Department of Education
ELECTRICAL INSTALLATION
AND MAINTENANCE (EIM) 10
Module 1
GERRY V. DOMALANTA
Writer
JOAQUIN O. BASIJAN
ELECTRICAL INSTALLATION AND
MAINTENANCE
Validator
GRADE 10
JOSE RUBY N. SALAN
Layout Artist
Schools Division Office – Muntinlupa City
Student Center for Life Skills Bldg., Centennial Ave., Brgy. Tunasan, Muntinlupa City
(02) 8805-9935 / (02) 8805-9940
MODULE 1: Install Electrical Lighting System on Auxiliary Outlets and
Lighting Fixtures Using Metallic Conduit.
LESSON 1: Wires and Cables
This module was designed and written with you in mind. It is here
to help you install electrical lighting system on auxiliary outlets and
lighting fixtures. The scope of this module permits it to be used in many
different learning situations. The language used recognizes the diverse
vocabulary level of students.
This module comprises the installation of electrical lighting using
different types of wiring method and auxiliary outlets. Among the topics
that you must understand are the following: wires and cables, electrical
symbols, wiring diagrams, one line diagram, schematic diagram, tools,
equipment, and PPE needed and installation of lighting fixtures.
After going through this lesson, you are expected to:
1. Define wires and cables
2. Identify the different types of wires and cables
3. Enumerate the conversion table of common wires used in house
wiring and building wiring installation
4. Determine the maximum ampacity of a conductor based on the
table of allowable ampacities of insulated conductor.
1
Pretest:
Directions: Choose the letter of the best answer. Use a separate
sheet of paper for your answers.
1. This is an ordinary wire use in an interior house wiring at circuit voltage up to
600 Volts. This is suitable for the type of service where the conductor
temperature does not exceed 60˚C in dry or wet location.
a. Moisture Resistant Thermoplastic Wire (type THW).
b. Thermoplastic wire (type TW)
c. Control cable (braided type)
d. Flat Cord (type SPT)
2. This consists of two conductors and a ground used for wiring air-conditioning
unit.
a. Copper or aluminum conductor
b. Non-metallic sheathed cable (type NM)
c. Thermoplastic covered fixture wire (type TF)
d. Air Conditioning Unit Safety Cord (type SPT).
3. These are use in an interior house wiring at circuit voltage up to 600 Volts.
Suitable for the type of service where the conductor temperature does not
exceed 75˚C in dry or wet location
a. Moisture Resistant Thermoplastic Wire (type THW).
b. Thermoplastic wire (type TW)
c. Control cable (braided type)
d. Flat Cord (type SPT)
4. This has 2 to 4 stranded conductors used for portable cords in electrical
equipment.
a. Thermoplastic Fixture Wire (type TF).
b. Royal cord
c. Thermoplastic Fixture with Nylon Wire (type TFN).
d. Flat Cord (type SPT)
5. This can be solid or stranded used for wiring lighting fixtures and as terminal
wires.
a. Thermoplastic Fixture Wire (type TF).
b. Royal cord
c. Thermoplastic Fixture with Nylon Wire (type TFN).
d. Flat Cord (type SPT)
2
6. It is flame retardant and resistant to heat, gas, and oil.
a. Thermoplastic Fixture Wire (type TF).
b. Royal cord
c. Thermoplastic Fixture with Nylon Wire (type TFN).
d. Flat Cord (type SPT)
7. What is the equivalent diameter size of number 10 AWG wire in millimeter
(mm)?
a. 2.05mm
b. 2.59mm
c. 3.26mm
d. 3.11mm
8. What is the equivalent diameter size of number 8 AWG wire in millimeter
(mm)?
