LESSON 1

Question 1

Made up of Single Electrical Conductor

Answer 1

Wire

Question 2

Group or bundle of multiple wires inside a common sheathing

Answer 2

Cable

Question 3

The cable contains two insulated wires and a ground wire; individual wire is 14-gauge.

Answer 3

14-2G

Question 4

The cable contains three insulated wires and a ground wire; individual wire is 14-gauge.

Answer 4

14-3G

Question 5

The cable contains two insulated wires with a ground wire; individual wires are 12-gauge.

Answer 5

12-2w/G

Question 6

The cable contains three insulated wires with a ground wire; individual wires are 12-gauge.

Answer 6

12-3w/G

Question 7

Cable is rated for a maximum of 600 volts; commonly used NM cable for home wiring.

Answer 7

600V

Question 8

NM stands for

Answer 8

Non-metallic

Question 9

A non-metallic sheathed cable of type-B. Commonly used cable for wiring appliances and devices in home.

Answer 9

Type NM-B

Question 10

What does THHN mean

Answer 10

Thermoplastic insulation with a Highly heat-resistant, Nylon-coated

Question 11

What does THWN stands for?

Answer 11

Thermoplastic insulation, Heat-resistant, Wet and Nylon-coated

Question 12

What does THW stands for?

Answer 12

Thermoplastic insulation,Heat-resistant, Wet

Question 13

What does XHHN stands for?

Answer 13

Synthetic polymer,Highly heat-resistant,Nylon-coated

Question 14

T stands for;

Answer 14

Thermoplastic insulation, a fire-resistant material

Question 15

H stands for:

Answer 15

Heat-resistant; able to withstand temperatures up to 167 F.

Question 16

HH stands for;

Answer 16

Highly heat-resistant; able to withstand temperatures up to 194 F.

Question 17

W stands for;

Answer 17

“Wet,” or approved for damp and wet locations; this wire is also suitable for dry locations

Question 18

X stands for;

Answer 18

Insulation made of a synthetic polymer that is flame-retardant

Question 19

N stands for;

Answer 19

Nylon-coated for resistance to oil and gasoline

Question 20

What are the Residential Wiring Cables;

Answer 20

Service Drop Cable
Main Feeder Wires
Panel Feed Wires
Non-Metallic Sheathed Wires
Single Conductor Wire

Question 21

It is the cable between the utility pole and the consumer’s premises or building, it is also an overhead electrical line from the pole to the service weatherhead of a house.

Answer 21

Service Drop Cable

Question 22

Types of Service Drop Cable

Answer 22

Duplex Cable
Triplex Cable
Quadruplex Cable

Question 23

It is a two-core conductor; an insulated conductorfor phase line and a bare conductor for neutral line. It is used for supplying a single-phase power to the building

Answer 23

Duplex Cable

Question 24

It is a three-core conductor. It has two insulated conductors for phase line and a bare conductor for neutral line.

Answer 24

Triplex Cable

Question 25

It is a quad or four core conductors; three of them are insulated conductors for phase lines and a bare conductor for neutral line. It is used for supplying a 3-phase power supply from the utility pole to the building

Answer 25

Quadruplex Cable

Question 26

It supplies the power from the service weatherhead to the building.

Answer 26

Main Feeder Wires

Question 27

It supplies power to the main distribution junction box.

Answer 27

Panel Feed Wires

Question 28

It is used for in-house wiring. It may consist of 2 or more than 2 insulated conductors with an insulated or bare ground conductor.

Answer 28

Non-Metallic Sheathed Wires

Question 29

Most popular choice for electrical layout inside a home. It is available in multiple gauges, color (for phase, neutral and ground identification) and solid or stranded conductors.

Answer 29

Single Conductor Wire

Question 30

It provides better connections

Answer 30

Single Solid Wire

Question 31

It is easier to route through conduits.

Answer 31

Single Stranded Wires