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Journeyman Electrician -4 Questions and Answers 100% Solved
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Journeyman Electrician -4
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Journeyman Electrician #4Where conduits enter a floor-standing switchboard or panelboard at the bottom, the
conduits including their end fittings, shall not rise more than _____ above the bottom of
the enclosure.
a) 6 inches
b) 4 inches
c) 2 inches
d) 3 inches – answer D: 3 inches
Ref: 408.5
When installed on the service of a building or structure, a type 2 SPD (TVSS) shall be
connected _____.
a)on the line side of the service disconnect overcurrent device
b) on the load side of the service disconnect overcurrent device
c) on the meter housing
d) at the final overcurrent device – answer B: on the load side of the service disconnect
overcurrent device
Ref: 285.24(A)
A detached garage supplied from a dwelling with a three-wire feeder of size 4/0 AWG
aluminum USE cable with a 200-ampere rated circuit breaker for overcurrent protection
requires a MINIMUM size copper grounding electrode to a concrete encased electrode
of _____ AWG.
a) 8
b) 6
c) 4
d) 2 - answerC: 4
Ref: 250.52(A)(3)
When a raceway is run from the interior to the exterior of a building, the raceway shall
_____.
a) be rigid metal conduit (RMC)
b) be rigid polyvinyl chloride conduit (PVC)
c) be sealed with an approved material
d) have an explosion-proof seal - answerC: be sealed with an approved material
Ref: 300.7(A)
, A disconnecting means shall be provided on the supply side of all fuses in circuits
having a voltage of at LEAST _____ volts to ground.
a) 120
b) 250
c) 150
d) 277 - answerC: 150
Ref: 240.40
Given: an 80-ampere, 240-volt, single-phase, load is located 200 feet from the supply
panelboard and is supplied with size 3 AWG copper conductors with THHN/THWN
insulation. What is the approximate voltage-drop on this circuit? (K = 12.9)
a) 6.0 volts
b) 4.0 volts
c) 9.2 volts
d) 7.84 volts - answerD: 7.84 volts
Ref: Chpt. 9, Tbl. 8
Sol: VD = 2KID / CM
VD = (2 x 12.9 x 80 amps x 200') / 52,620 CM = 7.84 volts
Enclosures in a Class I, Division 1, location containing components that have arcing
devices must have an approved seal located within _____ of each conduit run entering
or leaving such enclosures.
a) 12 inches
b) 18 inches
c) 24 inches
d) 30 inches - answerB: 18 inches
Ref: 501.15(A)(1)
Surface-mounted incandescent luminaires installed on the wall above the door or on the
ceiling of a clothes closet shall have a clearance of at LEAST ____ between the
luminaire and the nearest point of storage.
a) 6 inches
b) 8 inches
c) 18 inches
d) 12 inches - answerD: 12 inches
Ref: 410.16(C)(1)
The NEC considers the area around the fuel dispensing pumps at a service station to
be a hazardous location. This area extends a height of 18 inches above grade, and up
to a distance from the enclosure of the dispensing pump of _____.
a) 5 feet
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