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1. Which of the following increases the flexibility of a wire?

Stranding

Nylon

Teflon®

Linking

Question 1 of 20

2. Which of the following is not shown with cable markings?

Voltage rating

Wire size

Prohibited uses

Cable type

Question 2 of 20

3. Which of the following types of cable is suitable for direct burial?

Type NM

Type MC

Type NMC

Type UF

Question 3 of 20

4. It is important to do which of the following when conductors are fed into long runs of conduit?

Put back-tension on the conductors to prevent kinking.

Make sure the wires are straight and do not cross over each other.

Hold tension on the spools so that excess wire does not spill onto the floor.

Fill the conduit with lubricant.

Question 4 of 20

5. In addition to being both flame-retardant and moisture-resistant, what characteristic does Type NMC cable have?

It can be used in multifamily dwellings.

It is fungus- and corrosion-resistant.

It can carry a higher voltage.

It cannot be used in ducts or plenums.

Question 5 of 20

6. Which of the following cables should include a yellow color-coded conductor?

Two-conductor cable

Four-conductor cable

Three-conductor cable

Five-conductor cable

Question 6 of 20

7. The cable that is used for feeders and branch circuits is ________.

Type MC

Type UF

Type MV

Type TC

Question 7 of 20

8. When used as a service-entrance cable, Type SE cable must be installed as specified in ________.

NEC Section 402.3

NEC Section 210.5(C)

NEC Article 230

NEC Section 110.12

Question 8 of 20

9. In two-conductor cable, the high side or hot wire is ________.

red

grey

black

green

Question 9 of 20

10. Size 4/0 wire has a ________.

greater cross-sectional area than size 3/0

smaller cross-sectional area than size 3/0

smaller diameter than size 3/0

greater resistance than size 3/0

Question 10 of 20

11. Type NMS cable is described as ________.

nonmetallic-sheathed cable

metal-clad cable

nonmetallic slit cable

medium voltage cable

Question 11 of 20

12. Which of the following describes Type TC cable?

It consists of two or more insulated conductors twisted together and covered with a nonmetallic jacket.

It has three to five flat conductors separated and enclosed in a flame-retardant assembly.

It can be installed in a U-channel surface metal raceway with one side open.

It comes in sizes No. 12 AWG and larger for copper.

Question 12 of 20

13. The United States uses which of the following standard systems of wire sizes?

American Wire Gauge

Manufacturer's Gauge

Manufacturer's Foundation

International Electrotechnical Commission

Question 13 of 20

14. Where can you find the ampacity of conductors for given conditions?

NEC Chapter 9, Table 8

NEC Table 400.4

NEC Article 340

NEC Tables 310.15(B)(16) through 310.15(B)(19)

Question 14 of 20

15. Which of the following is true of shielding in instrumentation circuits?

It is grounded at every instrument.

It is not grounded.

It is grounded by floating the ground at both ends of the wire.

It is grounded at one end only.

Question 15 of 20

16. A grounding wire may be which of the following colors?

Green

Black

Blue

Yellow

Question 16 of 20

17. Which of the following types of cables may be installed in concealed locations?

Type MC and NM

Type UF and MC

Type UF and NMC

Type NM and NMC

Question 17 of 20

18. According to the standard system of wire sizes in the United States, which ranges from 50 to 1, a larger number represents ________.

stranded wire

solid wire

smaller wire

larger wire

Question 18 of 20

19. Which of the following describes Type FCC cable?

Fine concentric copper

Fixture cable circuit

Fine conductive cable

Flat conductor cable

Question 19 of 20

20. The operating temperature of the circuit is a primary factor in the selection of a ________.

fixture wire

cable

shield drain

channel wire assembly

Question 20 of 20

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