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Exam 12: Raceway Installation

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Question 21

Multiple Choice

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EMT must be supported at least every __________ along the run. (General Rule)

A) 3'
B) 5'
C) 10'
D) 12'

E) A) and D)
F) A) and C)

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Question 22

Multiple Choice

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The NEC requires that a(n) __________ be used for the protection of conductors sized 4 AWG and larger installed in conduit.

A) antioxidant
B) coupling
C) locknut
D) insulated bushing

E) A) and B)
F) C) and D)

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Question 23

Multiple Choice

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A(n) __________ plastic cap on the ends of rigid metal conduit designates inch trade sizes.

A(n) __________ bend is a conduit bend that is made with two equal-degree bends in such a way so the conduit changes elevation and avoids an obstruction.

To find the maximum number of conductors of the same size and insulation type permitted in various types and sizes of conduit, you would look in __________ of the National Electrical Code.

List at least 5 raceway types that could be used in residential wiring.

Where only two conductors are installed in a raceway, the conduit cannot be filled to more than __________ of the conduit's cross-sectional area.

The metric designator for 6" trade size rigid metal conduit is __________.

The maximum number of 14 AWG conductors with THHN insulation that you could install in a 3/8" trade size FMC is __________ if the connector fittings are inside or __________ if the connector fittings are outside. (assume the use of a grounding conductor)

The number of bends in a conduit run from one box to another box cannot exceed a total of ____________________ degrees.

A(n) __________ bend is a conduit bend formed by two 90-degree bends with a straight length of conduit between the two bends.

Describe a conduit body.

Rigid Metal Conduit must be supported within __________ of outlet boxes, junction boxes, cabinets, and conduit bodies. (General Rule)

A(n) __________ bend is a conduit bend that results in a conduit going over an object that is blocking the path of the run.

RMC, IMC, EMT, and PVC conduits come in standard __________ foot lengths.

When installing more than two conductors in a conduit or tubing, the maximum percentage of fill allowed by the NEC is __________.

The metric designator for 1/2" trade size EMT is __________.

Expansion fittings are generally provided in exposed runs of rigid pvc conduit where __________.

Conduit systems must be completely installed before the electrical conductors are permitted to be pulled in.

The securing and supporting requirements for Flexible Metal Conduit are the same as those for Type NM cable.