Download Evaluation and Practice Test - E Light Safety, Training and

E Light Electric Services, Inc
303-754-0001
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Practice Licensing Exam – 2014 NEC
1. When are you required to use an approved electrically conductive
corrosion resistance compound on conduit threads?
A. In Class I areas
B. In Class II areas
C. On field cuts in corrosive areas
D. In Class III areas
2. Carnival and circus overhead wiring outside of tents and concession
areas where the voltage-to-ground does not exceed 150V shall
maintain a vertical clearance of _____ above platforms, projections
or surfaces from which they might be reached.
A. 5 ft.
B. 10 ft.
C. 12 ft.
D. 20 ft.
3. Class III locations are those that arre hazardous because of the
presence of _____________.
A. Flammable Gases
B. Flammable Dusts
C. Easily Ignitable Fibers
D. Unclassified Flammable Substance
4. What is the feeder or service demand load for two 3 kw ranges?
A. 4500 w
B. 5000 w
C. 3298 w
D. 5300 w
5. If the transfer switch for a portable generator switches the _________
conductor, then the portable generator shall be grounded in
accordance with NEC, Article 250.30.
A. Ungrounded
B. Bonded
C. Grounded
D. Green
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6. Service conductors shall be considered outside the building when run
under the building, if installed in conduit and buried _________
under earth.
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
7. Under a raised floor in an Information Technology Equipment Room,
liquidtight flexible non-metallic conduit shall be permitted to enclose
branch-circuit conductors for information technology communication
equipment.
A. True
B. False
8. A feeder for a motor circuit shall have a protective device with a
rating or setting ________ the largest rating of the branch-circuit
short-circuit and ground-fault protective device for any motor in the
group, plus the sum of the full load currents of the other motors of the
group.
A. equal to
B. not greater than
C. less than
D. not in excess of
9. The purpose of 60/120V power systems is to reduce objectionable
noise in areas containing sensitive electronic equipment. Its use is
restricted to ________ occupancies that are under close supervision
by qualified personnel.
A. Residential
B. Commercial
C. Industrial
D. Commercial and Industrial
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10. What is the demand on the main service entrance for a multi-family
dwelling unit for the electric dryers? The service will be 240V, single
phase. There are 14 apartments in the dwelling and each apartment is
equipped with a 4.2 kW dryer.
A. 24,000 w
B. 30,800 W
C. 45,000 W
D. 70,000 W
11. The outer metal sheath of interlocked MC cable is not listed as an
acceptable grounding return path; however, if the interlocked MC
cable contains an insulated 12 AWG or larger equipment grounding
conductor, it can be used to supply branch circuits in patient care
areas of health care facilities.
A. True
B. False
12. A branch circuit voltage that exceeds 277volts to ground and does not
exceed 600V between conductors is used to wire the auxiliary
equipment of electrical discharge lamps mounted on poles. The
minimum height of these luminaries shall not be less than ______.
A. 10 ft.
B. 15 ft.
C. 18 ft.
D. 22 ft.
13. When sizing a pull box in a straight run which contains conductors 4
AWG or larger, the length of the pull box shall not be less than _____
times the diameter of the largest raceway for systems not over 600
volts nominal.
A. 2
B. 4
C. 8
D. 10
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14. A 480V, three-phase service is fed by an overhead service drop. The
service drop crosses the alleyway behind the building. What is the
minimum clearance that must be maintained between the service drop
and the alleyway ground?
A. 10 ft.
B. 12 ft.
C. 15 ft.
D. 18 ft.
15. Water heaters having a capacity of _______ gallons or less shall have
a branch-circuit rating not less than 125% of the nameplate rating of
the water heater.
A. 80
B. 100
C. 120
D. 150
16. A single device consisting of multiple receptacles comprised of
______or more receptacles shall be computed at not less than 90 VA
per receptacle.
A. 5
B. 4
C. 3
D. 2
17. Energized parts of service equipment shall be ______ so that they
will not be exposed to accidental contact or they shall be guarded.
A. Enclosed
B. Protected
C. Restricted
D. Locked
18. Round boxes shall not be used with any wiring connector when a
locknut or bushing is connected to the side of the box.
A. True
B. False
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19. Dwelling unit or mobile home feeder conductors not over 400A can
be sized according to 310.15 (B)(7).
A. True
B. False
20. The additional service disconnecting means for a fire pump must be
installed in the same location and grouped together with the main
service disconnect.
A. True
B. False
21. Motors shall be located so that adequate _______ is provided and so
that maintenance, such as lubrication of bearings and replacing of
brushes, can be readily accomplished.
