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