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Department of Education

SPTVE

ELECTRICAL INSTALLATION AND MAINTENANCE 8

Module 1 Week 5-8

Prepare appropriate tools and materials needed in electrical wiring installation

ANTONIO B. BERAQUIT Writer

GERRY V. DOMALANTA

Validator

Schools Division Office – Muntinlupa City

Student Center for Life Skills Bldg., Centennial Ave., Brgy. Tunasan, Muntinlupa City

(02) 8805-9935 / (02) 8805-9940

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WHAT IS THE MODULE ABOUT

Welcome to the Module “Preparing Construction Materials and Tools”. This module contains training materials and activities for you to complete. The unit of competency “Prepare Construction Materials and Tools” contains the knowledge, skills and attitudes required for Building Wiring Installation course required to obtain the National Certificate (NC) level II. You are required to go through a series of learning activities in order to complete each of the learning outcomes of the module.

At the end of the lesson you are expected to:

1. Identify the tools and materials in electrical wiring instillation. 2. Prepared electrical tools and material in line with job specification.

Pre-test

A. Direction: Identify what is being referred by the following sentence. Write your answer on a separate sheet of paper. ________1. It is used to drive and loose cross – slotted – head screws. ________2. It is used to scrape surfaces of conductors and to remove big cables’ insulation. ________3. It is a pipe bending tool with handles of several sizes and lengths. ________4. It is commonly used to make terminal loops on copper wire and can reach tight places. ________5. It is used to drive and to pull out nails.

________6. It is used to bend rigid metal conduit.

________7. It is used to pull wires into the conduit or raceway.

Prepare appropriate tools and materials needed in electrical wiring

instillation

LEARNING OUTCOME 1

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________8. It is used in handling and twisting wires.

________9. It is used to measure value of voltage, current and resistance, wire length, size of

wire and conduit and other items.

_______10. This are electrical conductors with 8mm AWG size no. 8 or smaller.

This module contains the information and suggested learning activities on the preparation of construction materials and tools. It includes instructions and procedures on how to prepare appropriate tools and materials needed in electrical wiring instillation.

Electrical task can be accomplished systematically to save time, effort, and resources. Most of the work cannot be done using bare hands. To do the task, electrical tools or equipment are needed to perform the job. This lesson will discuss the function/use of each tool or equipment used in electrical wiring installations.

INFORMATION SHEET 1.1

ELECTRICAL TOOLS AND MATERIALS

Electrical Tools and Equipments

Pliers are available with both insulated and uninsulated handles, which are used in handling and twisting wires. The handle insulation is not considered sufficient protection alone. Other safety precaution must be observed. Common types of pliers are:

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Screw drivers come in various sizes and shapes. They are used to drive and pull out screws. They are made of insulated handles with either sharp and square tips. The width of the screw driver should match the width of the screw slot. Common types of screw drivers are:

Wire puller (fish wire) is used to pull wire into the conduit or raceway.

Conduit bender is a tools used to bend rigid metal conduit.

Drilling Equipment is needed to make holes in building structure for passage of wires and conduit in both new and old installation, indoor or outdoor wiring. Common types of drilling tools and equipments are:

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Soldering tools are used in making splices and taps connections of wires.

Hammers are used to drive and pull out nails. They are made of either hard steel or plastic. Common examples of hammer are:

Measuring tools and instrument. The electrician uses the following measuring tools to measure value of voltage, current and resistance, wire length, opening sizes of wire, conduit and other items.

