TLE 7- ELECTRICAL WIRING WEEK 1

1. Prepare Electrical Materials and Tools for the Task

2.  COMMON ELECTRICAL TOOLS
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 are needed to perform the job.

3.  Common Electrical Tools needed in the installation of electrical wiring.
 SCREWDRIVERS
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.

4.  Types of Screwdrivers
A. Standard/Flat Screwdriver
The blade tip is
wedge-shaped and
resembles a negative
(-) sign. This is used
to drive screws with a
single slot head

5. B. Philips Screwdriver
 Types of Screwdrivers
This has a cross tip
resembling a positive (+)
sign. This is used to drive
screws with cross slot
heads

6.  Types of Screwdrivers
C. Stubby Screwdriver This comes in either
Standard or Philips
screwdriver with short shank
or blade and a shorted
handle used to turn screws
in tight spaces where a
standard screwdriver cannot
be used.

7.  Types of Screwdrivers
D. Allen Screwdriver/Wrench
This could be in the
shape of a screwdriver
or a wrench. Its
function is to drive
screws with hexagonal
slot heads

8. HAMMERS
 Common Electrical Tools needed in the installation of electrical wiring.
These are tools used in
driving or pounding and
pulling out nails. They are
made of hard steel, wood,
plastic, or rubber

9.  Types of Hammers
A. Claw Hammer
Is a hammer with one
side of the head split
and curved, used for
extracting nails.

10.  Types of Hammers
B. Mallet (Rubber head
Has rubber head and is
usually used to knock
wooden pieces together,
or to drive dowels or
chisels.

11.  Types of Hammers
C. Ball-peen Hammer
It is also known as
machinist’s
hammer used in
metalworking.

12.  PLIERS
 Common Electrical Tools needed in the installation of electrical wiring.
These tools are made
from metal with insulators
in the handle and are
used for cutting, twisting,
bending, holding, and
gripping wires and cables.

13.  Types of Fliers
A. 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.

14.  Types of Fliers
B. Side Cutting Pliers
This type of pliers is used for cutting fine,
medium, and big wires and cables.

15. C. Long Nose Pliers
 Types of Fliers
This is used for cutting and holding fine wires. This
can reach tight spaces or small openings where
other pliers cannot reach.

16.  Common Electrical Tools needed in the installation of electrical wiring.
 WIRE STRIPPER
This is a tool used for
removing insulation of
medium-sized wires
ranging from gauge #10
to gauge #16

17.  Common Electrical Tools needed in the installation of electrical wiring.
 Electrician’s Knife
This is used by linemen to
remove insulation of wire
and cables in low and
high voltage transmission
lines.

18.  Common Electrical Tools needed in the installation of electrical wiring.
 Portable Electric drill
A small drilling machine
with a chuck capacity of
¼” to ½”. It is used in
making holes on metal
sheets and concrete
walls.

19.  Hacksaw
 Common Electrical Tools needed in the installation of electrical wiring.
This tool is used to
cut metal conduit
and armored cable

20.  Convenience outlet
 Materials:
Is 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 is usually fastened
on the wall or connected in an extension cord. It may be
single, duplex, triplex, or multiplex and could be surface type
or flush type.

21. Common Types of Convenience Outlet
a.Surface type –This type of outlet is
typically mounted on the surface
portion of the wall
b. Flush type -This type of outlet is
typically buried in concrete and is attach
to the utility box

22.  Male plug
 Materials:
Is a device inserted to a
convenience outlet to
allow the flow of electric
current. This is use in
making extension wires.

23.  Materials:
 Lamp holders
These are devices that hold the
lamp and are also called Lamp
Sockets or Ceiling Receptacles.
These come in many designs
and sizes. They are classified as
flush, hanging (weather
proof/chain), and surface types

24.  Materials:
 Switch
Is 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.

25.  Materials:
 Fuse
Is a circuit protective device that automatically
blows and cuts the current when overload or
short circuit happens.

26.  Materials:
 Circuit Breaker
Is a protective device that automatically trips and cut
the current when trouble in the circuit such as short
circuit or overload occurs. It comes in 2 poles, 3 poles
and 4 poles.

27.  Materials:
 Junction Box
Is an octagonal shaped electrical material where
connections, joints or termination 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.

28.  Materials:
 Utility Box
Is a rectangular shaped metallic or plastic (PVC)
material in which flush type convenience outlet and
switch are attached

29.  Materials:
 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 sizes of gauge # 18,
gauge # 16 AWG and gauge # 14 AWG (American wire
gauge).