a. 2.05mm
b. 2.59mm
c. 3.26mm
d. 3.11mm
9. This wire cannot be used in wet locations.
a. TW
b. THW
c. THHN
d. THWN
10. This is the maximum operating temperature of a THHN wire.
a. 60°C
b. 75°C
c. 85°C
d. 90°C
11. What is the standard size of wire used in lighting circuit?
a. #14AWG
b. #12AWG
c. #10AWG
d. #8AWG
12. The standard size of wire for air-conditioning unit is ___________.
a. a. #14AWG
b. #12AWG
c. #10AWG
d. #8AWG
13. What is the ampacity of #8 AWG, TW wire?
a. 20 A
b. 30 A
c. 40 A
d. 45 A
14. What is the size of a TW copper wire with 20Ampere ampacity?
a. 2.0mm²
b. 3.5mm²
c. 5.5mm²
d. 8.0mm²
15. What is the standard size of wire usually used in service entrance for single
family dwelling?
a. 2.0mm²
b. 3.5mm²
c. 5.5mm²
d. 8.0mm²
3
This part is a review of some competencies taken up last school year.
Direction: Identify the following tools and instruments
IMAGES OF TOOLS &
INSTRUMENTS
NAME OF TOOLS & INSTRUMENTS
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
4
In this lesson, you will be able to learn the different types of wires and cables, the
standard size of wires for house wiring or building wiring installation as well as the
allowable ampacities of a conductor to prevent possible trouble in wiring installation.
WORD SEARCH PUZZLE
Directions: Answer this word search by highlighting the word based on the given
words on the right box
Given words:
CABLE
WIRE
AMPACITY
STRANDED
WIRE GAUGE
SOLID
ALUMINUM
THERMOPLASTIC
COPPER
CONDUCTOR
GUESS WHAT
Directions: Arrange the letter to form a word. Write the word inside the
square.
1. IREW
2. DOLSI
3. TRADESDN
4. LABCE
5. CITYMAPA
5
INFORMATION SHEET 2.1
Wires and Cables
Wires are those conductors 3.26mm or No.8AWG and smaller in sizes.
Cables on the other hand, are those which are larger than the wires. So, wires are
small cable while cables are big wires. Wires and cables are either stranded or solid.
Stranded wire- contains a group of wires twisted to form a metallic string.
Solid wire- consists only of single conductor.
DIFFERENT TYPES OF ELECTRIC WIRES AND CABLES
DESCRIPTION AND
USAGE
SIZE RANGE
Copper or Aluminum
Bare Conductors. These
are bare wires used for
overhead transmission
lines and for ground
wires.
1.60mm500mm2
Stranded and
Solid
Thermoplastic
Wires (type TW).
This is an ordinary wire
use in an interior house
wiring at circuit voltage
up to 600 Volts. Suitable
for the type of service
where the conductor
temperature
Copper
1.60mm3.2mm solid
2.0mm² 500mm²
Stranded
6
PICTURE
does not exceed 60˚C in
dry or wet location.
Moisture Resistant
Thermoplastic Wires
(type THW).
These are use in an
interior house wiring at
circuit voltage up to 600
Volts. Suitable for the
type of service where the
conductor temperature
does not exceed 75˚C in
dry or wet location
High Heat Resistant
Thermoplastic Nylon
coated wire (THHN)
Moisture and Heat
resistant Thermoplastic
Nylon coated wire
(THWN).
Wires are coded
THHN/THWN-2 which is
general purpose 600
Volts that can be used in
power, lighting and
control wiring. Suitable
for the type of service
where the conductor
temperature does not
exceed 90˚C in dry
location or wet location.
THHN cannot be used in
wet location.
Thermoplastic Fixture
Wire (type TF).
This can be solid or
stranded used for wiring
lighting fixtures and as
terminal wires.
Thermoplastic Fixture
with Nylon
Wire (type TFN).
This can be solid or
stranded used for wiring
lighting fixtures and as
terminal wires. It is flame
retardant and resistant to
heat, gas and oil.
