National Electric Code NEC - Article 310
(a) 10, 10 - Reference NEC 2017 310.15 (A)(2) - ANS-The ampacity of a conductor can be
different along the length of the conductor. The higher ampacity can be used beyond the point of
transition for a a distance of no more than ____ ft, or no more than ____ percent of the circuit
length figured at the higher ampacity, whichever is less.
(a) 10, 10
(b) 10, 20
(c) 15, 15
(d) 20, 10
(a) 14 - Reference NEC 2017 Table 310.106(A) - ANS-The minimum size conductor permitted
for branch circuits under 600V is ____ AWG.
(a) 14
(b) 12
(c) 10
(d) 8
(a) neutral - Reference NEC 2017 310.15 (B)(5) - ANS-A ____ conductor that carries only the
unbalanced current from other conductors of the same circuit shall not be required to be
counted when applying the provisions of 310.15 (B)(3)(a).
(a) neutral
(b) ungrounded
(c) grounding
(d) none of these
(a) True - Reference NEC 2017 310.10 - ANS-Conductors shall be permitted for use in any of
the wiring methods recognized in Chapter 3 and as permitted in the NEC.
(a) True
(b) False
(a) True - Reference NEC 2017 310.10 (H)(3) - ANS-Where conductors in parallel are run in
separate raceways, the raceways shall have the same electrical characteristics
(a) True
(b) False
, (a) True - Reference NEC 2017 310.15 (A)(3) - ANS-No conductor shall be used where its
operating temperature exceeds that designated for the type of insulated conductor involved.
(a) True
(b) False
(a) True - Reference NEC 2017 310.15 (B)(2) - ANS-Each current-carrying conductor of a
paralleled set of conductors shall be counted as a current-carrying conductor for the purpose of
applying the adjustment factors of 310.15(B)(3)(a)
(a) True
(b) False
(a) True - Reference NEC 2017 310.15 (B)(5)(c) - ANS-On a three-phase, 4-wire, wye circuit,
where the major portion of the load consists of nonlinear loads, the neutral conductor shall be
counted when applying 310.15 (B)(3)(a) adjustment factors.
(a) True
(b) False
(a) True - Reference NEC 2017 310.15 (B)(6) - ANS-When determining the number of
current-carrying conductors, a grounding or bonding conductor shall not be counted when
applying the provisions of 310.15 (B)(3)(a).
(a) True
(b) False
(b) 24 - Reference NEC 2017 310.15 (B)(3)(a)(2) - ANS-Conductor adjustment factor shall not
apply to conductors in raceways having a length not exceeding ____ in.
(a) 12
(b) 24
(c) 36
(d) 48
(b) 75*C - Reference Know how to decode cable insulation - The "H" represents 75*C. -
ANS-THW insulation has a ____ rating when installed within electric-discharge lighting
equipment, such as through fluorescent luminaires.
(a) 60*C
(b) 75*C
(c) 90*C
(d) 105*C
(a) 10, 10 - Reference NEC 2017 310.15 (A)(2) - ANS-The ampacity of a conductor can be
different along the length of the conductor. The higher ampacity can be used beyond the point of
transition for a a distance of no more than ____ ft, or no more than ____ percent of the circuit
length figured at the higher ampacity, whichever is less.
(a) 10, 10
(b) 10, 20
(c) 15, 15
(d) 20, 10
(a) 14 - Reference NEC 2017 Table 310.106(A) - ANS-The minimum size conductor permitted
for branch circuits under 600V is ____ AWG.
(a) 14
(b) 12
(c) 10
(d) 8
(a) neutral - Reference NEC 2017 310.15 (B)(5) - ANS-A ____ conductor that carries only the
unbalanced current from other conductors of the same circuit shall not be required to be
counted when applying the provisions of 310.15 (B)(3)(a).
(a) neutral
(b) ungrounded
(c) grounding
(d) none of these
(a) True - Reference NEC 2017 310.10 - ANS-Conductors shall be permitted for use in any of
the wiring methods recognized in Chapter 3 and as permitted in the NEC.
(a) True
(b) False
(a) True - Reference NEC 2017 310.10 (H)(3) - ANS-Where conductors in parallel are run in
separate raceways, the raceways shall have the same electrical characteristics
(a) True
(b) False
, (a) True - Reference NEC 2017 310.15 (A)(3) - ANS-No conductor shall be used where its
operating temperature exceeds that designated for the type of insulated conductor involved.
(a) True
(b) False
(a) True - Reference NEC 2017 310.15 (B)(2) - ANS-Each current-carrying conductor of a
paralleled set of conductors shall be counted as a current-carrying conductor for the purpose of
applying the adjustment factors of 310.15(B)(3)(a)
(a) True
(b) False
(a) True - Reference NEC 2017 310.15 (B)(5)(c) - ANS-On a three-phase, 4-wire, wye circuit,
where the major portion of the load consists of nonlinear loads, the neutral conductor shall be
counted when applying 310.15 (B)(3)(a) adjustment factors.
(a) True
(b) False
(a) True - Reference NEC 2017 310.15 (B)(6) - ANS-When determining the number of
current-carrying conductors, a grounding or bonding conductor shall not be counted when
applying the provisions of 310.15 (B)(3)(a).
(a) True
(b) False
(b) 24 - Reference NEC 2017 310.15 (B)(3)(a)(2) - ANS-Conductor adjustment factor shall not
apply to conductors in raceways having a length not exceeding ____ in.
(a) 12
(b) 24
(c) 36
(d) 48
(b) 75*C - Reference Know how to decode cable insulation - The "H" represents 75*C. -
ANS-THW insulation has a ____ rating when installed within electric-discharge lighting
equipment, such as through fluorescent luminaires.
(a) 60*C
(b) 75*C
(c) 90*C
(d) 105*C
