Construction wiring test 2 UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Conductor sizes up through 4/0 AWG are expressed in American Wire Gauge (AWG). Conductor
sizes larger than 4/0 AWG are expressed in - CORRECT ANSWER - kcmil
The smallest wire size for which overcurrent protection is specified in the Code is - CORRECT
ANSWER - 14 AWG
The NEC requires that conductors 8 AWG and larger must be _______ when installed -
CORRECT ANSWER - stranded
Branch circuit conductors shall have an ampacity ______ the maximum to be served. -
CORRECT ANSWER - not less than
Older electrical books and plans sometimes use the term "MCM", which means the same thing as
______ - CORRECT ANSWER - kcmil
The rating of a branch circuit is determined by its ____. - CORRECT ANSWER -
overcurrent protective device (fuse or circuit breaker)
The total rating of utilization equipment fastened in place, other than luminaires (lighting
fixtures), shall not exceed ____ percent of the branch-circuit ampere rating, where lighting units,
cord and plug connected utilization equipment not fastened in place, or both, are also supplied -
CORRECT ANSWER - 50
For given conductor size, which material has the greatest ampacity? - CORRECT
ANSWER - copper
, Connectors marked _____are suitable for use with aluminum, copper, or copper-clad conductors.
Connectors not so marked are for use with copper conductors only. - CORRECT
ANSWER - AL/CU
Table 310.15(B)(2)(a) gives allowable ampacities of copper conductors with various types of
insulation. When conductors will be used in ambient temperatures exceeding 30 C(86 F), the
______ for the table must be applied. - CORRECT ANSWER - correction factors
Under certain circumstances, the grounded (neutral) conductors of a residential service _______
permitted to be sized smaller than the phase conductors. - CORRECT ANSWER - are
Low voltage (high voltage drop) in a home can be caused by ________
a. a conductor that is to small for the load
b. a circuit that is too long
c. poor connections at the terminals
d. all of these - CORRECT ANSWER - all of these
Type NM cable can be run in all of the following locations, except for - CORRECT
ANSWER - damp and moist locations and exterior masonry block or tile walls
When a 4 ft. piece of nonmetallic-sheathed cable is used as a fixture whip above an accessible
ceiling, it ________ - CORRECT ANSWER - is not required to be secured
The ampacity of Type NM cable shall be in accordance with ____ conductor temperature rating -
CORRECT ANSWER - 60 C (140 F)
Type AC cable is manufactured with ________ phase conductors. - CORRECT
ANSWER - two three and four
The National Electrical Code allows rigid PVC conduit to do all of the following except for
________ - CORRECT ANSWER - support lighting fixtures
ACTUAL Exam Questions and CORRECT
Answers
Conductor sizes up through 4/0 AWG are expressed in American Wire Gauge (AWG). Conductor
sizes larger than 4/0 AWG are expressed in - CORRECT ANSWER - kcmil
The smallest wire size for which overcurrent protection is specified in the Code is - CORRECT
ANSWER - 14 AWG
The NEC requires that conductors 8 AWG and larger must be _______ when installed -
CORRECT ANSWER - stranded
Branch circuit conductors shall have an ampacity ______ the maximum to be served. -
CORRECT ANSWER - not less than
Older electrical books and plans sometimes use the term "MCM", which means the same thing as
______ - CORRECT ANSWER - kcmil
The rating of a branch circuit is determined by its ____. - CORRECT ANSWER -
overcurrent protective device (fuse or circuit breaker)
The total rating of utilization equipment fastened in place, other than luminaires (lighting
fixtures), shall not exceed ____ percent of the branch-circuit ampere rating, where lighting units,
cord and plug connected utilization equipment not fastened in place, or both, are also supplied -
CORRECT ANSWER - 50
For given conductor size, which material has the greatest ampacity? - CORRECT
ANSWER - copper
, Connectors marked _____are suitable for use with aluminum, copper, or copper-clad conductors.
Connectors not so marked are for use with copper conductors only. - CORRECT
ANSWER - AL/CU
Table 310.15(B)(2)(a) gives allowable ampacities of copper conductors with various types of
insulation. When conductors will be used in ambient temperatures exceeding 30 C(86 F), the
______ for the table must be applied. - CORRECT ANSWER - correction factors
Under certain circumstances, the grounded (neutral) conductors of a residential service _______
permitted to be sized smaller than the phase conductors. - CORRECT ANSWER - are
Low voltage (high voltage drop) in a home can be caused by ________
a. a conductor that is to small for the load
b. a circuit that is too long
c. poor connections at the terminals
d. all of these - CORRECT ANSWER - all of these
Type NM cable can be run in all of the following locations, except for - CORRECT
ANSWER - damp and moist locations and exterior masonry block or tile walls
When a 4 ft. piece of nonmetallic-sheathed cable is used as a fixture whip above an accessible
ceiling, it ________ - CORRECT ANSWER - is not required to be secured
The ampacity of Type NM cable shall be in accordance with ____ conductor temperature rating -
CORRECT ANSWER - 60 C (140 F)
Type AC cable is manufactured with ________ phase conductors. - CORRECT
ANSWER - two three and four
The National Electrical Code allows rigid PVC conduit to do all of the following except for
________ - CORRECT ANSWER - support lighting fixtures
