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1. Size 4/0 wire has a ________.

smaller cross-sectional area than size 3/0

smaller diameter than size 3/0

greater cross-sectional area than size 3/0

greater resistance than size 3/0

Question 1 of 20

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

Blue

Black

Yellow

Green

Question 2 of 20

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

Nylon

Stranding

Linking

Teflon®

Question 3 of 20

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

Type UF and NMC

Type NM and NMC

Type UF and MC

Type MC and NM

Question 4 of 20

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

Three-conductor cable

Five-conductor cable

Two-conductor cable

Four-conductor cable

Question 5 of 20

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

It is not grounded.

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

It is grounded at one end only.

It is grounded at every instrument.

Question 6 of 20

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

Manufacturer's Foundation

American Wire Gauge

International Electrotechnical Commission

Manufacturer's Gauge

Question 7 of 20

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

black

red

green

grey

Question 8 of 20

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

NEC Chapter 9, Table 8

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

NEC Article 340

NEC Table 400.4

Question 9 of 20

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

Type TC

Type MV

Type MC

Type UF

Question 10 of 20

11. Which of the following describes Type TC cable?

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

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

Question 11 of 20

12. 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 can carry a higher voltage.

It cannot be used in ducts or plenums.

It is fungus- and corrosion-resistant.

Question 12 of 20

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

NEC Section 110.12

NEC Section 402.3

NEC Article 230

NEC Section 210.5(C)

Question 13 of 20

14. Which of the following describes Type FCC cable?

Fine concentric copper

Fine conductive cable

Fixture cable circuit

Flat conductor cable

Question 14 of 20

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

Wire size

Cable type

Voltage rating

Prohibited uses

Question 15 of 20

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

cable

shield drain

channel wire assembly

fixture wire

Question 16 of 20

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

solid wire

stranded wire

larger wire

smaller wire

Question 17 of 20

18. Type NMS cable is described as ________.

nonmetallic slit cable

medium voltage cable

nonmetallic-sheathed cable

metal-clad cable

Question 18 of 20

19. 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.

Fill the conduit with lubricant.

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

Question 19 of 20

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

Type UF

Type NM

Type NMC

Type MC

Question 20 of 20

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