
rotate it clockwise until the slots in its face align with the channel
flanges.
III. Tighten the set screw to the necessary rotation.
IV. Fit-in the flat washer to the given screw.
V. Pass the set screw (with washer fitted) through the hole in the
bracket and into the channel nut.
29
a. I, IV, II, V, III c. II, III, IV, I, V
b. II, IV, I, V, III d. I, IV, V, II, III
12. It is used for securing cable in the wire way.
a. channel nuts c. cable clip
b. cable tray d. beam clamp
13. Using the ‘U’ bolt clamps, how do you attach the lengths of channel section
to current supporting beams?
I. Position the ‘U’ bolt such that it rests against the edge of the
existing supporting beams.
II. Put in the flat washers and nuts to the ‘U’ bolt.
III. Tighten up the nuts to attach the beam clamp in place.
IV. Place the ‘U’ bolt over the channel and insert it through the holes
in the bracket.
a. I, II, III, IV c. IV, III, II, I
b. IV, II, I, III d. I, II, IV, III
14. Which of the following figures is 90° horizontal bends (long radius)?
a. c.
b. d.
15. Which of the figures below is vertical inside and outside bend?
a. c.
b. d.
30
Observing Safety Procedure

Lesson in Installing Wire Ways and
3 Cable Trays According to

OHS Guidelines and
Procedures
What’s New
Cable Trays Are In!
Link plate can give a safe component of a power, low voltage control, data
or telecommunication wiring distributions and wiring distribution system. Cables in
trays can be easy to mark, find, and remove. Their adaptability settles on link plate
or cable trays and decent decision for establishment circumstances that requires
upgrading, reconfiguring or development.
Pursuant to the Occupational Safety and Health Act, managers must agree
to an OSHA-affirmed state plan. In addition, pursuant to section 5(a) (1), the
General Duty Clause of the Act, employers must provide their employees with a
good workplace free from recognized hazards that cause death or serious
physical harm.
Why Environment Safety Is Significant
Work environment security is significant for every single representative in

the business since all employees want to work in a sheltered and ensured
atmosphere. Well-being and security are key factors for all the enterprises to
advance the health of workers and bosses. It is an obligation and duty of the
organization to take care of the employee’s security.
31
What Is It
According to the 2005 National Electrical Code® (NEC), a cable tray

system is “a unit or assembly of units or sections and associated fittings forming a
structural system used to securely fasten or support cables and raceways.” Cable
trays support cables across open spans in the same manner that roadway bridges
support traffic. Cable trays are not raceways and are treated as structural
component of a facility’s electrical system. These are part of a planned cable
management system to support, route, protect and provide a pathway for cable
systems.
Hazards Associated with Overloaded Cable Trays
Overloading and improperly secured wires in cable trays can lead to a

number of serious hazards. Every link plate and their related backings are
appraised for a particular greatest weight in relation to the admissible fill zone and
dispersing of the link plate supports. Overloading cable trays can lead the tray to
collapse and the connecting points may cause hazards to persons underneath the
cable tray. These may also lead to possible electric shock and arc flash/ blast
events from component failure when the cables are no longer supported.
Additionally, cables in trays can be scratched by improperly securing and installing
other cables and wires in the same cable tray.
When cable trays are overloaded, excessive heat build-up in and around
live conductors can cause the insulation to break down that lead to potential fires.
Fires can occur either in the cable tray (which may provide a fire path) or in
combustible materials near the cable tray.
Suggested Practices and Tips to Eliminate Shop Accidents When Installing

Cable Trays and Wire Ways
1. Be conscious on your environments.
Source: shutterstock.com
32
Every job site has natural dangers, whether those are large, heavy
machinery, conveyor belts, or even tripping over items in the office. The best way
to keep yourself safe is to be aware of your surroundings. The more acclimated
you are with the tasks and workplace, the more aware you have to be of the
potential hazards. Knowing the environment and being aware of potential hazards
will help you and the co-workers to avoid dangerous circumstances.
2. Preserve correct posture.
Source: google.com
The old saying, “lift with your legs-not your back,” in any case, keeps the
right stance alludes to something other than workers who lift things consistently.
When working at a desk, ensure to have great posture to maintain a strategic
distance from back issues, neck torment, and even carpal tunnel. When lifting
electrical equipment, be sure to keep the back straight and lift with the legs. If
something to lift is too heavy, take a few seconds to find the manual or automatic
aid that can help or lift with an accomplice.
3. Take regular breaks.
It is significant that representatives consistently take their standard breaks.

