Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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A general lighting branch circuit installed in a
house and protected by a 15-ampere circuit breaker may be wired with a __ AWG copper
conductor.
a. | 14 | c. | 10 | b. | 12 | d. | Any of the above |
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2.
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There is no maximum number of receptacles allowed
on 15, or 20 amp branch circuits in a house but it is suggested that the maximum number of
receptacles permitted on a 15-amp rated circuit be no more than 10 and the maximum number of
receptacles permitted on a 20-amp rated circuit be no more than __.
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3.
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Who decides whether 15 or 20 amp rated general
lighting circuits will be installed in a residential electrical system?
a. | The homeowner | c. | The
electrical contractor | b. | The
architect | d. | The plumber |
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4.
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Many electricians wire the lights and receptacles
in a room on different circuits because this .
a. | is required by the
NEC® | b. | is required by
building Codes | c. | offers the
advantage that all power in a room will not go out if the overcurrent protective device
trips | d. | simplifies
grounding |
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5.
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Residential wiring plans generally show lighting
and receptacle outlet locations but not circuits. The electrician should design the installation with
which of the following in mind: .
a. | economy - minimizing the number and length of
circuits | b. | convenience for the homeowner or other
user | c. | National Electrical Code®
requirements | d. | all of
these |
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6.
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The NEC® allows what maximum number of
receptacle outlets to be connected on a 120-volt residential lighting or small-appliance branch
circuit?
a. | eight | c. | thirteen | b. | ten | d. | unlimited |
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7.
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Which of the following rules of thumb can be
followed when planning branch circuits for dwelling units?
a. | one 15-ampere lighting circuit for every 600 square
feet | b. | one 20-ampere lighting circuit for every 800 square
feet | c. | load circuits to no more than 80% of their
rating | d. | all of these |
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8.
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The maximum volt-ampere loading permitted on a
15-ampere branch circuit is .
a. | 1,440 VA | c. | 1,920
VA | b. | 1,800 VA | d. | 2,400
VA |
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9.
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The maximum volt-ampere loading permitted on a
20-ampere branch circuit is .
a. | 1,440 VA | c. | 1,920
VA | b. | 1,800 VA | d. | 2,400
VA |
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10.
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Which of the following switch types is rarely used
in residential wiring?
a. | single-pole | c. | three-way | b. | double-pole | d. | four-way |
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11.
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How many lighting outlets are permitted on one
branch circuit?
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12.
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Receptacles installed on 15 and 20-ampere branch
circuits must be of the type.
a. | duplex | c. | ground-fault protected | b. | grounding | d. | arc-fault
protected |
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13.
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A rotary light dimmer suitable for use as a
ceiling fan speed control.
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14.
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Residential receptacles are required to be
installed so that the grounding slot is located on the .
a. | bottom or right side | c. | either a or b | b. | top or left
side | d. | none of these |
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15.
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Incandescent lighting fixtures are marked with
their .
a. | voltage | c. | amperes | b. | maximum lamp
wattage | d. | both a and b |
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16.
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Ceiling fans must be specially supported for all of
the following reasons, except for .
a. | weight | b. | torque (twisting motion, particularly when first
starting) | c. | safe grounding | d. | vibration |
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17.
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Ceiling fans weighing more than pounds are
required to be supported independently of the outlet box.
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18.
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Ceiling fan speed can be controlled by
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a. | pull chain on the fan | b. | speed control mounted in a wall box | c. | remote-control similar to TV/VCR type | d. | any of these |
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19.
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When installing a ceiling paddle fan that weighs
more than 35 lbs., the outlet box must be:
a. | listed and marked as acceptable for fan
support | b. | acceptable for fan support up to 70 lb.
(32kg) | c. | either metallic or
nonmetallic | d. | all of the
above |
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20.
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Receptacle outlets must be installed in any wall
space or more in width.
a. | 12 in. (300 mm) | c. | 18 in.
(450 mm) | b. | 24 in. (600 mm) | d. | 36 in. (900
mm) |
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21.
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Make the electrical connections according the floor
plan, where a wall light is controlled at one location. Use cable Romex. Indicate the color of the
conductors. Remark the conductor if is necessary.
a. |  | b. |  |
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22.
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Make the electrical connections according the floor
plan, where a wall light is controlled at one location. Use cable Romex. Indicate the color of the
conductors. Remark the conductor if is necessary.
a. |  | b. |  |
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