A. Cooling
B. Ventilation
C. Draining
D. None of these
22. The minimum point of attachment of the service-drop conductors to a
building shall in no case be less than ________.
A. 8 ft.
B. 10 ft.
C. 15 ft.
D. 18 ft.
23. No overcurrent device shall be inserted in a (n) __________
conductor except a circuit breaker that simultaneously opens all
conductors of the circuit in service equipment.
A. Ungrounded
B. Grounded
C. Energized
D. Electrical
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24. The ampacity of branch-circuit conductors and the rating or setting of
overcurrent protective devices supplying fixed electric heating
equipment for pipelines and vessels shall not be less than _____
percent of the total load of the heaters.
A. 80
B. 100
C. 125
D. 250
25. Wherever NM cable passes through factory or field openings in metal
members, it must be protected by _______ bushings or grommets that
cover the metal edges.
A. Approved
B. Identified
C. Marked
D. Listed
26. Fixture wires 18 AWG TFFN are rated for _________.
A. 12 amps
B. 10 amps
C. 8 amps
D. 6 amps
27. The requirement for maintaining a three-foot vertical clearance from
the edge of the roof shall not apply to the final conductor span where
the conductors are attached to _________.
A. The roof
B. The Service Mast
C. A House Boat Mast
D. The Side of the Building
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28. Ground fault protection is required for solidly grounded wye
electrical services for more than ________ volts to ground but not
exceeding _______ volts phase-to-phase for each disconnect rated
1000 amperes or more.
A. 277/480
B. 120/240
C. 150/600
D. 208/480
29. An electrician determining the box fill for a two-gang plastic nail on
box that is 2 1/8 inch deep will use the cubic inch volume of a four
square deep box for the purposes of box fill determination.
A. True
B. False
30. IGS cable is factory assembly of one or more conductors, each
individually insulated and enclosed in a loose-fit, nonmetallic flexible
conduit as an integrated gas spacer cable rated _______________.
A. 0-600 Volts
B. 0-150 Volts
C. 0-10,000 Volts
D. 1,000-15,000 Volts
31. The 125V, battery back-up smoke detector circuit for the bedroom of
a single family dwelling shall be protected by an AFCI.
A. True
B. False
32. Transformers of more than _______ rating shall be installed in a
transformer room of fire-resistant construction.
A. 50 KVA
B. 75KVA
C. 100.5KVA
D. 112.5KVA
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33. Plaster, drywall, or plasterboard surfaces that are broken or
incomplete shall be repaired so there will be no gaps or open spaces
greater than ________ at the edge of a box or fitting.
A. 1 mm
B. 2 mm
C. 3 mm
D. 5 mm
34. _________ is a type of multi-conductor cable permitted for use as an
underground service-entrance cable.
A. SE
B. NMB
C. NMS
D. USE
35. What is the minimum demand load for five 5 kw cook tops, two 4 kw
wall mounted ovens and four 7 kw wall mounted ovens in a
multifamily dwelling? Use all options available to determine the
minimum.
A. 31 kW
B. 20 kW
C. 17 kW
D. 10 kW
36. Fixed electric space-heating equipment requiring supply conductors
with an insulation rated over _____ shall be clearly and permanently
marked.
A. 90 C
B. 50 C
C. 60 C
D. 75 C
37. On fixed stage equipment, portable or strip luminaries and connector
strips shall be wired with conductors having an insulation rating
suitable for the temperature but not less than _______.
A. 75 C
B. 90 C
C. 100 C
D. 125 C
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38. What is the minimum sized THHN conductor that can be used to feed
the following (5) non-motor generator arc welders? 50A @ 60 Duty
Cycle, 60A @ 30 Duty Cycle, 100A @ 10 Duty Cycle, and two
welders that are rated at 50A I1eff @ 40 Duty Cycle. The welders and
overcurrent protection are all rated at 75 degrees Celsius.
A. 2/0 AWG
B. 3/0 AWG
C. 1/0 AWG
D. 4/0 AWG
39. A fuel cell system shall be evaluated and _________ for its intended
application prior to installation.
A. Approve
B. Marked
C. Labeled
D. Listed
40. All 120V, 15 and 20 ampere rated receptacles in a dwelling unit shall
be tamper resistant type.
A. True
B. False
41. Can type MC cable be used to feed a luminaire rated over 600 volts
that is installed in a highway tunnel?