Copper
1.60mm3.2mm solid
2.0mm² 500mm²
Stranded
Copper
1.60mm3.2mm solid
2.0mm² 500mm²
Stranded
Aluminum
50mm² –
400mm²
stranded only
1.0mm &
1.2mm solid
(1 or 2 wire)
0.75mm²
&1.25mm²
stranded (1
or 2 wire)
1.0mm &
1.2mm solid
(1 or 2 wire)
0.75mm²
&1.25mm²
stranded (1
or 2 wire)
7
Non-metallic
Sheathed Cable
(type NM). This has
2 or 3 conductors
inside the cable
used for exposed or
concealed installation
in buildings.
Flat Cord (type
SPT). This has two
sets of stranded
conductors
separated by
insulators. It is
usually used for
portable electrical
equipment and for
extension wiring of a
single bulb.
1.60mm2.60mm
Solid
2.0mm² –
5.5mm²
stranded
0.75mm² –
3.5mm²
stranded
Air Conditioning
Unit Safety Cord
(type SPT). This
consists of two
conductors and
a ground used
for wiring airconditioning
unit.
Underground
Feeder and Branch
Circuit Cable
(type UF). This is a
jacketed cable, used
for wiring installation
direct burial.
1.60mm2.00mm
Intercom Cable.
This shielded or
unshielded cable
has 3 conductors
to 100 pairs, used
for wiring interior
communications,
system and sound
distribution jacketed.
0.65mm
1.60mm11.68mm
8
Telephone Cable
(type CCP). This
is installed aerial
and duct type for
telephone wiring
with color coded
conductor insulators.
Submersible
Pump Cable. This
is thermoplastic
insulated cable
used for wiring
submersible pumps
of deep well water
systems.
Armored Cable
(type ACT),(BX).
This has 2 or 3
conductors used for
wiring installation in
buildings.
Royal Cord.
This has 2 to 4
conductors, stranded
and used for portable
cords in electrical
equipment.
0.40mm0.91mm
.60mm11.68mm
1.60mm6.54mm
.65mm5.19mm
9
CONVERSION TABLE OF CONDUCTORS
American Wire Gauge (AWG) TO Wire Diameter Millimeter (mm)
Wire Gauge #
AWG
#40
#39
#38
#37
#36
#35
#34
#33
#32
#31
#30
#29
#28
#27
#26
#25
#24
#23
#22
#21
#20
#19
#18
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
AWG
Diameter in
Millimeter
(mm)
0.078mm
0.088mm
0.101mm
0.114mm
0.127mm
0.142mm
0.160mm
0.180mm
0.203mm
0.226mm
0.254mm
0.287mm
0.320mm
0.360mm
0.403mm
0.454mm
0.510mm
0.574mm
0.652mm
0.723mm
0.812mm
0.911mm
1.024mm
Wire Gauge #
AWG
#17 AWG
#16 AWG
#15 AWG
#14 AWG
#13 AWG
#12 AWG
#11 AWG
#10 AWG
#9 AWG
#8 AWG
#7 AWG
#6 AWG
#5 AWG
#4 AWG
#3 AWG
#2 AWG
#1 AWG
0
00
000
0000
00000
000000
Diameter in
Millimeter
(mm)
1.150mm
1.291mm
1.450mm
1.628mm
1.829mm
2.052mm
2.300mm
2.590mm
2.910mm
3.263mm
3.674mm
4.115mm
4.621mm
5.189mm
5.827mm
6.543mm
7.358mm
8.251mm
9.265mm
10.404mm
11.680mm
13.120mm
14.733mm
Actual
Commercial
size
Note: If you want to know the equivalent size of wire using the conversion table, the #
8 AWG is equal to 3.263mm or 3.2mm the actual commercial size, the # 10 AWG is
equal to 2.590mm or 2.6mm the actual commercial size; the #12 AWG is equal to
2.052 mm or 2.00mm; and the # 14 AWG is equal to 1.628mm or 1.6mm. Generally,
wires and cables available in the market are even numbers in American Wire Gauge.
Ampacity is also called current-carrying capacity, this is the maximum current, in
amperes, that a conductor can carry continuously under the conditions of use without
exceeding its temperature rating.
In Philippine Electrical Code (PEC), Conductors size and rating shall have sufficient
ampacity to carry the load. They shall have adequate mechanical strength and shall
not be less than the rating of the branch circuit and not less than the maximum load
to be served.
