TLE Electrical Tools 1st QT (Prt 1)

TLE

Screw Drivers

These tools are made of steel hardened and tempered at the tip used to loosen or tighten screws with slotted heads.

They come in various sizes and shapes. ​

Standard/Flat Screw Driver

blade tip is wedge-shaped and resembles a

negative (-) sign.

This is used to drive

screws with a single slot ahead

Philips Screw Driver

has a cross tip resembling a positive (+) sign.

This is used to drive screws with cross slot heads.

Stubby Screw Driver

comes in either Standard or Philips screw driver with short shank or blade and a shorted handle used to

turn screws in tight space where standard

screw driver cannot be used.

Allen Screw Driver/Wrench

could be in the shape of a screw

driver or a wrench.

Its function is to drive screw with hexagonal slot head.

Hammers

These are tools used in driving or pounding

and pulling out nails.

They are made of hard steel, wood, plastic or rubber.

The following are types of hammer:

​​Claw Hammer

​​a hammer with one side of the head split and curved, used for extracting nails.

Mallet(rubber head)

​a kind of hammer, often made of rubber or sometimes wood, that is smaller than a maul or beetle, and usually

has a relatively large head.

Ballpen Hammer

a hammer with a rounded end opposite the face, a type of peening hammer used in metal working.

Pliers

made from metal with insulators in

the handle and are used for cutting,

twisting, bending, holding, and

gripping wires and cables.

Combination Pliers (Lineman’s Pliers).

This is used for gripping, holding, and cutting electrical

wires and cables and even small nails. They are usually

used by linemen in doing heavy tasks.

Side Cutting Pliers

type of pliers is used for cutting fine,

medium and big wires and cables.

Long Nose Pliers

used for cutting and

holding fine wires. This can reach tight

space or small opening where other pliers

cannot reach and also used in making

terminal loops of copper wires.

Wire Stripper

A tool used for

removing insulation of medium

sized wires ranging from gauge #10

to gauge #16.

Electrician’s Knife

used by

linemen to remove insulation of wire

and cables in low and high voltage

transmission lines.

Portable Electric drill

A small drilling machine with a chuck capacity of

¼‖ to 3/8‖. It is used in making holes on

metal sheets and concrete walls.

Hacksaw

tool is used to cut metal

conduit and armored cable.

Convenience outlet

a device that acts as a convenient

source of electrical energy for current consuming

appliances.

It is where the male plug of an appliance is inserted and

usually fastened on the wall or connected in an extension cord.

It maybe single, duplex, triplex or multiplex and could be surface type or flush type.

Male plug

a device inserted to a convenience outlet to conduct electric current.

A flat cord is attached to it on one end and the

other end is connected to a current consuming

instrument or appliance.

Lamp holders

devices that hold and protect the lamp

and are also called as ―Lamp Sockets/Receptacles‖.

These come in many designs and sizes.

They are classified as flush, hanging (weather proof/chain) and surface types.

Switch

a device that connects and

disconnects the flow of electric current in

a circuit.

There are many shapes, designs,

and types and they are classified as

hanging, flush, and surface types.​

Fuse

a circuit protective device that

automatically blows and cut the

current when and over load or short

circuit happens.

​Junction Box

an octagonal shaped electrical material where

the connections or joints of wires are being

done.

It is also where the flush type lamp

holder is attached. This could be made of metal

or plastic (PVC) Polyvinylchloride.

Circuit Breaker

a protective device used to automatically blows and cuts the current when trouble in the circuit such as

short circuit or overload occurs.

​Utility Box

a rectangular shaped metallic or plastic (PVC) material

in which flush type convenience outlet and switch are attached.

Flat Cord

Is a duplex stranded wire used for temporary wiring installation and commonly used in extension cord assembly.

It comes in a roll of 150 meters and with sizes of

gauge # 18 and gauge # 16 awg (American wire

gauge).

Electrical Wire/Conductor

electrical material that could be:

a. Stranded wire which is made of multiple strands

joined together to make a single wire.

b. Solid wire is made of a single strand of copper or

aluminum wire. These are used in wiring installation inside and outside the buildings.

Conduits/Pipes

electrical materials used as the passage of wires for protection and insulation.

These could be rigid metallic, flexible metallic conduit

(FMC), rigid nonmetallic (PVC), and flexible non-metallic or corrugated plastic conduit (CPC).

Clamps

electrical materials used to hold and anchor electrical conduits in its proper position.

Connectors

used to attach metallic or non-metallic conduit to the junction or utility boxes.

MEASURING INSTRUMENTS AND TOOLS

used to measure an assortment of values such as voltage,

current and resistance, wire, length, wire opening sizes,

conduit, and the like. The most common measuring tools

and instruments are:

Push-pull rule

a flexible steel rule used to measure the dimension of an object. It coils into its case when not in use.

Vernier Caliper

Consists of an L- shaped frame with a linear scale along its longer arm and an L-shaped sliding attachment

with a Vernier, used to read directly the dimension of an object.

Micrometer Caliper

used to measure small distances.

Ammeter

used to measure electric current.

Voltmeter

used to measure potential difference or voltage.