Journeyman Electrician # 1 Test Questions and
Answers Rated A
A listed instantaneous water heater shall be c) 36 inches
permitted to be subdivided into circuits protected d) 48 inches - ANSWER -B: 30 inches
at NOT more than _____. Ref: 250.53(H)
a) 60 amperes
b) 100 amperes
c) 120 amperes Determine the MAXIMUM allowable ampacity of
d) 150 amperes - ANSWER -D: 150 a size 1/0 AWG THW copper current-carrying
amperes conductor installed in a common raceway with
Ref: 422.11(F)(3) three other current-carrying conductors of the
same size. Ambilent temperature is 86°F.
a) 150 amperes
The interior of enclosures or raceways installed b) 105 amperes
underground shall be considered to be a _____. c) 112 amperes
d) 120 amperes - ANSWER -D: 120
a) wet location amperes
b) damp location Ref: Tbl. 310.16; Tbl. 310.15(B)(2)(a)
c) moist location Sol: Size 1/0 AWG THW ampacity (before
d) dry location - ANSWER -A: wet location derating) = 150 amperes
Ref: 300.5(B) 150 amperes x 80% (adjustment factor) = 120
amperes
The continuity of the grounding conductor system
for portable electrical carnival equipment shall be The NEC defines a continuous-load to be a load
verified ____. where the maximum current on the circuit is
expected to continue for at least _____ hours or
a) and recorded on an annual basis more.
b) and recorded on a quarterly basis
c) and recorded on a monthly basis a) 3
d) each time the equipment is connected - b) 4
ANSWER -D: each time the equipment is c) 6
connected d) 8 - ANSWER -A: 3
Ref: 525.32 REf: Art. 100
A plate type grounding electrode shall be Determine the MINIMUM size THW copper
installed below the surface of the earth NOT less branch-circuit conductors required by the NEC to
than _____. supply a three-phase, continuous duty, AC motor
that has a full-load current of 70 amperes.
a) 24 inches Assume all terminations to be rated at 75°C.
b) 30 inches
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Answers Rated A
A listed instantaneous water heater shall be c) 36 inches
permitted to be subdivided into circuits protected d) 48 inches - ANSWER -B: 30 inches
at NOT more than _____. Ref: 250.53(H)
a) 60 amperes
b) 100 amperes
c) 120 amperes Determine the MAXIMUM allowable ampacity of
d) 150 amperes - ANSWER -D: 150 a size 1/0 AWG THW copper current-carrying
amperes conductor installed in a common raceway with
Ref: 422.11(F)(3) three other current-carrying conductors of the
same size. Ambilent temperature is 86°F.
a) 150 amperes
The interior of enclosures or raceways installed b) 105 amperes
underground shall be considered to be a _____. c) 112 amperes
d) 120 amperes - ANSWER -D: 120
a) wet location amperes
b) damp location Ref: Tbl. 310.16; Tbl. 310.15(B)(2)(a)
c) moist location Sol: Size 1/0 AWG THW ampacity (before
d) dry location - ANSWER -A: wet location derating) = 150 amperes
Ref: 300.5(B) 150 amperes x 80% (adjustment factor) = 120
amperes
The continuity of the grounding conductor system
for portable electrical carnival equipment shall be The NEC defines a continuous-load to be a load
verified ____. where the maximum current on the circuit is
expected to continue for at least _____ hours or
a) and recorded on an annual basis more.
b) and recorded on a quarterly basis
c) and recorded on a monthly basis a) 3
d) each time the equipment is connected - b) 4
ANSWER -D: each time the equipment is c) 6
connected d) 8 - ANSWER -A: 3
Ref: 525.32 REf: Art. 100
A plate type grounding electrode shall be Determine the MINIMUM size THW copper
installed below the surface of the earth NOT less branch-circuit conductors required by the NEC to
than _____. supply a three-phase, continuous duty, AC motor
that has a full-load current of 70 amperes.
a) 24 inches Assume all terminations to be rated at 75°C.
b) 30 inches
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