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1. Which of the following inscriptions on a wire connector indicates that it is designed for use on both copper and aluminum wire?

AL-AL

CSA

AL-CU

Question 1 of 20

2. How can you determine the wire size that can be used effectively with an insulated barrel crimp connector?

It is the same as the bolt or screw size permitted.

It is indicated by the color-coding of the insulation on the connector.

It is the largest size of wire you can fit into the barrel.

It is referenced by catalog number.

Question 2 of 20

3. Which of the following eliminates the need for taping and the use of filler tape?

Wire nut

Motor connection kit

Parallel-tap connector

Heat-shrink insulator

Question 3 of 20

4. To properly install heat-shrink insulators, ________.

slip the insulator over the connector and apply heat for a few seconds

tape the insulator in place before applying heat

apply heat for a few seconds and then install the insulator

use PVC cement on the insulator before applying any heat

Question 4 of 20

5. Burnishes, nicks, and scrapes are generally the result of which of the following?

Oscillatory motion

Poorly insulated conductors

Poorly stripped conductors

Mechanical vibration

Question 5 of 20

6. A true statement concerning solid versus stranded conductors is ________.

the wire diameters are the same in both types

the diameters are different

there is no difference in the two types

the same size stripping tool may be used for both

Question 6 of 20

7. When installing mechanical connectors, which of the following is used to prevent the formation of surface oxides?

An oxide-promoting joint compound

An oxide-stabilization joint compound

An oxide-neutral joint compound

An oxide-inhibiting joint compound

Question 7 of 20

8. Stripped wire should be inserted into the barrel of the crimper until ________.

the insulation butts against the forward stop

the wire is visible through the inspection opening

the insulation is just inside the barrel

90% of the strands are inside the barrel

Question 8 of 20

9. To position cable so that it is not under tension, it is necessary to ________.

terminate conductors

shield conductors

train conductors

brace conductors for short circuit stresses

Question 9 of 20

10. Heat-shrink insulators are intended to provide ________.

strain relief and mechanical protection

suitability for cold weather duty

additional crimping force on the terminal

rating for duty at increased voltages

Question 10 of 20

11. Before a splice or connection can be made to a Type THHN conductor, the ________.

thickness of the insulation must be measured

length must be measured

ends should be wrapped with THHN tape

conductor ends must be stripped and cleaned

Question 11 of 20

12. When used in control cable, which of the following must be grounded in order to be effective?

Screw terminals

Crimp connectors

Drain wires

Conductors

Question 12 of 20

13. Wire connectors marked only with the wire size should only be used on ________.

aluminum or copper conductors

aluminum conductors

THWN conductors

copper conductors

Question 13 of 20

14. How should terminal space be measured from the end of the lug or wire connector?

In a straight line

Diagonally from the lug to the point where the wire leaves the terminal

Starting at the opposite end

At a 90° angle

Question 14 of 20

15. To determine the correct connector size for MC cable, ________.

use the smallest connector that will fit the conductor

refer to the manufacturer's literature

check the NEC® code

use the correct color coded connector

Question 15 of 20

16. When stripping conductors, be sure to ________.

use cutting tools with jaws that butt against each other

cut the insulation so that no frayed pieces or threads extend past the point of cutoff

retwist and tighten the wire strands

make a chisel point on the conductor end

Question 16 of 20

17. The NEC® section that governs electrical connections and splices is ________.

NEC Article 725

NEC Section 240.21

NEC Table 312.4

NEC Section 110.14

Question 17 of 20

18. Which of the following is true of drain wires in fire alarm and instrumentation cable?

Only one end is typically grounded.

They should be twisted.

They should be No. 24 AWG or smaller.

They should be taped back on both ends.

Question 18 of 20

19. The best electrical tape to use as a protective overwrap on high-voltage cables is ________.

vinyl plastic

glass cloth

high-temperature silicone rubber

rubber

Question 19 of 20

20. A good electrical connection should ________.

have a resistance of no more than 13 ohms

have a resistance of no more than 25 ohms

be mechanically and electrically secure

last for approximately 90 days without any maintenance or repairs

Question 20 of 20

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