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Sawing and cutting tool. Two of the commonly used saw are:

Electrical Materials A. Wires and Cables

• Wires are those electrical conductors with 8 mm America Wire Gauge (AWG) size no.8 or can be smaller

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TYPES OF WIRES AND CABLE INSULATION

INSULATION LETTER TYPE

Weather proof WP Slow burning SB Slow Burning Weather Proof SBW Rubber Code compound R Heat Resistant RH Moisture Resistant RW Moisture and Heat Resistant RH-RW Latex (regular) RU Latex (Moisture Resistant) RU Mineral (Metal-Sheated) MI

THERMOPLASTIC COMPOUND

Thermoplastic T Moisture-Resistant Thermoplastic TW Moisture and Heat Resistant Thermoplastic

THW

Thermoplastic and Fibrous Outer Braid TBS Thermoplastic and asbestos T Varnish Cambrid Standard Black Heat Resisting H Paper Solid type Oil Filled Oilastati Untreated Treated

ASBESTOS

Non-impregnated A and AA Impregnated AI and AIA

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Asbestos-Varnished-Cambric Outer asbestos Braid AVA Lead Covered Cotton Braid cover AVB Silicon Asbestos SA

B. Electrical Boxes Boxes are made of steel and nonmetallic materials(plastic). Metal boxes are made of #14 heavy galvanized steel and available in four principal shapes: square, octagon, rectangular and circular.

C. Fuses and circuit breakers They are electrical protective devices which are used to prevent short or over circuit. They are available in different sizes and shapes. The common types are:

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D. Switch It is an electrical device which is used to turn ON and OFF the circuit.

E. Fittings and accessories These are some electrical materials which are commonly used to fit wiring devices during wiring installation. The following are some examples of these materials:

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ACTIVITY 1.1

PREPARE ELECTRICAL TOOLS AND MATERIALS

Direction: Using the given wiring plan below, list down the tools, materials and equipment needed for the installation of the circuit.

Procedure: 1. Analyze the given working drawing. 2. Determine the type of wiring method to be used. 3. List down all the necessary tools needed for the installation.(Use the table at the next page) 4. List down the required instruments to be used in wiring the circuit. 5. List down the needed materials such as electrical boxes, wiring supports and fittings; electrical conductors; switches; and lamp sockets. 6. Identify the PPE required for the installation.

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ACTIVITY 1.2

ILLUSTRATION

Direction: In your notebook, Illustrate the following materials

1. Fuse

2. Utility box

3. Switch

4. Cable

5. Convenience outlet

Electrical task can be accomplished systematically to save _________, ________, and

_______________. Most of the work cannot be done using bare hands. To do the task,

__________________________ are needed to perform the job.

PERFORMANCE TASK

• Take a video or picture of yourself doing activity or work using any of the measuring tools

mention above, wherein you apply the uses of its tools. Select only one tool.

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Post-test

A. Direction: Identify what is being referred by the following sentence. Write your answer on a separate sheet of paper. ________1. It is used to drive and loose cross – slotted – head screws. ________2. It is used to scrape surfaces of conductors and to remove big cables’ insulation. ________3. It is a pipe bending tool with handles of several sizes and lengths. ________4. It is commonly used to make terminal loops on copper wire and can reach tight places. ________5. It is used to drive and to pull out nails.

________6. It is used to bend rigid metal conduit.

________7. It is used to pull wires into the conduit or raceway.

________8. It is used in handling and twisting wires.

________9. It is used to measure value of voltage, current and resistance, wire length, size of

wire and conduit and other items.

_______10. This are electrical conductors with 8mm AWG size no. 8 or smaller.

B. Direction. Choose the correct answer. Write the letter only.

1. They are electrical protective devices which are used to prevent short or over circuit. A. conduit B. fuse and circuit breaker C. switches D. fitting accessories 2. It is an electrical device which is used to turn ON and OFF the circuit. A. conduit B. fuse and circuit breaker C. switches D. fitting accessories 3. This electrical conductors with 8 mm America Wire Gauge (AWG) size no.8 or can be smaller. A. conduit B. fuse and circuit breaker C. switches D. wires 4. This electrical conductors which is bigger than 8mm AWG. A. conduit B. cable C. switches D. wires 5. THW stands for. A. Moisture-Resistance C. Moisture and Heat Resistance B. Moisture and Heat Resistance Thermoplastic D. Thermoplastic Resistance