OSHA has put them in place for a reason: tired workers are the most prone to an
incident. The more worn out the worker is, the less aware he is of the
surroundings and more at risk he is for an injury. Take the breaks on a given
regular schedule to keep fresh. Plan for more difficult tasks at the beginning of the
shift when generally ready.
33
4. Never take shortcuts on your safety.
Work environment methods exist to protect representatives, particularly

those operating the heavy machinery. It is imperative to consistently utilize each
device and machine you are working with. Shortcuts lead to injury and are not
worth the small amount of time they might save you. Be certain to continuously
utilize the correct instrument for the activity effectively.
5. Be aware of new safety procedures.
At the point when the organization buys another machine, or even

preparing updates, it is critical to ensure to be mindful of the new security methods
that accompany those changes. While the employer is accountable for providing
the proper training and the supervisor ensures to assign a training time, it is their
responsibility to let the workers understand the new safety procedures and
execute properly before utilizing any new hardware. The worker should ask if he
does not understand how to operate the machine or equipment.
6. Keep emergency exits clear.

Never place anything in front of an emergency exit door even if it is only for
a few minutes. While this might sound like ‘what for’, it is surprising how many
ladders, trolley carts, and even forklifts get set in front of emergency exits. Ensure
the pathways are clear for equipment emergency shutoffs in case something
needs to be powered down directly.
34
7. Report unsafe settings.
Source: google.com
The best way to prevent risky conditions from happening is to report them
to managers when these are noticed and part of the solution. The supervisor is
legally obligated to provide all employees with safe working environment and deal
with any hazardous conditions. If ever there are hazardous conditions occurring, It
is also important to always report as soon as possible to keep the employer,
supervisor or employees safe. Work together to find a way to prevent the unsafe
condition from happening again in the future.
8. Constantly wear personal protective equipment.
Source: victorstock
Finally, make sure to always wear the personal protective equipment (PPE)
provided by the employer. Regardless whether it is something as little as earplugs,
or something as extensive as a compound suit, this PPE should be genuine in
purpose. Wearing the right PPE for the job being performed is a simple way to
keep safe from injury.
Basic PPE’s Used During Installation

1. Protective Clothing with Long Sleeves
35
Keep the collar and pockets buttoned. Do not wear oily or greasy clothing.
Never install when the body is exposed. On the off chance that electrical suit or
cover is not accessible, wear a spread dress instead of cotton since it gives better
protection.
2. Helmet or Hard Hat
Upon installation, wearing of helmet is necessary. It protects the head from

falling debris.
3. Goggles
This is for eye protection. Do not start using electric drill or any electrical
equipment unless the eyes and those of other workers near the one operating or
doing the task are protected by safety glasses.
4. Gloves (Leather or Rubber)
Wear leather gloves at all times to protect the hands from cut or direct
exposure to electricity when installing.
5. Hearing Protectors
During installation especially when using electrical equipment, hearing

36
protectors are very important to avoid hearing defects caused by
unnecessary noise by the equipment.
6. Safety Footwear
Wear safety shoes to protect the foot from heavy tools or materials that will
be used.
5S System of Good Housekeeping
1. Seiri - Sort
• Taking out and disposing unnecessary things

• Unnecessary things are discarded or arranged.
Source: https://leanmanufacturingtools.org
2. Seiton - Systematize
• Arranging of essential things in great request and simple access
• Things in the work environment are arranged for comfortable access and
repeated use.
3. Seiso - Sweep
• Cleaning of the working environment after use
37
4. Seiketsu - Sanitize/ Standardize

• Keeping up the workplace in exclusive desire for housekeeping and
sterilization
• Disinfection prevents the spread of microorganisms that cannot be seen with
unaided eyes.
5. Shitsuke - Self Discipline