10
1.6mm
2.0mm
2.6mm
3.2mm
The standard size of wire for electric load
Size of wire to
be used in AWG.
mm² and mm
Electric load/appliance
Ampacity
# 14 AWG
2.0 mm²
1.6 mm
15 Ampere
# 12 AWG
3.5 mm²
2.0 mm
20 Ampere
# 10 AWG
5.5 mm²
2.6 mm
30 Ampere
# 8 AWG
8.0 mm²
3.2 mm
40 Ampere
Lighting circuit such as bulb, compact
fluorescent lamp, fluorescent lamp, etc.
Power circuit / Convenience outlet for
television, radio, electric fan, etc.
Special purpose outlet for Motorized and
heating appliances such air-conditioning
and electric oven/stove.
For service entrance conductor
In power circuit where load is limited to small appliances such as television,
computer unit, radio, electric fan, etc. the standard size of wire to be used is # 12 AWG
11
(3.5mm² or 2.0mm) and current does not exceed 20 ampere. For lighting circuit where
load is incandescent bulb and fluorescent bulb the standard size of wire should be #14
AWG (2.0mm² or 1.6mm) where current should not exceed 15 amperes. For heating
appliances such as electric stove and motorized load such as freezer, refrigerator,
washing machine, and air-conditioning unit the size of wire shall be #10 AWG ( 5.5mm²
or 2.6mm), however, heating appliance and motorized load should be in separate
circuit. Lastly, the standard size of wire for service entrance is #8 AWG ( 8.0mm² or
3.2mm ) with 40 ampere for TW and 45 ampere for THW/THWN.
Conductor Material
One of the factors that determines the resistivity of wire is the material from
which the wire is made. The table indicates that a copper conductor is permitted to
carry more current than an aluminum conductor of the same size and insulation type.
An 8.0 mm2 copper conductor with Type TW insulation is rated to carry a maximum
of 40 amperes. An 8.0 mm2 aluminum conductor with Type TW insulation is rated to
carry only 30 amperes.
Another factor that determines the amount of current a conductor is permitted
to carry is the type of insulation used. This is because different types of insulation can
withstand more heat than others. The wire table is divided into columns that list the
trade name: identification letters, maximum operating temperature, whether the
insulation can be used in a wet, damp, or dry location, material, thickness, and outer
covering. A good thing to remember is that insulation materials that contain the letter
W, such as RHW, THW, THWN, and so on may be used in wet locations. A conductor
which has an insulation material that contain dual H(HH) letters can withstand higher
temperature.
In the Table below, the first column on the left side is the size of wire in mm²
from 2.0 down to 500. On the last column (right side) is also sizes of wire in AWG
from #14 AWG down to 1000. The 2nd, 3rd 4th and 5th column from left side is the
ampacity of copper wire, the unit is Ampere. The 6th, 7th , 8th, and 9th column is also
the ampacity of Aluminum wire.
