Deck 4: Cables

Question 1

Type AC cable must have a bending radius at least ____ times the diameter of the cable.

A) two
B) three
C) five
D) ten

Answer 1

C

Question 2

Nonmetallic-sheathed cable passing through holes (or slots) in metal framing must be protected by ____ covering all metal edges.

A) plastic covers (insulation)
B) electrical tape
C) listed bushings (grommets)
D) rubber inserts

Answer 2

C

Question 3

Cover measurement commences at the top surface of any direct burial wiring method and ends at the ____ of the finished grade's top surface.

A) closest point
B) midpoint
C) farthest point
D) adjacent corner

Answer 3

A

Question 4

Cables running across the top of floor joists must be protected by _____.

A) insulation
B) guard strips
C) switch plates
D) stapling

Question 5

Generally, ungrounded (hot) conductors can be any color except ____.

A) yellow, red, or green with yellow stripes
B) red, yellow, or gray
C) white, gray, or red
D) white, gray, green, or, green with yellow stripe(s)

Question 6

Holes must be bored so that the edge of the hole is at least ____ from the nearest edge of the wood member.

A) 1 1/8 in.(29 mm)
B) 1 1/2 in.(38 mm)
C) 1 1/4 in.(32 mm)
D) 1 in.(25 mm)

Question 7

Exposed runs of Type AC cable installed on the underside of joists must be supported at ____.

A) every joist
B) alternate joists
C) every junction
D) alternate junctions

Question 8

A widely accepted practice is to identify 3-phase ungrounded (hot) conductors as ____ in 208/120 volt, 4-wire, wye-connected systems.

A) yellow, green, and blue
B) black, red, and blue
C) red, yellow, and green
D) black, red, and white

Question 9

Protection is required for cables located within 6 ft (1.8 m) (measured both vertically and horizontally) of the ____.

A) cable crossing
B) nearest junction
C) attic entrance
D) framing member

Question 10

Type AC cable shall have a(n) ____.

A) anti-short bushing
B) clamp fastening
C) flexible metal tape armor
D) internal grounding

Question 11

Electrical installation openings that penetrate into or through fire-resistant-rated structures must be ____.

A) firestopped
B) coated with insulation
C) surrounded by masonry
D) grounded

Question 12

Cables running horizontally (or diagonally) are considered supported and secured when passing through a(n) ____ unless the support intervals exceed those listed for the specified cable.

A) junction box
B) electrical panel
C) ground
D) framing member

Question 13

A cable assembly's ____ conductor can be used as a switch loop (leg) in single-pole, three-way, and four-way switch installations, even though it is an ungrounded (hot) conductor.

A) yellow or red
B) black or white
C) white or gray
D) gray or yellow

Question 14

Cable installed under a building must be ____ unless the wiring method is Type MC or Type MI cable that is identified for direct burial.

A) contained in a concrete conduit
B) above the sewer access line
C) adjacent to a ground
D) in a raceway

Question 15

A key provision found in most of the cable articles states that the cable must not be installed where subject to ____.

A) weather
B) physical damage
C) traffic
D) electrical interference

Question 16

Ducts used to transport dust, loose stock, or flammable vapors shall not contain ____ of any type.

A) junction boxes
B) wiring systems
C) electrical grounds
D) panel boxes

Question 17

Cables entering or exiting conduit used for support or protection against physical damage require fittings on the conduit ends to prevent ____.

A) electrical shorts
B) fire
C) cable abrasion
D) weather exposure