NEC PRACTICAL PRACTICE TEST (PART
2) QUESTIONS AND ANSWER S WITH
SOLUTIONS
Question :1) The total rating of a cord and plug connected
room air conditioner must not exceed ______ of the rating of a branch circuit where lighting outlets, other appliances, or general use receptacles are also supplied (a) 75% (b) 50% (c) 100% (d) 80%
Correct answer:b. 50%
Question :2) Except for storable pools, fixed or stationary
equipment other than an underwater luminaire cord must not
exceed ____ in length:
(a) 4.5 ft (b) 2.5 ft (c) 5 ft (d) 3 ft
Correct answer:d. 3 ft
Question :3) Receptacles located more than _____ above the
floor are not required to be tamper resistant:
(a) 4.5 ft
(b) 5.5 ft (c) 4 ft (d) 6 ft
Correct answer:b. 5.5 ft
Question :4) The feeder circuit for a mobile or a mobile or
manufactured home must be rated at not less than ____ at
120/240V
(a) 100 A (b) 50 A (c) 75 A (d) 200 A
Correct answer:a. 100 A
Question :5) ______ circuit breakers or sets of fuses are
acceptable as over current device to provide overload
protection in one family dwellings:
(a) 2 to 6 (b) 2 to 12 (c) 4 to 6 (d) 4 to 12
Correct answer:a. 2 to 6
Question :6) At least _____ of free conductor, measured from
the point in the box where it emerges from its raceway or
cable sheath shall be left at each outlet, junction and switch
point:
(a) 5 in (b) 4 in (c) 6 in (d) 3 in
Correct answer:c. 6 in
Question :7) Splices and taps must be accessible and must
not fill raceway to more than _____ of its cross-sectional
area:
(a) 100% (b) 80% (c) 75% (d) 50%
Correct answer:c. 75%
Question :8) A two pole circuit breaker or fusible switch
shall be considered as _____ over current devices:
(a) One (b) Two (c) Four (d) Three
Correct answer:b. Two
Question :9) _____ is the maximum approved electrical trade
size for PVC conduit:
(a) 6 in (b) 0.5 in (c) 2 in (d) 4 in
Correct answer:a. 6 in
Question :10) The overhead service conductors above a roof
with a slope of at least 4.in in 12.in have a minimum
clearance of ______:
(a) 5 ft (b) 2.5 ft (c) 4 ft (d) 3 ft
Correct answer:d. 3 ft
Question :11) A switch or circuit breaker enclosure may be
used as a raceway if the conductor fill doesnot exceed _____
:
(a) 40% (b) 80% (c) 75% (d) 50%