12
Allowable Ampacities of Insulated Conductors rated 0-2000 volts,
60 ºC to 90 ºC
Not more than three conductors in raceways or cable or earth
(directly buried), based on ambient temperature of 30ºC
Size
Temperature Rating of Conductor
85 ºC 90 ºC
60 ºC
75 ºC
Types
+TW,
+UF
mm2
Types
+FEPW,
+RH,
+RHW,
+THW,
+THWN,
+XHHN,
+USE,
Types
V
Size
Types
TBS, SIS,
+FEP,
+FEPB,
+RHH,
+THHN,
+THHW,
60 ºC
Types
+TW,
+UF
+XHHW
+ZW
75 ºC
Types
+FEPW,
+RH,
+RHW,
+THW,
+THWN,
+XHHN,
+USE,
85 ºC
Types
V
90 ºC
Types
TBS,
SIS,
+FEP,
+FEPB,
+RHH,
+THHN,
+THHW,
AWG
or
kcmil
+ZW
+XHHW
Aluminum or Copper-clad Aluminum
Copper
2.0
3.5
15
20
15
20
25
30
25
30
…
15
…
15
…
5.5
30
8.0
14
22
30
38
50
60
80
100
125
150
200
250
325
400
500
40
55
70
90
100
120
135
160
185
210
240
280
315
370
405
485
30
45
65
85
110
125
145
160
195
220
255
280
330
375
435
485
540
40
50
70
90
115
40
50
70
90
115
130
150
170
205
225
265
295
355
400
470
515
580
25
30
40
55
70
80
150
170
205
225
170
190
225
260
295
330
370
25
40
50
65
85
95
115
125
150
170
200
230
270
305
355
395
440
30
40
55
70
90
100
120
135
160
180
210
240
290
330
380
420
475
130
150
170
205
225
265
295
355
400
470
515
580
25
…
25
14
12
30
40
10
8
6
4
2
1
0
00
000
0000
250
300
400
500
600
800
1000
55
70
95
100
120
135
160
180
210
240
290
330
380
420
475
Size of wire
in AWG
Size of wire
in mm²
13
How to read the table above in determining the ampacity of wire.
Example:
Problem 1: What is the ampacity of 5.5mm² copper wire, type THW?
Answer: 30 Ampere
1. Look for the column of the types of wire (FEPW, RH, RHW, THW, THWN,
XHHN, USE, ZW) such as the circled above (left side)
2. Locate the size of wire on the first column, in this case 5.5 mm2 is encircled
3. Look for the number/answer where the types of wire (THW) and the size of
wire (5.5) intersect, thus, the answer is 30 Ampere.
Problem 2: What is the ampacity of 6 AWG aluminum wire, type THHN?
Answer: 55 Ampere
1. Look for the column of the types of wire (TBS, SIS, FEP, FEPB, RHH, THHN,
THHW, XHHW) such as the circled above (right side)
2. Locate the size of wire on the first column, in this case # 6 AWG is encircled
3. Look for the number/answer where the types of wire (THHN) and the size of
wire (6) intersect, thus, the answer is 55 Ampere.
If the size of wire is unknown and the given is the type of wire and ampacity, look at
the big arrow.
Example:
Given:
Type of wire = THHN, 90 ⁰C
Ampacity = 90 Ampere
Size of wire = ?
The answer is 22mm²
TRY THIS!
1. What is the ampacity of 38mm² copper wire, type THW?
______________
2. What is the ampacity of #10 AWG aluminum wire, type THHN?
______________
3. What is the ampacity of 100mm² copper wire, type THWN?
_____________
4. What is the size of wire for THWN 75 ⁰C, 65 Ampere?
______________
5. What is the size of wire for THHN 90 ⁰C, 130 Ampere?
______________
14
Activities for Mastery:
A. Wires and Cables Identification:
Directions: Identify the following images of wires and cables
IMAGES OF WIRE
NAME OF WIRE
1
2.
3
4.
5
15
B. Based on the Table 3.10.1.16, Determine the ampacity of the following copper
conductor with type THHN, THW with ambient temperature of 75 ⁰C.
6. 2.0mm
= ______Ampere
7. 3.5mm
=______Ampere
8. 5.5mm
=______Ampere
9. 8.0mm
=______Ampere
10. 14mm
=______Ampere
C. Based on the Table 3.10.1.16, Determine the ampacity of the following
Aluminum conductor with type THHN, THHW, RHH with ambient temperature
of 90 ⁰C.
11. 12 AWG
= ______Ampere
12. 8 AWG
=______Ampere
13. 6 AWG
=______Ampere
14. 4 AWG
=______Ampere
15. 2 AWG
=______Ampere
D. Based on the Table 3.10.1.16, Determine the size of wire in mm or AWG of
the following conductor.
