Question 1

PVC bends must be made so that the conduit remains undamaged and the internal diameter of the conduit is ____.

Accepted Answer

A)   not reduced
B)   reduced by no more than one third
C)   reduced by no more than one half
D)   reduced by no more than two thirdsE) A) and C)
F) B) and C)

Question 2

Rigid metal conduit (RMC)  is a threadable raceway of ____ designed for the physical protection and routing of conductors and cables.

Accepted Answer

A)   an incompressible material
B)   circular cross section
C)   galvanized steel
D)   various bending radiiE) B) and C)
F) All of the above

Question 3

Contact of dissimilar metals (except for the combination of aluminum and steel)  should be avoided wherever possible to lessen the potential for ____.

Accepted Answer

A)   galvanic action
B)   inadvertent shorting
C)   structural weakening
D)   static chargingE) All of the above
F) C) and D)

Question 4

A header is a transverse raceway ____.

Accepted Answer

A)   that forms a continuous, unbroken conductor connecting individual outlets
B)   in a cellular metal floor, that may be approved as enclosures for electric conductors
C)   within rigid tubing enclosed in tubular space whose axis is parallel to the axis of a metal floor member
D)   for electric conductors, providing access to predetermined cells of a cellular metal floorE) A) and D)
F) A) and B)

Question 5

Wireways are ____ housing and protecting electric wires (and cables) .

Accepted Answer

A)   conductors for signaling circuits between a motor
B)   troughs with hinged or removable covers for
C)   ceiling fixtures connecting to luminaires or
D)   current carrying junction boxesE) A) and C)
F) B) and C)

Question 6

Grounding conductors are required for circuits over ____ amperes.

Accepted Answer

A)   10
B)   20
C)   30
D)   40E) B) and C)
F) All of the above B

Question 7

All cut ends of IMC and RMC must be ____.

Accepted Answer

A)   anchored in a junction box
B)   welded
C)   color coded
D)   reamedE) A) and B)
F) C) and D)

Question 8

Surface nonmetallic raceways and their fittings must be designed so that sections can be mechanically coupled together and installed without subjecting the wires to ____.

Accepted Answer

A)   bending
B)   abrasion
C)   compression
D)   tensionE) B) and C)
F) None of the above

Question 9

The equivalent of ____ is the maximum allowed between pull points.

Accepted Answer

A)   one quarter bends (90° total) 
B)   two half bends (180° total) 
C)   three quarter bends (270° total) 
D)   four quarter bends (360° total) E) None of the above
F) A) and C)

Question 10

A group of conductors that fit into one conduit may not fit into another type because the ____ of different types of conduit vary.

Accepted Answer

A)   interfaces
B)   spacing requirements
C)   internal diameters
D)   carrying capacityE) All of the above
F) B) and D)

Question 11

The minimum approved electrical trade size for EMT is ____ inches.

Accepted Answer

A)   .15
B)   .25
C)   .5
D)   .75E) A) and B)
F) None of the above

Question 12

Electric metal tubing (EMT)  provides protection from ____.

Accepted Answer

A)   all but severe physical damage
B)   inadvertent grounding
C)   water damage
D)   lighteningE) B) and C)
F) B) and D)

Question 13

NEC  identifies ____ types of rigid PVC conduit.

Accepted Answer

A)   two
B)   three
C)   five
D)   tenE) None of the above
F) B) and C) C

Question 14

Flexible metal conduit (FMC)  is a raceway of circular cross section made of ____.

Accepted Answer

A)   PVC laminated steel
B)   helically wound, formed, and interlocked metal strips
C)   concentrically wound aluminum alloy
D)   interlocking metal and PVC conglomerateE) C) and D)
F) A) and D) B

Question 15

Splices and taps are permitted within surface metal raceway having a removable cover that ____.

Accepted Answer

A)   is accessible at another junction
B)   contains a trap facility
C)   contains a branch to a junction box
D)   remains accessible after installationE) B) and C)
F) A) and D)

Question 16

Article 100 defines raceway as a(n)  ____designed expressly for holding wires, cables, or busbars.

