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1. What is the maximum allowable spacing between horizontal wireway supports?

8'

20'

15'

10'

Question 1 of 20

2. Which of the following types of conduit bodies has a 90∘ connector with the cover on the left?

Type LL

Type LRL

Type LR

Type LB

Question 2 of 20

3. What is another name for a standoff support?

Clamp back

Trapeze

Beam clamp

Minerallac®

Question 3 of 20

4. Which of the following shall only be applied when the number of current-carrying conductors in a wireway exceeds three?

End plates

Derating factors

Tee fittings

Trough crosses

Question 4 of 20

5. Which of the following can be found in NEC Article 344?

RMC support requirements

IMC marking requirements

Equipment grounding conductor sizes

IMC support requirements

Question 5 of 20

6. Which of the following are used to prevent damage to PVC caused by temperature changes?

Expansion couplings

Flex connectors

Combination couplings

Hinged couplings

Question 6 of 20

7. Which of the following is true of aluminum conduit?

It is more resistant to wet environments.

It requires more maintenance.

It does not require supplementary corrosion protection when used in concrete.

It is too thin to be threaded.

Question 7 of 20

8. What type of conduit is approved for direct burial?

EMT

IMC

RMC

HDPE

Question 8 of 20

9. What type of conduit is used to connect machines that vibrate during operation?

Black enamel steel conduit

RMC

Flexible metal conduit

Aluminum

Question 9 of 20

10. The purpose of a sealing fitting is to ________.

bundle wires and cables together

prevent the passage of gases, vapors, and flames through a conduit

connect conduit to boxes

carry wires through conduit and other types of raceways

Question 10 of 20

11. Which of the following conduits has a wall thickness less than that of RMC but thicker than EMT?

LFNC

PVC

HDPE

IMC

Question 11 of 20

12. EMT must be supported every ________.

3 feet

5 feet

15 feet

10 feet

Question 12 of 20

13.

Which kind of anchor is shown in the figure above?

Toggle bolt

Self-drilling

Drop-in

Drive-in

Question 13 of 20

14. Which types of conduit bodies are used to provide a pull point on a straight conduit run?

Type L

Type C

Type T

Type X

Question 14 of 20

15. NEC Article 386 contains ________.

regulations for combination raceways

information on multi-outlet assemblies

a list of the various types of special raceways

the installation specifications of surface metal raceways

Question 15 of 20

16. EMT is ________.

conduit that has been given a thin coating of PVC

often referred to as thinwall conduit and is too thin to be threaded

conduit that is constructed of metal thick enough to permit the cutting of pipe threads at each end

steel conduit coated with a black enamel

Question 16 of 20

17. To act as a moisture seal, an outer covering of liquidtight, sunlight-resistant flexible material is placed around ________.

liquidtight flexible nonmetallic conduit

high-density polyethylene conduit

liquidtight flexible metal conduit

rigid polyvinyl chloride conduit

Question 17 of 20

18. Which types of conduit bodies are used to join four intersecting conduits?

Type LL

Type X

Type T

Type LR

Question 18 of 20

19. What type of conduit should be used where corrosion is a factor?

IMC

PVC

RMC

Black enamel steel conduit

Question 19 of 20

20. The voltage drop of conductors carrying alternating current in PVC will be less than that of ________.

HDPE

identical conductors in steel conduit

LFNC

identical conductors in flexible conduit

Question 20 of 20

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