16. Copper, 20 Ampere, THWN, 75 ⁰C
= _____
17. Aluminum, 70 Ampere, THHN, 90 ⁰C
= _____
18. Copper, 100 Ampere, TW, 60 ⁰C
= _____
19. Aluminum, 70 Ampere, TW, 60 ⁰C
= _____
20. Copper, 130 Ampere, THHN, 90 ⁰C
=______
Directions: Express what you have learned in this lesson by
completing the sentences below.
1. I learned how to determine the ampacity of the conductor by _____________
______________________________________________________________
______________________________________________________________
16
2. If ampacity is given, I also learned to look for the required size of wire by ____
______________________________________________________________
______________________________________________________________
3. I knew the equivalent size of the common conductor used in house wiring.
a. 14 AWG = _______mm² = ________mm
b. 12 AWG = _______mm² = ________mm
c. 10 AWG = _______mm² = ________mm
d. 8 AWG
= _______mm² = ________mm
Directions: Answer the following questions.
A. What is the standard size of wire for the following?
1. Electric Heating load = _________
CHOICES:
2. Lighting circuit
= _________
3. Motorized load
= _________
4. Power circuit
= _________
#12 AWG
5. Service entrance
= _________
#14 AWG
#8 AWG
#10 AWG
B. What is the difference between wires and cables?
______________________________________________________________
______________________________________________________________
C. What is the difference between solid wire and stranded wire?
______________________________________________________________
______________________________________________________________
D. What is the difference between TW and THW?
______________________________________________________________
______________________________________________________________
E. What is meant by Ampacity?
______________________________________________________________
______________________________________________________________
17
Directions: Give at least 3 answers of the following skills that you can do.
SKILLS
I can determine the size of wire
based on ampacity.
YOUR ANSWER
Ampacity
Size of wire
1.
Ex.
Ampacity
15 A
size of wire
2.0mm²
2.
3.
I knew the different types of wire
and its acronym.
1.
2.
Ex.
TW = Moisture Resistant
3.
Thermoplastic
I can give the standard size of
Types of load
wire for the types of load or circuit.
1.
Ex.
Types of load
Size of wire 2.
Lighting circuit (bulb) 14 AWG
3.
I can convert the size of wire in
AWG to mm or mm²
Ex.
AWG
mm²
14 AWG = 2.0mm²
AWG
1.
2.
=
mm
1.6mm
3.
18
mm²
Size of wire
mm
POST TEST
Directions: Choose the letter of the best answer. Use a separate
sheet of paper for your answers.
1. What is the ampacity of #8 AWG, TW wire?
a. 20 A
b. 30 A
c. 40 A
d. 45 A
2. What is the size of a TW copper wire with 20Ampere ampacity?
a. 2.0mm²
b. 3.5mm²
c. 5.5mm²
d. 8.0mm²
3. What is the standard size of wire usually used in service entrance for single
family dwelling?
a. 2.0mm²
b. 3.5mm²
c. 5.5mm²
d. 8.0mm²
4. These are use in an interior house wiring at circuit voltage up to 600 Volts.
Suitable for the type of service where the conductor temperature does not
exceed 75˚C in dry or wet location
a. Moisture Resistant Thermoplastic Wire (type THW).
b. Thermoplastic wire (type TW)
c. Control cable (braided type)
d. Flat Cord (type SPT)
5. This has 2 to 4 stranded conductors used for portable cords in electrical
equipment.
a. Thermoplastic Fixture Wire (type TF).
b. Royal cord
c. Thermoplastic Fixture with Nylon Wire (type TFN).
d. Flat Cord (type SPT)
6. This can be solid or stranded used for wiring lighting fixtures and as terminal
wires.
a. Thermoplastic Fixture Wire (type TF).
b. Royal cord
c. Thermoplastic Fixture with Nylon Wire (type TFN).
d. Flat Cord (type SPT)
7. It is flame retardant and resistant to heat, gas, and oil.
a. Thermoplastic Fixture Wire (type TF).
b. Royal cord
c. Thermoplastic Fixture with Nylon Wire (type TFN).