• Doing things usually or normally without being told
• Regardless whether you have the information and abilities and yet you do not
exercise self-control, these are considered as pointless.
What’s More
Activity 1
A. Directions: Read the statements below. Identify which among the 5S of good
housekeeping each statement belongs. Select from SEIRI,
SEITON, SEISO, SEIKETSU or SHITSUKE. Write the answers on
another sheet of paper.
38
1. It refers to the sorting of clutters from the other items within the work area
that are actually needed.
2. It is ensuring that the company continually improves using the previous
stages of 5S.
3. It conducts audit and so forth.
4. The standard work is one of the most important principles of every
manufacturer.
5. This will ensure that any non-conformity stands out, such as oil leak from a
machine onto a bright, newly painted clean floor.
6. It is the cleaning of the area, tools, machines and other equipment to ensure
that everything is returned to a “nearly new” status.
7. It is the arranging of everything in an effective manner through the use of
ergonomic principles and ensuring that every item “has a place and
everything is in its place.
8. The process of ensuring that what is done within the first three stages of 5S
become standardized.
9. It is ensuring that there are common standards and ways of working.
10. It means maintaining the housekeeping.
B. Directions: Based on your own understanding, write the answers on a

1. Seiri - Sort
_______________________________________________________________
2. Seiton - Systematize
_______________________________________________________________
3. Seiso-Sweep
_______________________________________________________________
4. Seiketsu-Standardize
_________________________________________________________________
5. Shitsuke-Self-Discipline
_________________________________________________________________
Activity 2
Directions: Match the word with the image. Write the letter of the
corresponding answers on the space provided before the number.
Transfer these on another sheet of paper.
A. Seiketsu F. Safety Shoes
B. Protective Clothing G. Leather Gloves
C. Seisu H. Hard Hat
D. Seiri I. Googles
E. Seiton J. Ear Muff
39
1. 2. 3.
4. 5. 6.
7. 8. 9.
10.
Source: images taken from www.google.com
Activity 3. True or False
What I Have Learned

Directions: Read each statement below carefully. Write True if the statement is
correct and False if is not on a separate answer sheet.
1. Employers must give their workers a decent working environment and free
from perceived dangers that may cause death or serious physical harm.
2. Not all workers desire to work in a safe and protected atmosphere.
3. Cable trays are not raceways.
4. Cables in trays can be damaged by properly securing and installing other
cables and wires in the same cable tray.
40
5. The best way to keep yourself safe is not being aware of the surroundings.
6. If you ever need to lift something you think might be too heavy, take a few
seconds to find a mechanical aid that can help you or lift with a partner.
7. Tired workers are the most prone to accident.
8. Shortcuts lead to injury and are not worth the small amount of time they
might save you.
9. Wearing the correct PPE for the job you are performing is just another way to
keep safe from injury.
10. Place anything in front of an emergency exit door.
What I Can Do
Activity 4
Directions: Answer the questions below on a separate sheet of paper.
1. Among the eight (8) suggested practices and tips that will help eliminate
shop accidents, what is the most important?
2. Why do you need to consider safety as the first basic tool?
Assessment
Multiple Choice
1. This stage requires the team to remove all items that clearly do not belong
in the working area.
a. seiton c. shitsuke
b. seire d. seisu
2. What PPE is suitable for protection of falling debris?
a. hard hat c. protective clothing
b. goggles d. hearing protectors
3. The more accustomed you are with the job, the more you are aware on the
potential hazards.
a. Keep correct posture. c. Be aware of your surroundings
b. Take regular breaks. d. Report unsafe condition.
41
4. This means ensuring that the company continually improves using the
previous stages of 5S.
a. seiketsu c. shitsuke
b. seiton d. seisu
5. What PPE is suitable for avoiding unnecessary noise caused by equipment
during the installation process?
a. hard hat c. gloves
6. What PPE is suitable for protecting your eyes?
a. protective clothing c. gloves
7. Standard work is one of the most important principles of every manufacturer.
b. seiton d. seisu
8. It is the process of taking the required items that are remaining after the
removal of litter.
a. seiton c. shitsuke
b. seire d. seisu
9. It protects the foot from heavy tools or materials and sharp objects.
a. hard hat c. protective clothing
b. safety shoes d. hearing protectors
10. If something seems not in the right place, ______.
a. Keep correct posture. c. Be aware of the surroundings.
11. This PPE is made out of leather for protection of the hands during
installation.
a. safety shoes c. gloves
12. If you are tired from the working environment, ______.
a. Keep correct posture. c. Be aware of your surroundings.
13. When working, do not skip on the procedure for it will lead you to accident.
a. Take regular breaks. c. Keep correct posture.
b. Never shortcuts on the procedure. d. Report unsafe
condition.
14. When lifting heavy objects, what is the first thing you need to consider?
a. Keep correct posture. c. Take regular breaks.
b. Never shortcuts on the procedure. d. Report unsafe
condition.
15. This means ensuring that there are common standards and ways of
working.
b. seiton d. seisu
42
Answer Key
43
References
National Electrical Code (NEC) FG 1-1993.
beama_tray_and_ladder_practiceguide pdf.
flextray-wire-basket-section-cable tray-catalog
unitrayinstallation pdf.
shutterstock.com
victorstuck.com
www.google.com
https: //leanmanufacturingtools.org.
For inquiries or feedback, please write or call:

