Journeyman Electrician Exam 3
Questions and answers | Latest 2024/25
RATED A+
Where a water pipe passes over an indoor motor control center, leak protection apparatus
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shall have a MINIMUM clearance of _____.
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a) 6 feet to the protection apparatus
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b) 6 feet to the water pipe
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c) 6 1⁄2 feet to the protection apparatus
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d) 6 1⁄2 feet to the water pipe - A: 6 feet to the protection apparatus
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Ref: 110.26(F)(1)(a) II
Branch circuit grounded conductors that are not connected to an overcurrent device shall
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be permitted to be sized at LEAST _____ of the continuous and noncontinuous load to be
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served.
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a) 100 percent
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b) 80 percent
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c) 75 percent
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d) 125 percent - A: 100 percent
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Ref: 210.19(A)(1), Ex. 2II II II
The MAXIMUM standard rating of the initial non-time-delay fuse for the branch-circuit,
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short-circuit, and ground-fault protection of a 1 HP, three-phase, 208-volt, squirrel-cage
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AC motor shall be _____.
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a) 6 amperes
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b) 10 amperes
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c) 15 amperes
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d) 20 amperes - C: 15 amperes
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Ref: 430.250; Tbl. 430.52; 430.52(C)(1), Ex.1
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Sol: FLC of motor - 4.6 amperes x 300% = 13.8 amperes
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For Class III equipment that is not subject to overloading the MAXIMUM surface
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temperature under operating conditions shall NOT exceed _____.
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a) 120°CII
b) 165°CII
c) 248°FII
d) 210°C - B: 165°C
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Ref: 503.5 II
, When a metal wireway contains splices and taps, the conductors, splices and taps shall
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not fill the wireway to more than _____ of its area at that point.
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a) 20 percent
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b) 30 percent
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c) 40 percent
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d) 75 percent - D: 75 percent
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Ref: 376.56(A) II
In an underground installed Schedule 40 PVC conduit system that consists of 50 feet in
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length between pulling points, what is the MAXIMUM number of bends this conduit run
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may have?
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a) four 90° bends
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b) six 90° bends
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c) four 120° bends
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d) two 90° bends - A: four 90° bends
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Ref: 352.26 II
Grounding electrodes made of pipe or conduit shall not be smaller than _____ electrical
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trade size.
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a) 1⁄2 inch
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b) 3⁄4 inch
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c) 1 inch
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d) 11⁄2 inch - B: 3/4 inch
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Ref: 250.52(A)(5)(a) II
II IILiquid-tight flexible metallic conduit (LFMC) shall NOT be used _____. II II II II II II II II II
a) in lengths in excess of 6 feet
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b) in concealed work
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c) in hazardous locations
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d) where subject to physical damage - D: where subject to physical damage
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Ref: 350.12(1) II
Determine the allowable ampacity of a size 3 AWG THHN copper conductor given the
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following: (1) Two current-carrying conductors are in the conduit. (2) The ambient
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temperature is 34°C. (3) The terminations are rated 60°C.
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a) 105.6 amperes
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b) 85.0 amperes
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c) 81.6 amperes
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d) 110 amperes - B: 85.0 amperes
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Ref: 110.14(C); 310.15(A)(2); Tbl. 310.16
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