Exam (elaborations)
Journeyman Electrician -5 Questions and Answers
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Journeyman Electrician -5
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Journeyman Electrician #5Unless listed and identified otherwise, terminations and conductors of sizes 14 AWG
through 1 AWG shall be rated at _____.
a) 75°C
b) 75°F
c) 90°C
d) 60°C - answerD: 60°C
Ref: 110.14(C)(1)(a)(1)
The MINIMUM size copper equipment bonding jumper on the supply side of a service
consisting of parallel copper phase conductors with a total circular mil area of 2000
kcmil shall be ____.
a) 2/0 AWG
b) 3/0 AWG
c) 4/0 AWG
d) 250 kcmil - answerD: 250 kcmil
Ref: 250.102(C)
Sol: 2,000 kcmil x 12.5% = 250 kcmil
Which of the following grounding electrodes is NOT permitted to be used as an effective
ground-fault current path?
a) the metal frame of a building or structure
b) a metal underground water pipe in direct contact with the earth for 10 feet or more
c) an electrode encased by at least 2 inches of concrete
d) the earth - answerD: the earth
Ref: 250.4(A)(5); 250.54
Primary overcurrent devices, impedance limiting means, or other inherent protective
means shall be permitted to protect a motor control circuit transformer when the
transformer is rated no more than _____ VA.
a) 50
b) 60
c) 75
d) 100 - answerA: 50
Ref: 430.72(C)(3)
, When installing electric space heating cables in ceilings, which of the following
statements is/are true?
a) The heating cables are permitted to be installed over walls.
b) The non-heating leads of the cables shall be at least 6 inches in length
c) The heating cables shall be kept free from contact with other electrically conductive
surfaces.
d) All of these statements are true. - answerC: The heating cables shall be kept free
from contact with other electrically conductive surfaces.
Ref: 424.38(B)(1); 424.34; 424.41(H)
Given: An unbroken length of size 12 AWG conductor is looped inside a junction box so
that there is more than 12 inches of free conductor. The conductor is not spliced and
does not terminate on a device. What volume, in cubic inches, must be counted for the
looped conductor?
a) 2.25 cubic inches
b) 3.25 cubic inches
c) 4.50 cubic inches
d) 4.00 cubic inches - answerC: 4.50 cubic inches
Ref: 314.16(B)(1); Tbl. 314.16(B)
Sol: 2.25 cubic inches x 2 wires = 4.50 cubic inches
Nonmetallic sheathed cable is permitted to be used _____.
a) in buildings of type III, IV, and V construction
b) as open runs in suspended ceilings of commercial buildings
c) in buildings of type I and II construction
d) in conduit installed underground - answerA: in buildings of type III, IV, and V
construction
Ref: 334.10(2)
Given: a boat repair shop has several 120-volt, 20-ampere generalpurpose receptacle
outlets installed at a height of 16 inches in a work area where gasoline may be handled
and mechanical ventilation is not provide. The outlets are considered to be installed in
a/an _____ location.
a) Class I, Division 1
b) Class I, Division 2
c) Class II, Division 1
d) Unclassified - answerB: Class I, Division 2
Ref: 555.22; 511.3(C)(1)(b)
A luminaire rated at 7 amperes requires a MINIMUM size _____ AWG fixture wire.
a) 12
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