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References:

1. Competency-Based Learning Materials Second Year, Building Wiring Instillation NC II, Department of Education. Answer Key Pre-test 1. Screw driver 2. Electrical pliers 3. Hickey 4. Long nose pliers 5. Claw hammer 6. Pipe bender 7. Fish wire 8. Pliers 9. Multitester 10. Wires

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LEARNING

At the end of the lesson, you are expected to:

1. Describe the process in storing electrical tools and materials

2. Store electrical materials in line with manufacturing specification.

Pre test

I. Direction: On a separate sheet of paper, write T if the statement is correct and F if it is wrong. _____ 1. All tools can be used as hammers. _____ 2. Chisel is an example of boring tools. _____ 3. Light tools and equipment should be placed at the lowest part of the cabinet shelf. _____ 4. Tooth cutting tools should be sharpened as often as necessary. _____ 5. Tools and equipment must be stored according to their kind. II. Direction: Match the tools in column A with their classification in column B. Write the letter only of the correct answer in your answer sheet. Tools Classification _______ 6. Screw driver A. drilling equipment _______ 7. claw hammer B. cutting tool _______ 8. pliers C. measuring tool _______ 9. wire gauge D. driving tool _______10. power drill E. measuring and testing

III. Direction: Identify what is being referred by the following sentence. Write your

answer on a separate sheet of paper.

1. It is an action carried out to retain an item in or to restore it at an acceptable condition.

Store Electrical Tools upon completion of job

LEARNING OUTCOME 2

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2. It is a lanolin or natural water repellent lanolin which is derived from a wool grease and a safe alternative of these more common petro-chemical based lubricants.

3. It is performed in order to prevent failures before they develop into a breakdown.

4. It is performed in order to correct a failure.

5. It is the first step of any preventive maintenance system.

INFORMATION SHEET 2.1

PROPER TOOL STORAGE

Tool Storage

Proper storage of tools ensures their durability and efficiency. They must be stored in

dry places. Correct labeling of cabinets and tool racks in accessible locations for laboratory activity in the shop is also important. To classify the tools according to their function or uses are needed so that the user will not have hard time locating them. Tools are classified as follows:

• Cutting tools

Tools under this classification are the pliers, saw and chisel. Pliers are available with both insulated and uninsulated handle primarily intended for cutting, twisting and skinning wires or electrical conductors. Saw is generally intended for cutting wood. Hack saw is used to cut metals. Chisel is an edge cutting tool which can also be considered as a boring tool. It bores hole for the purpose of making passage for electrical conduit or raceway.

• Driving tools

Hammer and the screw drivers are the tools under this classification. Hammers are

manufactured with either soft faced or hard faced. Mallet is an example of soft faced hammer commonly used to fix the winding of an electric motor. The claws and the ball

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hammers are used to drive and pull out nails and to strike metals. Screwdrivers are composed of two types: the standard and the Phillips type. They are intended as well to drive and pull out nails.

• Drilling Equipment

Drilling equipment is needed to make holes in building structure for the passage of conduit and wires in both new and old constructions. Examples of them are the power drill and the hand drill.

• Soldering equipment

It is used in joining electrical wiring, splices and taps connections. They should be

soldered, unless connections do not need so. Some examples of this equipment are soldering iron or gun and blow torch or propane torch.

• Measuring tools

The extension rule, metric rule, wire gauge and caliper are the common tools under this classification. It is intended to measure length opening size of conduit, wires and other items.

• Hydraulics

An equipment used with a pressure fluid oil to accomplish work

• Portable Tools / Equipment

Tools that can be easily moved from one place to another in normal use

• Bending Tools

It is done to produce a desired bend angle on conduit for installation. This is done

with the use of a hickey or conduit bender.

Measuring and testing tools

The tools under this kind are the multi-tester, insulation tester and clamp meter.