Department of Education - Division of Bukidnon
Office Address: Fortich Street, Sumpong, Malaybalay City, Bukidnon
Telefax: (088) 813-3634
Email Address: bukidnon@deped.gov.ph
Website: depedbukidnon.net.ph
44

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10

Development Team of the Module

Author: Jed E. Mantilla

Co-Chairpersons: Victor G. De Gracia Jr., PhD, CESO V

Members: Elbert R. Francisco, PhD, Chief ES, CID

1 Installation of Wire Ways and

It is classified by the NEC (NFPA 70 the National Electrical Code) as a

Electrical task can be practiced systematically to save time and resources.

Portable Electric Drill

It is a handy boring machine with a toss limit of

This device is utilized to cut metal conductor

It is an adaptable ruler used to gauge size or

A wrench is often double ended with various

These are tools used in driving or pounding and

This can be used as substitute to hone tools

This is used to drive screws with cross slot

It is a cable mounting and management tool

It is a level instrument designed to indicate

These are the only kind of screws that are

These are called bolt cropper, which are used

These are equipment that will protect workers

This is used to seal cut edges of TPO

Types of Cable Trays - Their Advantages and Disadvantages

- High Voltage Power

Cables trays are mechanisms of support system for power and

Types of Cable Trays

1. Ladder Cable Tray

Ladder Cable Tray

Perforated Cable Tray

Solid-Bottom Cable Tray

Solid-bottom cable trays for fiber–optic cable installations where loose of

Wire Mesh Cable Tray

Channel Cable Tray

Aluminum: resist corrosion; excellent strength-to-weight ratio. Aluminum is

Steel: Electric Shielding; low thermal expansion

Fiber Glass: Non-conductive; resists corrosion; lightweight

Cables are directly visible for maintenance checks. Changing of cables is

Regular housekeeping is important for safety. Cable is important for safe

Type Description Image

1. A wrench is often double ended with different-sized opening at each end

lay-in channel wire mesh

Cable Tray Wire Way

A. Appropriate Electrical Safety Equipment F. Open-End Wrench

Source: Images taken from www.google.com

Activity 3. Filling the Blanks

What I Have Learned

1. _______ systems are alternatives to wire ways and electrical conduit,

Directions: Answer the questions/ statements below. Write your answers on

Installing Wire Ways and

Cable Tray and Wire Way Installation

Cable tray is used to support insulated electrical cables for control,

A. Simply Supported Beam

A single length of cable ladder, but not restrained by two supports,

A fixed beam preparation is a single structural member with both ends

II. Channel Nuts

Typical Types of Channel Nuts

Use of brackets with channel

IV. Base Plates

Base plates are commonly used to attach vertical lengths of channel