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

Yellow

Green

Black

Blue

Question 1 of 20

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

Type NMC

Type UF

Type MC

Type NM

Question 2 of 20

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

It can carry a higher voltage.

It cannot be used in ducts or plenums.

It can be used in multifamily dwellings.

It is fungus- and corrosion-resistant.

Question 3 of 20

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

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

NEC Article 340

NEC Table 400.4

NEC Chapter 9, Table 8

Question 4 of 20

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

NEC Section 210.5(C)

NEC Section 110.12

NEC Article 230

NEC Section 402.3

Question 5 of 20

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

It is grounded at every instrument.

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

It is not grounded.

It is grounded at one end only.

Question 6 of 20

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

Stranding

Teflon®

Linking

Nylon

Question 7 of 20

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

Voltage rating

Cable type

Wire size

Prohibited uses

Question 8 of 20

9. Which of the following describes Type FCC cable?

Fine concentric copper

Flat conductor cable

Fine conductive cable

Fixture cable circuit

Question 9 of 20

10. Type NMS cable is described as ________.

medium voltage cable

nonmetallic slit cable

metal-clad cable

nonmetallic-sheathed cable

Question 10 of 20

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

red

grey

green

black

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

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

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

Question 12 of 20

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

shield drain

cable

channel wire assembly

fixture wire

Question 13 of 20

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

Type MC

Type MV

Type UF

Type TC

Question 14 of 20

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

Type MC and NM

Type UF and MC

Type NM and NMC

Type UF and NMC

Question 15 of 20

16. Size 4/0 wire has a ________.

smaller cross-sectional area than size 3/0

greater resistance than size 3/0

smaller diameter than size 3/0

greater cross-sectional area than size 3/0

Question 16 of 20

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

Fill the conduit with lubricant.

Put back-tension on the conductors to prevent kinking.

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

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

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 ________.

larger wire

solid wire

smaller wire

stranded wire

Question 18 of 20

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

Two-conductor cable

Three-conductor cable

Four-conductor cable

Five-conductor cable

Question 19 of 20

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

International Electrotechnical Commission

American Wire Gauge

Manufacturer's Foundation

Manufacturer's Gauge

Question 20 of 20

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