d. Flat Cord (type SPT)
19
8. This wire cannot be used in wet locations.
a. TW
b. THW
c. THHN
d. THWN
9. This is the maximum operating temperature of a THHN wire.
a. 60°C
b. 75°C
c. 85°C
d. 90°C
10. This is an ordinary wire use in an interior house wiring at circuit voltage up to
600 Volts. This is suitable for the type of service where the conductor
temperature does not exceed 60˚C in dry or wet location.
a. Moisture Resistant Thermoplastic Wire (type THW).
b. Thermoplastic wire (type TW)
c. Control cable (braided type)
d. Flat Cord (type SPT)
11. What is the standard size of wire used in lighting circuit?
a. #14AWG
b. #12AWG
c. #10AWG
d. #8AWG
12. The standard size of wire for air-conditioning unit is ___________.
a. a. #14AWG
b. #12AWG
c. #10AWG
d. #8AWG
13. This consists of two conductors and a ground used for wiring air-conditioning
unit.
a. Copper or aluminum conductor
b. Non-metallic sheathed cable (type NM)
c. Thermoplastic covered fixture wire (type TF)
d. Air Conditioning Unit Safety Cord (type SPT).
14. What is the equivalent diameter size of number 10 AWG wire in millimeter
(mm)?
a. 2.05mm
b. 2.59mm
c. 3.26mm
d. 3.11mm
15. What is the equivalent diameter size of number 8 AWG wire in millimeter
(mm)?
a. 2.05mm
b. 2.59mm
c. 3.26mm
d. 3.11mm
20
1. If you have access to the internet, please search for additional
information about the types of wires. Just type the types of wires
and cables in google search. List the types of wire that you can find
on the internet aside from the ones enumerated on our lesson.
REFERENCES:
Department of Education, Competency Based Learning Material (CBLM)
Building Wiring Installation Y4
Published 2010
Department of Education
Technology & Livelihood Education
Electrical Installation and Maintenance 10
Learner’s Material
First Edition, 2014
https://www.vwcable.com/thw-90-cable-12awg-8awg-tw-wires-cables/
https://www.distributorwire.com/tinned-copper-vs-bare-copper/
https://www.google.com/search?q=thwn&source=lnms&tbm=isch&sa=X&ved=2ahU
KEwj8723rJDqAhUL7WEKHWoCD1sQ_AUoAXoECA0QAw&biw=1366&bih=657#imgrc=
KHLMLIqMu27UvM
https://www.carousell.ph/p/tf-wire-245507325/
http://www.lightbulbplanet.com/encore-18-awg-tfn-solid-copper-wire-500-ft-spool-inred
https://www.servicewire.com/Products/UFB.htm
21
ANSWER KEY
PRE TEST
1. B
2. D
3. A
4. B
5. A
6. C
7. B
8. C
9. C
10. D
11. A
12. C
13. C
14. B
15. D
GUESS WHAT
TRY THIS:
What’s more
What’s more:
C.
11. 25
12. 40
13. 55
14. 70
15. 95
A.
1. copper and aluminum bare
conductor
2. Air conditioning unit safety cord
3. underground feeder and branch
circuit cable
4. royal cord
5. armored cable
1.
2.
3.
4.
5.
125 Ampere
30 Ampere
220 Ampere
14mm²
38mm²
1.
2.
3.
4.
5.
NAME OF TOOLS AND
INSTRUMENTS
WIRE
SOLID
STRANDED
CABLE
AMPACITY
D
16. 3.5mm²
17. 4 AWG
18. 38mm²
19. 2 AWG
20.
1. Digital tester
2. Kilowatt-hour meter
3. Megger
4. Micrometer
5. Wire gauge
6. Pull push rule
7. Phase sequence tester
8. Clamp on ammeter
9. Analog mulitimeter
10. Caliper
B.
6. 15
7. 20
8. 30
9. 45
10. 65
22
WORD SEARCH PUZZLE
Given words:
23
CABLE
WIRE
AMPACITY
STRANDED
WIRE GAUGE
SOLID
ALUMINUM
THERMOPLASTIC
COPPER
CONDUCTOR