Accepted Answer

A)   bracketed suspension system
B)   enclosed channel of metallic (or nonmetallic)  materials
C)   polymer-based vertical conduit
D)   metallic ductE) A) and B)
F) C) and D)

Question 17

Liquidtight flexible metal conduit (LFMC)  is a raceway of circular cross section having a(n)  ____ over an inner flexible metal core.

Accepted Answer

A)   outer liquidtight, nonmetallic, sunlight-resistant jacket
B)   inflexible PVC coating
C)   immersible (water tight)  surface
D)   sunlight-resistant, rigid, metallic outer jacketE) B) and C)
F) C) and D)

Question 18

Underfloor raceway dead ends must be ____.

Accepted Answer

A)   open
B)   accessible
C)   closed
D)   non-accessibleE) A) and D)
F) B) and D)

Question 19

Bends must be made so that the conduit or tubing remains undamaged with its internal diameter ____.

Accepted Answer

A)   diminished by no more than a tenth
B)   diminished by no more than half
C)   diminished by no more than a third
D)   basically undiminishedE) A) and B)
F) A) and C)

Question 20

Half-round and flat-top raceways not over 4 inches in width must be covered by ____ or more of concrete (or wood) .

Accepted Answer

A)   .25 inches
B)   .5 inches
C)   .75 inches
D)   one inchE) A) and D)
F) None of the above

Exam 5: Raceways and Conductors

PVC bends must be made so that the conduit remains undamaged and the internal diameter of the conduit is ____.

Correct AnswerverifiedShow Answer

Rigid metal conduit (RMC) is a threadable raceway of ____ designed for the physical protection and routing of conductors and cables.

Correct AnswerverifiedShow Answer

Contact of dissimilar metals (except for the combination of aluminum and steel) should be avoided wherever possible to lessen the potential for ____.

Correct AnswerverifiedShow Answer

A header is a transverse raceway ____.

Correct AnswerverifiedShow Answer

Wireways are ____ housing and protecting electric wires (and cables) .

Correct AnswerverifiedShow Answer

Grounding conductors are required for circuits over ____ amperes.

Correct AnswerverifiedB

All cut ends of IMC and RMC must be ____.

Correct AnswerverifiedShow Answer

Surface nonmetallic raceways and their fittings must be designed so that sections can be mechanically coupled together and installed without subjecting the wires to ____.

Correct AnswerverifiedShow Answer

The equivalent of ____ is the maximum allowed between pull points.

Correct AnswerverifiedShow Answer

A group of conductors that fit into one conduit may not fit into another type because the ____ of different types of conduit vary.

Correct AnswerverifiedShow Answer

The minimum approved electrical trade size for EMT is ____ inches.

Correct AnswerverifiedShow Answer

Electric metal tubing (EMT) provides protection from ____.

Correct AnswerverifiedShow Answer

NEC identifies ____ types of rigid PVC conduit.

Correct AnswerverifiedC

Flexible metal conduit (FMC) is a raceway of circular cross section made of ____.

Correct AnswerverifiedB

Splices and taps are permitted within surface metal raceway having a removable cover that ____.

Correct AnswerverifiedShow Answer

Article 100 defines raceway as a(n) ____designed expressly for holding wires, cables, or busbars.

Correct AnswerverifiedShow Answer

Liquidtight flexible metal conduit (LFMC) is a raceway of circular cross section having a(n) ____ over an inner flexible metal core.

Correct AnswerverifiedShow Answer

Underfloor raceway dead ends must be ____.

Correct AnswerverifiedShow Answer

Bends must be made so that the conduit or tubing remains undamaged with its internal diameter ____.

Correct AnswerverifiedShow Answer

Half-round and flat-top raceways not over 4 inches in width must be covered by ____ or more of concrete (or wood) .

Correct AnswerverifiedShow Answer

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B

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C

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B

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