Mike Holt Chapter 3 Study Guide with
Complete Solutions
100 - ANSWER-Handhole enclosure covers shall require the use of tools to open, or
they shall weigh over ___ lb.
14 - ANSWER-The minimum size copper conductor permitted for branch circuits under
600V is ___ AWG.
2 - ANSWER-For one-family dwellings and the individual dwelling units of two-family
and multifamily dwellings, single-phase feeder conductors consisting of ___ ungrounded
conductor(s) and the neutral conductor from a 208Y/120 volt system shall be permitted
to be sized in accordance with 310.15(B)(7)(1) through (3).
60 - ANSWER-If cables meeting the requirements in 310.15(B)(3)(4)a through C with
more than 20 current-carrying conductors are installed longer than 24 in. without
maintaining spacing, are stacked, or are supported on bridle rings, a ___ percent
adjustment factor shall be applied.
60 degrees Celsius - ANSWER-Type AC cable installed in thermal insulation shall have
conductors that are rated at 90 degrees Celsius. The ampacity of the cable in this
application shall not exceed that of a ___ rated conductor.
Aluminum - ANSWER-___ is a nonferrous, nonmagnetic metal that has no heating due
to hysteresis heating.
Angle - ANSWER-In an FMC installation, ___ connectors shall not be concealed.
approved - ANSWER-IMC, elbows, couplings, and fittings shall be permitted to be
installed in concrete, in direct contact with the earth, or in areas subject to severe
corrosive influences where protected by corrosion protection ___ for the condition.
at intervals not exceeding 4 1/2 ft - ANSWER-FMC shall be supported and secured ___.
be listed and identified for such use - ANSWER-Type MC cable shall be listed and
fittings used for connecting Type MC cable to boxes, cabinets, or other equipment shall
___.
C. A and B - ANSWER-At type AC cable terminations, a(n) ___ shall be provided.
A. fitting (or box design) that protects the conductors from abrasion
B. insulating bushing between the conductors and the cable armor
C. A and B
D. none of these
, C. A and B - ANSWER-Wiring methods and cabling systems, listed for use in other
spaces used for environmental air (plenums), shall be permitted to be installed in ducts
specifically fabricated for environmental air-handling purposes.
A. only if necessary to connect to equipment or devices associated with the direct action
upon or sensing of the contained air
B. if the total length of such wiring methods of cabling systems does not exceed 4 ft
C. A and B
D. none of these
C. A or B - ANSWER-Metal wireways are sheet metal troughs with ___ for housing and
protecting electric conductors and cable.
A. removable covers
B. hinged covers
C. a or b
D. none of these
combustible - ANSWER-in walls constructed of wood or other ___ material, electrical
cabinets shall be flush with the finished surface or project therefrom.
corrosion protection - ANSWER-Galvanized steel, stainless steel, and red brass RMC
elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct
contact with the earth, or in areas subject to severe corrosive influences when protected
by ___ approved for the condition.
couplings - ANSWER-Running threads shall not be used on RMC for connections at
___.
D. A and B - ANSWER-Cable trays shall be ___ except as permitted by 392.18(D).
A. exposed
B. accessible
C. concealed
D. A and B
D. A or B - ANSWER-All conductors of the same circuit shall be ___, unless otherwise
specifically permitted in the Code.
A. in the same raceway or cable
B. in close proximity in the same trench
C. the same size
D. A or B
D. A or B - ANSWER-Aluminum raceways, cable trays, cablebus, auxiliary gutters,
cable armor, boxes, able sheathing, cabinets, elbows, couplings, nipples, fittings,
supports, and support hardware ___ shall be provided with supplementary corrosion
protection.
A. embedded or encased in concrete
B. in direct contact with the earth
Complete Solutions
100 - ANSWER-Handhole enclosure covers shall require the use of tools to open, or
they shall weigh over ___ lb.
14 - ANSWER-The minimum size copper conductor permitted for branch circuits under
600V is ___ AWG.
2 - ANSWER-For one-family dwellings and the individual dwelling units of two-family
and multifamily dwellings, single-phase feeder conductors consisting of ___ ungrounded
conductor(s) and the neutral conductor from a 208Y/120 volt system shall be permitted
to be sized in accordance with 310.15(B)(7)(1) through (3).
60 - ANSWER-If cables meeting the requirements in 310.15(B)(3)(4)a through C with
more than 20 current-carrying conductors are installed longer than 24 in. without
maintaining spacing, are stacked, or are supported on bridle rings, a ___ percent
adjustment factor shall be applied.
60 degrees Celsius - ANSWER-Type AC cable installed in thermal insulation shall have
conductors that are rated at 90 degrees Celsius. The ampacity of the cable in this
application shall not exceed that of a ___ rated conductor.
Aluminum - ANSWER-___ is a nonferrous, nonmagnetic metal that has no heating due
to hysteresis heating.
Angle - ANSWER-In an FMC installation, ___ connectors shall not be concealed.
approved - ANSWER-IMC, elbows, couplings, and fittings shall be permitted to be
installed in concrete, in direct contact with the earth, or in areas subject to severe
corrosive influences where protected by corrosion protection ___ for the condition.
at intervals not exceeding 4 1/2 ft - ANSWER-FMC shall be supported and secured ___.
be listed and identified for such use - ANSWER-Type MC cable shall be listed and
fittings used for connecting Type MC cable to boxes, cabinets, or other equipment shall
___.
C. A and B - ANSWER-At type AC cable terminations, a(n) ___ shall be provided.
A. fitting (or box design) that protects the conductors from abrasion
B. insulating bushing between the conductors and the cable armor
C. A and B
D. none of these
, C. A and B - ANSWER-Wiring methods and cabling systems, listed for use in other
spaces used for environmental air (plenums), shall be permitted to be installed in ducts
specifically fabricated for environmental air-handling purposes.
A. only if necessary to connect to equipment or devices associated with the direct action
upon or sensing of the contained air
B. if the total length of such wiring methods of cabling systems does not exceed 4 ft
C. A and B
D. none of these
C. A or B - ANSWER-Metal wireways are sheet metal troughs with ___ for housing and
protecting electric conductors and cable.
A. removable covers
B. hinged covers
C. a or b
D. none of these
combustible - ANSWER-in walls constructed of wood or other ___ material, electrical
cabinets shall be flush with the finished surface or project therefrom.
corrosion protection - ANSWER-Galvanized steel, stainless steel, and red brass RMC
elbows, couplings, and fittings shall be permitted to be installed in concrete, in direct
contact with the earth, or in areas subject to severe corrosive influences when protected
by ___ approved for the condition.
couplings - ANSWER-Running threads shall not be used on RMC for connections at
___.
D. A and B - ANSWER-Cable trays shall be ___ except as permitted by 392.18(D).
A. exposed
B. accessible
C. concealed
D. A and B
D. A or B - ANSWER-All conductors of the same circuit shall be ___, unless otherwise
specifically permitted in the Code.
A. in the same raceway or cable
B. in close proximity in the same trench
C. the same size
D. A or B
D. A or B - ANSWER-Aluminum raceways, cable trays, cablebus, auxiliary gutters,
cable armor, boxes, able sheathing, cabinets, elbows, couplings, nipples, fittings,
supports, and support hardware ___ shall be provided with supplementary corrosion
protection.
A. embedded or encased in concrete
B. in direct contact with the earth