A. True
B. False
42. The minimum sized service-drop conductor permitted by the Code is
_________ AWG aluminum or copper clad aluminum.
A. 1/0 and 2/0
B. 4 and 2
C. 8 and 6
D. 12 and 10
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43. The outer sheath of MI cable is made of __________.
A. Aluminum
B. Steel Alloy
C. Copper
D. Either Steel Alloy or Copper
44. Service conductors that are not encased in concrete and buried 18
inches or more below grade shall have their location identified by a
warning ribbon placed in the trench at least _________ above the
underground installation.
A. 6 inches
B. 10 inches
C. 12 inches
D. 18 inches
45. THHN circuit conductors that operate at 277V may not occupy the
same enclosure or raceway containing conductors that operate at 48V
dc that have a 300V insulation rating.
A. True
B. False
46. The patient care area is any portion of a health care facility, including
the business offices, corridors, lounges, day rooms, dining rooms or
similar areas.
A. True
B. False
47. An outdoor luminaire may be mounted on a tree providing it is no
larger than 16 inches in diameter.
A. True
B. False
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48. An intentionally constructed, permanent, low-impedance electrically
conductive path designed and intended to carry current under-fault
conditions from the point of a ground fault on a wiring system to the
electrical supply source is a definition of ___________________.
A. Effective ground fault return path
B. Electrically grounded system
C. Electrically bonded system
D. None of the above
49. What is the maximum time period that decorative lighting used for
Halloween may be installed and used?
A. 30 days
B. 60 days
C. 90 days
D. No limit, only Christmas Decorations are limited.
50. In non-residential use, what is the maximum overcurrent protection
for 2 AWG RHW aluminum conductors with an ambient temperature
of 88 degrees F?
A. 80 amperes
B. 90 amperes
C. 100 amperes
D. 110 amperes
51. The minimum clearance from clothes closet storage space to the
outside edge of a recessed, uncovered, fluorescent fixture in a closet
is _________.
A. 24 inches
B. 18 inches
C. 12 inches
D. 6 inches
52. All fluorescent luminaires installed in a dwelling unit shall have a
disconnecting means either in the fixture or adjacent to the fixture.
A. True
B. False
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53. When installing multi-conductor cables in EMT, the fill capacity
shall not exceed the allowable percentage of fill specified in
_________.
A. Table 4
B. Table 5
C. Table 8
D. None of these
54. In general, the neutral of a solidly grounded neutral system shall be
permitted to be grounded at more than one point.
A. True
B. False
55. What is the total cooking equipment demand on the main service
entrance for a single-family dwelling that is equipped with a single
2.1 kw cook top and one 4.9 kw wall-mounted oven and one 4.8 kw
wall-mounted oven?
A. 9257 va
B. 10,330 va
C. 7985 va
D. 11,800 va
56. A single family dwelling must have at least _________ 20 ampere
branch circuits.
A. 2
B. 3
C. 4
D. 5
57. An unattended self-service gasoline station is required to have two
emergency disconnects, what is the maximum distance from the
dispenser that one of the disconnects may be located.
A. 20 feet
B. 40 feet
C. 50 feet
D. 100 feet
© 2007,2008, 2009, 2010,2011,2012,2013,2014,2015,2016 Ted “Smitty” Smith
Electrical Experts Consulting
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58. What is the recommended sized overload for a 10hp, single-phase
AC motor operating on a 208V circuit? The nameplate rating of the
motor is 51.6 amps. The motor has a marked service factor of 1.15.
A. 25 amperes
B. 40 amperes
C. 59.34 amperes
D. 64.5 amperes
59. What is the net computed load for the lighting and receptacle circuits
for a dwelling unit that is 200 square meters and has one kitchen?
A. 2835 VA
B. 5835 VA
C. 6600 VA
D. 11100 VA
60. Which of the following functions shall not be connected to the life
safety branch circuits in a hospital _________.
A. Illumination of Egress
B. Admin Office Lighting
C. Exit Signs
D. Alarm and Alerting Systems
61. Motor control circuit devices with screw-type pressure terminals used
for 14 AWG or smaller copper conductors shall be torqued to
minimum of _________ inch pounds.
A. 1
B. .8
C. 5
D. 7
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62. What is the minimum number of 15A, 120V circuits required for the
lighting and receptacle circuits in a single family dwelling that is fed
with a 240V/120V service? The single-family dwelling has 1,890
square feet of habitable space.
A. 8
B. 7
C. 4
D. 3
63. Exposed vertical risers of rigid metallic conduit from fixed
equipment in other than dwelling units shall be permitted to be
supported at intervals not exceeding ______ meters, if the conduit is
made up of threaded couplings, the conduit is firmly supported at the
top and bottom of the riser, an no other means of intermediate
support is readily available.
