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Exam 12: Raceway Installation

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Question 1

Multiple Choice

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

A) 100
B) 155
C) 175
D) 208

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

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Question 2

Multiple Choice

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The NEC defines Type __________ as an unthreaded thinwall raceway of circular cross section designed for the physical protection and routing of conductors and cables.

A) EMT
B) IMC
C) PVC
D) RMC

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

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Question 3

Multiple Choice

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Expansion fittings are generally provided in exposed runs of Type PVC where __________.

The NEC considers horizontal runs of Type EMT supported by openings through framing members at intervals not greater than 10' and securely fastened within 3 feet of termination points to be properly supported.

Three-point and four-point bends are types of __________ bends.

The securing and supporting requirements for liquidtight flexible metal conduit (Type LFMC) are the same as which of the following?

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

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

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

Type ENT must be supported at intervals not exceeding __________ feet.(General Rule)

The metric designator for 1/2-inch trade-size Type EMT is __________.

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.

Describe a conduit body.

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.

Describe the technique that must be used if the length of a conduit run is longer than the length of your longest fish tape.

Section 300.9 states that when installing conduits above grade in a wet location (like outdoors on the side of a house), the interior of the conduit is considered a wet location.

A separate equipment grounding conductor must always be installed in runs of Type ENT.

According to Underwriters Laboratories, lengths of flexible metal conduit longer than __________ have not been judged suitable for equipment grounding purposes.

The conduit bend used on the conduit ends when the conduit enters a box or other electrical enclosure that is surface mounted is called a(n) _________________________ bend.

A steel fish tape should be used when pulling conductors through an installed conduit system and into an energized loadcenter.