Basic tips in storing electrical tools and equipments

• Commonly used tools and equipment should be placed at the center shelves of the cabinet.

• Heavy tools and equipment like power grinder should be placed at the lowest

shelf.

• Light tools should be placed at the upper shelf.

• Tools and equipment must be stored according to their kinds.

• Defective tools shall be kept in section intended for them for inventory purposes.

How to handle and maintain tools?

1. Wipe or clean tools after every use with a clean and soft cloth to remove dirt. 2. Keep all tools in the tool room and tool rack.

3. Tools should be applied/wiped with an appropriate oil to prevent them from

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rusting. 4. Drill tools should be sharpened properly.

5. Tooth cutting tools should be sharpened as often as necessary.

6. Never drop tools especially precision instrument or testing tools.

7. Except for hammers, never use other tools as hammers.

8. Never use screwdrivers as wood chisel or cold chisel.

9. Never file the soldering tip of the soldering copper. If necessary, wipe the tip with

a clean soft cloth to remove dirt. 10. Do not overheat the electric soldering copper.

11. Never use drill tools. They will cause harm to your work or even to yourself. 12. Always issue or lend tools with a receipt.

13. Tools borrowed should be returned in a good condition; otherwise it should be

replaced with a new and similar kind.

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ACTIVITY SHEET 2.1

STORING TOOLS

Direction: Arrange the tools inside the cabinet or tool rack, then write the name of the tools that should be placed at the upper, center and lower shelves using the given table below. Name: ____________________________________ Section: ____________________________________ School: ____________________________________ Shop lab: ___________________________________ Purpose: ____________________________________

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Proper storage of tools ensures their _______________________and ___________________.

They must be stored in ________________. ________________of cabinets and tool racks in

accessible locations for laboratory activity in the shop is also important. To classify the tools

according to their function or uses are needed so that the user will not have

________________locating them.

Post test

I. Direction: On a separate sheet of paper, write T if the statement is correct and F if it is wrong. _____ 1. All tools can be used as hammers. _____ 2. Chisel is an example of boring tools. _____ 3. Light tools and equipment should be placed at the lowest part of the cabinet shelf. _____ 4. Tooth cutting tools should be sharpened as often as necessary. _____ 5. Tools and equipment must be stored according to their kind. II. Direction: Match the tools in column A with their classification in column B. Write the letter only of the correct answer in your answer sheet. Tools Classification _______ 6. Screw driver A. drilling equipment _______ 7. claw hammer B. cutting tool _______ 8. pliers C. measuring tool _______ 9. wire gauge D. driving tool _______10. power drill E. measuring and testing

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At the end of the lesson, you are expected to:

1. Describe maintenance procedure

2. Discuss how to lubricate and store hand tools in line with the manufacturer’s

specification.

Pre test

I. Direction: Identify what is being referred by the following sentence. Write your answer on a

separate sheet of paper.

1. It is an action carried out to retain an item in or to restore it at an acceptable

condition.

2. It is a lanolin or natural water repellent lanolin which is derived from a

wool grease and a safe alternative of these more common petro-chemical based lubricants.

3. It is performed in order to prevent failures before they develop into a breakdown. 4. It is performed in order to correct a failure.

Maintain Basic Electrical Tools and Equipment

LEARNING OUTCOME 3

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5. It is the first step of any preventive maintenance system.

II. Direction: Give at least 5 reasons why we need to put lubricants on our tools and equipment.

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INFORMATION SHEET 3.1

Maintenance Procedure

Maintenance is an action carried out to retain an item in or to restore it to an acceptable

condition.

Regular maintenance and servicing of power tools and electric tools will help to ensure

that they operate with the optimum efficiency at all times. This will not only help to keep tool operating costs low but it can also increase tool safety and productivity.

The first thing to do in any preventive maintenance system is to use your power of

observation. The most important items of "equipment" for implementing an effective preventive maintenance system are our eyes, nose, ears, experience, and judgment.

