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

It is referenced by catalog number.

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

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

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

Question 1 of 20

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

the insulation butts against the forward stop

the insulation is just inside the barrel

90% of the strands are inside the barrel

the wire is visible through the inspection opening

Question 2 of 20

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

the diameters are different

the wire diameters are the same in both types

there is no difference in the two types

the same size stripping tool may be used for both

Question 3 of 20

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

They should be No. 24 AWG or smaller.

Only one end is typically grounded.

They should be taped back on both ends.

They should be twisted.

Question 4 of 20

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

check the NEC® code

use the smallest connector that will fit the conductor

use the correct color coded connector

refer to the manufacturer's literature

Question 5 of 20

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

An oxide-neutral joint compound

An oxide-promoting joint compound

An oxide-inhibiting joint compound

An oxide-stabilization joint compound

Question 6 of 20

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

Wire nut

Parallel-tap connector

Motor connection kit

Heat-shrink insulator

Question 7 of 20

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

strain relief and mechanical protection

suitability for cold weather duty

rating for duty at increased voltages

additional crimping force on the terminal

Question 8 of 20

9. A good electrical connection should ________.

have a resistance of no more than 13 ohms

be mechanically and electrically secure

have a resistance of no more than 25 ohms

last for approximately 90 days without any maintenance or repairs

Question 9 of 20

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

AL-CU

CSA

AL-AL

Question 10 of 20

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

Oscillatory motion

Poorly insulated conductors

Poorly stripped conductors

Mechanical vibration

Question 11 of 20

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

Drain wires

Conductors

Screw terminals

Crimp connectors

Question 12 of 20

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

NEC Table 312.4

NEC Section 110.14

NEC Section 240.21

NEC Article 725

Question 13 of 20

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

aluminum conductors

aluminum or copper conductors

copper conductors

THWN conductors

Question 14 of 20

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

thickness of the insulation must be measured

conductor ends must be stripped and cleaned

ends should be wrapped with THHN tape

length must be measured

Question 15 of 20

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

rubber

vinyl plastic

high-temperature silicone rubber

glass cloth

Question 16 of 20

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

shield conductors

terminate conductors

brace conductors for short circuit stresses

train conductors

Question 17 of 20

18. 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

use PVC cement on the insulator before applying any heat

apply heat for a few seconds and then install the insulator

Question 18 of 20

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

Starting at the opposite end

At a 90° angle

In a straight line

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

Question 19 of 20

20. When stripping conductors, be sure to ________.

use cutting tools with jaws that butt against each other

retwist and tighten the wire strands

make a chisel point on the conductor end

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

Question 20 of 20

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