30.  Materials:
 Electrical Wire or Conductor
Is the means in which electrical current will flow. It is
usually made of copper or aluminum with or without
outside insulation.

31. Types of Electrical wire or conductor
a.Stranded wire -Is made of multiple
strands of copper or aluminum 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.

32.  Materials:
 Conduits/Pipes
Are tubes that are used not only to protect
wires but also to route electrical wiring
throughout a building.

33. a. Rigid Steel Conduit (RSC)-Is a thick-walled threaded tubing, usually made of hot-
dipped galvanized inside and outside and is threaded at both ends.
b. Flexible Non-metallic conduit or corrugated plastic conduit (CPC) -Is flexible
corrugated plastic tubing that is moisture-resistant and flame retardant. It is easy to
bend and installs with snap-lock or glued plastic fittings.
c. Rigid Non-metallic conduit (PVC) -Is similar to plastic plumbing pipe and installs
with fittings. It can be bent after being heated using portable heat gun.
Common Types of Conduits/Pipes

34. d. Electrical Metallic Tubing (EMT) -Are made of electro-galvanized metal. It is
typically thin and lightweight. EMT is rigid but can be bent with a simple tool called a
conduit bender.
e. Flexible Metal Conduit (FMC) -Has a spiral construction that makes it flexible so
it can snake through walls and other structures.
f. Liquid tight Flexible Metal Conduit (LFMC) -Is a special type of flexible metal
conduit that has a plastic coating and is used with sealed fittings to make it water
tight
Common Types of Conduits/Pipes

35.  Materials:
 Clamps
Electrical materials are used to hold and
anchor electrical conduits to its proper
position

36.  Materials:
 Connectors
Are used to attach metallic or non-metallic
conduit to the junction or Utility boxes

37. COMMON ELECTRICAL MATERIALS PURPOSE
Electrical materials are developed and constructed for a
special purpose, such as:
1.control the flow of current in an electrical circuit
2. carry electrical current from the source to the load or
current consuming apparatus;
3. hold and secure wires to its fixtures inside and outside
houses and buildings.
4. protect houses, buildings, appliances, and instruments
from destruction and damage.

38. COMMON ELECTRICAL WIRE SPLICES AND JOINTS

39. COMMON ELECTRICAL WIRE SPLICES AND JOINTS

40. COMMON ELECTRICAL WIRE SPLICES AND JOINTS

42. EXTENSION CORD
An extension cord is a span of
flexible electrical power cable
with a plug on one end and
multiple sockets on the other
end. It comes in several varieties
to suit the needs of the user.
One of the most important
considerations is the power
handling capacity to make it safe
and functional.

43. Electrical gadgets are product of modern
technology to make our life better. The number
of electrical gadgets available at home and in
offices may exceed the existing convenience
outlet installed in every room. The best remedy
to address the insufficiency of available outlet is
to use an extension cord especially if the
electrical gadgets need to operate at the same
time.
REMINDER: Be careful in buying an extension cord. You have to look for the Department of Trade and Industry
(DTI) markings. The Product Standard (PS) or Import Commodity Clearance (ICC) markings on it signify that the
product passed the DTI standard for safety and quality

44. Tools needed in Creating an Extension Cord
• Standard/Flat screwdrivers
• Phillip Screwdriver
• Long Nose Fliers
• Side- Cutting Fliers
• Electrician’s Knife/Pocket knife
• Continuity Tester or Multi-tester
Materials needed in Creating an Extension Cord
• Convenience outlet
• Flat cord #18 AWG
• Male Plug
• Eyelet Wire Connectors

45. Steps in Making an Extension cord
1. Prepare the plan.
2. Gather all necessary materials and tools needed.
3. Separate one end of electrical wire to about 10 cm. each.
4. Peel off the skin or insulator of the wire ends by 2 cm.
5. Loosen the screw of the male plug. Open cover of male plug with a
screwdriver.
6. Insert the wire into the male plug .Twist both ends of the wire to keep the
wires making contact with each other. Tighten the screws down to hold the
wires securely.
7. Put back the cover of the plug so the wire will not be exposed and cause
electric shock.
8. Repeat steps 1 to 4 on the other end of the electrical wire, this time with
the female plug. Once the steps have been done you now have a complete
extension cord.