Planned maintenance

1. Preventive maintenance is performed in order to prevent failures before they

develop into a breakdown. 2. Corrective maintenance is performed in order to correct a failure.

3. Emergency maintenance is necessary to put the item at hold immediately to avoid serious consequences such as the loss of production, extensive damage of assets, and for safety reasons.

Sample checklist of tools and equipment

YES NO STORING TOOLS AND EQUIPMENT

Are the tools stored in proper storage area when not in use?

Are the defective hand power tools removed from the storage area for repair?

Are the power equipment turned OFF when not in use or when adjustments are needed?

Are the tools and equipment kept clean and in good working conditions?

Are the worn-out, deteriorated or poorly insulated power tools and equipment replaced/repaired?

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Lubrication

The following features contribute to safety and economic lubricating machine tools:

1. Plates on machines clearly show the grades of lubricant, quantities and intervals are required. The machine name, type and model should be visible.

2. Lubrication, either automatic are required not less than 200 hour intervals, and should have reservoirs large enough for

that period.

3. Suitable method of lubrication should be followed to minimize or prevent metal – to – metal contact at all times.

4. Sufficient lubricant capacity is needed to prevent overheating and thermal distortion of machine tool structures.

5. Adequate sealing should be properly observed to prevent contamination and provision for removal of contaminant collected by the lubricant in use (e.g., filters).

Types of Lubricant

1. Liquid

2. Solid

3. Grease

4. Paste

• Liquid lubricant. A lanolin or natural water repellent lanolin is derived from wool grease and a safe alternative of those common petro chemical based lubricants. These lubricants are also preventive agents against corrosion.

• Water. It can also be used as a major component aside from other based oils.

• Vegetable oils. These are primarily derived from plants and animals.

Purpose of Lubricating:

Lubricating performs the following key functions:

• Keeps moving part apart

• Reduces friction

• Transfers heat

• Carries away contaminant and debris

• Transmits power

• Protects against wear

• Prevents corrosion

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Activity 1: Complete me

Direction: Complete the graphic organizer by answering the questions below.Write your answer in your notebook.

Complete the sentence.

I have learned that regular maintenance and servicing of power tools and electric tools will help to ensure that they operate ________________________ at all times. This will

not only help to keep tool ________________________________but it can also ___________________________________________

What is the

importance of

lubrication.

Answer:

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Post test

I. Direction: Identify what is being referred by the following sentence. Write

your answer on a separate sheet of paper.

1. It is an action carried out to retain an item in or to restore it at an acceptable condition.

2. It is a lanolin or natural water repellent lanolin which is derived from a wool grease and a safe alternative of these more common petro-chemical based lubricants.

3. It is performed in order to prevent failures before they develop into a breakdown.

4. It is performed in order to correct a failure.

5. It is the first step of any preventive maintenance system.

II. Direction: Give at least 5 reasons why we need to put lubricants on our tools and equipment.

Reference:

1. Competency-Based Learning Materials Second Year, Building Wiring Instillation NC II, Department of Education.

Disclaimer:

All information and activities were copied from CBLM Building Wiring Installation Y2

of the Department of Education published in 2008. The publisher makes no

warranties with respect to the accuracy, applicability, and completeness of the

contents of this module. All information and activities contained in this module were

reviewed and refined for distance learning. The publisher does not claim ownership

over them.

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Answer Key

LO 2 - Pre test

I. 1. F 2. T 3. F 4. T 5. T

II. 1.D 2. D 3. B 4. C 5. A

LO3 – Pre test

I.

1. MAINTENANCE 2. LIQUID LUBRICANT 3. PREVENTIVE MAINTENANCE 4. CORRECTIVE MAINTENANCE 5. POWER OF OBSERVATION

II.

1. To keep moving part apart 2. To reduce friction 3. To carry away contaminant and debris 4. To protect against wear 5. To prevent corrosion