TAP Services

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

apply heat for a few seconds and then install the insulator

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

use PVC cement on the insulator before applying any heat

tape the insulator in place before applying heat

Question 1 of 20

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

aluminum or copper conductors

THWN conductors

aluminum conductors

copper conductors

Question 2 of 20

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

Parallel-tap connector

Motor connection kit

Wire nut

Heat-shrink insulator

Question 3 of 20

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

ends should be wrapped with THHN tape

length must be measured

thickness of the insulation must be measured

conductor ends must be stripped and cleaned

Question 4 of 20

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

rubber

glass cloth

vinyl plastic

high-temperature silicone rubber

Question 5 of 20

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

terminate conductors

brace conductors for short circuit stresses

train conductors

shield conductors

Question 6 of 20

7. A good electrical connection should ________.

last for approximately 90 days without any maintenance or repairs

have a resistance of no more than 13 ohms

have a resistance of no more than 25 ohms

be mechanically and electrically secure

Question 7 of 20

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

use the correct color coded connector

refer to the manufacturer's literature

check the NEC® code

use the smallest connector that will fit the conductor

Question 8 of 20

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

NEC Table 312.4

NEC Article 725

NEC Section 110.14

NEC Section 240.21

Question 9 of 20

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

strain relief and mechanical protection

rating for duty at increased voltages

suitability for cold weather duty

additional crimping force on the terminal

Question 10 of 20

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

Poorly insulated conductors

Oscillatory motion

Mechanical vibration

Poorly stripped conductors

Question 11 of 20

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

the same size stripping tool may be used for both

there is no difference in the two types

the diameters are different

the wire diameters are the same in both types

Question 12 of 20

13. When stripping conductors, be sure to ________.

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

make a chisel point on the conductor end

use cutting tools with jaws that butt against each other

retwist and tighten the wire strands

Question 13 of 20

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

An oxide-stabilization joint compound

An oxide-inhibiting joint compound

An oxide-promoting joint compound

An oxide-neutral joint compound

Question 14 of 20

15. 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 15 of 20

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

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

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

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

It is referenced by catalog number.

Question 16 of 20

17. 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 17 of 20

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

They should be twisted.

They should be No. 24 AWG or smaller.

Only one end is typically grounded.

They should be taped back on both ends.

Question 18 of 20

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

Crimp connectors

Screw terminals

Conductors

Drain wires

Question 19 of 20

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

CSA

AL-CU

AL-AL

Question 20 of 20

Mailing List

Quick Nav

TAP Services

	FOLLOW US ON SOCIAL MEDIA

TAP Services

Mailing List

Quick Nav

Get Social

TAP Services