A. 2
B. 6
C. 10
D. 20
64. The radius of a bend made in liquidtight flexible metal conduit shall
be measured to the ________ conduit.
A. Leading Edge
B. Lagging Edge
C. Centerline
D. None of these
65. In general, when installing a motor in one location and the motor
controller in another location that are not within sight of each other,
the minimum number of disconnecting means required is
___________.
A. One
B. Two
C. Three
D. Four
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66. A ballast in a fluorescent exit luminaire fixture _________ be
required to be thermally protected.
A. Shall
B. Shall not
67. A replacement snap switch is located within reach of earth ground
and is not grounded with an equipment-grounding conductor and no
means of grounding exists within the snap switch enclosure. In this
situation, the snap switch must be equipped with a ________.
A. Metal Faceplate
B. Non-metallic attachment screws
C. Non-conductive Faceplate
D. Both B and C
68. All 120V outlets in a dwelling unit except those installed in garages,
outdoors, bathrooms and kitchen counter tops shall be provided with
arc fault interrupter protection of the combination type for the branch
circuits supplying the outlets.
A. True
B. False
69. What is the minimum size type SO cord required to feed a 40hp, 460
volt, three-phase, AC, wound rotor motor in an ambient temperature
of 86 degrees F? The motor has a nameplate rating of 44.6A FLC.
A. 2 AWG
B. 4 AWG
C. 6 AWG
D. 8 AWG
70. What is the minimum cooking equipment demand on the service
entrance for a range in a single family dwelling that is rated at 16.9
kw?
A. 25.35 kw
B. 16.9 kw
C. 10 kw
D. 8.5 kw
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71. The identification of circuits in the directory of a panelboard shall be
such that each circuit is _______________ identified.
A. Accurately
B. uniquely
C. positively
D. negatively
72. A panel board equipped with snap switches rated 20 amperes, 30
amperes and 40 amperes has an overcurrent protection in the form of
a 250 ampere main breaker. Is this installation legal?
A. Yes
B. No
73. What is the minimum required size copper equipment grounding
conductor for a 15 ampere feeder installed in polyvinyl chloride
conduit that supplies swimming pool service equipment?
A. 14 AWG
B. 12 AWG
C. 10 AWG
D. 16 AWG
74. At least one entrance not less than 24 inches wide and 6.5 feet high
shall be provided to give access to the working space about the
electric equipment. Where the entrance has personnel doors, the
doors shall _____________. The equipment is rated 800A. The
personnel door is located within 25 of the equipment.
A. Remain locked when not in use
B. Remain sealed when under maintenance
C. Remain open when occupied
D. Open in the direction of egress
75. What is the minimum size common grounding electrode copper
conductor needed to run through a building to four, 480V to 208/120
V, three-phase transformers? Each transformer has 3/0 AWG copper
secondary phase conductor.
A. 4 AWG
B. 2 AWG
C. 3/0 AWG
D. 2/0 AWG
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76. What is the minimum ampacity for a feeder conductor for (5) squirrel
cage motors that are three phase, 208V, design B, continuous duty
rated and each motor has a nameplate rating of 26.2 A FLC and 10
HP?
A. 138A
B. 50A
C. 162A
D. 101A
77. # 12 AWG, THHN conductors installed in EMT which passes over a
ceiling that contains electric radiant heating panes and having a
clearance of 3 inches from the heating panels shall have their
ampacity reduced to ________. There is thermal insulation installed
in the ceiling that is 1 inch thick.
A. 30 amps
B. 27.3 amps
C. 24.6 amps
D. 23.2 amps
78. The emergency controls for attended self-service stations shall be
located no more than ______ from the gasoline dispensers.
A. 50 feet
B. 75 feet
C. 100 feet
D. 150 feet
79. It is permissible to supply a mobile home that is factory-equipped
with gas or oil-fired central heating equipment and cooking
appliances with a listed mobile home power-supply cord rated
________.
A. 25 amp
B. 30 amp
C. 40 amp
D. 50 amp
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80. The ampacity requirements for a disconnecting means for x-ray
equipment shall be based on the greater of _____ percent of the input
required for the momentary rating or 100 percent of the input
required for the long-time rating.
A. 25
B. 50
C. 80
D. 125
81. An irrigation machine may have hand-portable motors.
A. True
B. False
82. What is the minimum size copper equipment grounding conductor
required for a 400 ampere branch circuit? The ungrounded
conductors are sized using an adjusted value from the 90 C column of
Table 310.16. The ungrounded conductors were then up-sized from
500 kcmil to 750 kcmil.
A. 3 AWG
B. 2 AWG
C. 1 AWG
D. 1/0 AWG
83. The voltage at the line terminals of a fire-pump motor controller
(controller rated voltage) shall not drop more than ____ percent
below normal (controller-rated voltage) under motor-starting
conditions.
A. 10
B. 15
C. 25
D. 50
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84. What is the maximum-sized separate overload device that can be
used to protect a 480V, 20 hp, three-phase induction motor? The
motor has a nameplate full-load current of 22.8 A and a marked
service factor of 1.12. Assume the motor will experience no
problems with start-up after the overloads are installed.
A. 30 amperes
B. 26.22 amperes
C. 20.22 amperes
D. 15 amperes
85. In general, an equipment bonding jumper installed on the outside of a
raceway may not exceed ________.
A. 8 feet
B. 6 feet
C. 4 feet
D. 3 feet
86. The grounding conductor for a coaxial cable protector shall be
________ if it is used as part of a community antenna TV
distribution.
A. Long as possible
B. 3 feet
C. 7 feet
D. Short as possible
87. When a portable generator is used for portable optional standby
source and is not considered a separately derived system, what shall
the equipment-grounding conductor be bonded to ?
A. Generator frame and the grounded conductor
B. A grounding electrode only
C. The system grounding electrode
D. The grounded conductor
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88. Service entrance conductors shall be considered outside the building
if they are installed in conduit and covered with at least
_________mm of earth.
A. 100
B. 250
C. 450
D. 600
89. Automatically operated doors used for building egress in a hospital
shall be supplied from the ____________.
A. Equipment Branch
B. Critical Branch
C. Life Safety Branch
D. None of these
90. What is the minimum size equipment ground for a 5 hp, 3 phase,
208V motor with 20 ampere overload protection and 30 ampere duel
element time delay fuse short circuit protection?
A. 10 AWG
B. 14 AWG
C. 12 AWG
D. 8 AWG
91. How many grounded conductors may terminate in the same lug in a
panel board if the grounded conductors are not a part of a parallel
run.
A. 1
B. 2
C. 3
D. 4
92. What is the ampacity rating of each copper conductor when installing
five 10/2 with ground MC cables bundled together for a length of
four feet? Assume everything in the circuit is rated at 90 degrees
Centigrade.
A. 17.5 amperes
B. 20 amperes
C. 30 amperes
D. 35 amperes
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93. Fire Pump power circuits shall not have automatic protection from
_________________.
A. overcurrents
B. short circuits
C. ground faults
D. overloads
94. What is the maximum size solid ungrounded conductor that may be
installed in a raceway?
A. 10 AWG
B. 8 AWG
C. 6 AWG
D. 4 AWG
95. A three-phase 480V to 208/120V transformer is configured deltawye. The secondary line current on the transformer is 178.6 amperes.
What is the secondary phase current?
A. 103.12 amperes
B. 178.6 amperes
C. 25.78 amperes
D. 44.65 amperes
96. A three-phase 480V to 208/120V transformer is configured deltawye. The secondary line current on the transformer is 56.9 amperes.
What is the primary line current?
A. 98.55 amperes
B. 56.9 amperes
C. 24.64 amperes
D. 14.23 amperes
97. A circuit that has a total resistance of 57 ohms and a current of 9
amps will produce a power of _________ watts.
A. 2941
B. 4617
C. 513
D. 6.33
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98. What is the line to line voltage drop on 480 volt, three-phase AC
system? The circuit conductors are 3/0 copper and are installed
underground in schedule 80 rigid nonmetallic conduit. The circuit
length is 116 meters one direction. The circuit has a full load current
of 116.9 amperes.
A. 5.67 volts
B. 7.84 volts
C. 13.58 volts
D. 6.84 volts
99. What is the minimum sized grounding electrode conductor (copper)
that can be used for a 480V, 3 phase service rated at 400 amperes?
The service conductors are 250 kcmil Copper.
A. 3/0
B. 1/0
C. 1
D. 2
100.
What is the minimum sized rigid metal conduit that can be used
for a 12 inch long nipple between two panels if the conduit will
contain the following conductors: (3) 1/0 AWG RHW without outer
covering, (15) 12 AWG THHN, and (7) 6 AWG THW.
A. 1 inch
B. 1.5 inch
C. 2 inch
D. 3 inch
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Electrical Experts Consulting