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Residential Wiring Midterm Exam Questions and Answers
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Residential Wiring Midterm Exam Questions and Answers
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Residential Wiring Midterm ExamQuestions and Answers
When nonmetallic device boxes that are 2-gang or more are used, the installed
Type NM cable must be secured no more than __________ inches from the box.
a.12
b.10
c.18
d.8
a 12
A low resistance path, which results in a high value of current that flows around,
rather than through, a circuit is called a(n) __________ circuit.
a. grounded
b. short
c. grounding
d. open
1. A ____________________-ampere overcurrent protection device is required
for a residential general-purpose branch circuit wired with a 12 AWG copper
conductor.
20
,1. A(n) _________________________________ is a fuse type that has a time-
delay feature built into it and is often used as an overcurrent protection device for
electric motor circuits.
dual-element time-delay fuse
1. If a switching device has the marking CU ONLY on it, an electrician can use only
__________ wire with the device.
copper
1. ____________________ switches are used to control one or more lighting
loads from two or more locations.
three-way
1. A(n)_________ is an entranceway or transitional space from the exterior to the
interior of a house.
foyer
1. Where cables and raceways are installed less than 1-1/4 inches from the edge
of framing members, a metal plate at least ____________________ thick must be
installed to protect the cables and raceways. (General Rule)
1/16-inch
1. The minimum number of small appliance circuits required by the NEC ® in each
house is __________.
2
1. There is no maximum number of receptacles allowed on 15- or 20-ampere
branch circuits in a house according to the NEC ® but it is suggested that the
maximum number of receptacles permitted on a 15-ampere rated circuit be no
more than 10 and the maximum number of receptacles permitted on a 20-
ampere rated circuit be no more than __________.
13
, 1. Lamp ________is a ratio of the number of lumens a lamp produces to each
watt of power it uses.
efficacy
1. The brass-colored terminals on a three-way switch are called the __________
terminals.
traveler
1. A(n) ________ is a device used to determine dimensions on a set of building
plans and is usually three-sided with each side marked with specific calibrated
scales.
architect's scale
1. An electrician discovers that a two-wire cable has been installed instead of a
three-wire cable. To remedy the problem, the electrician installs an additional
single insulated conductor along with the two-wire cable. This wiring method is
acceptable according to the NEC ®.
F
1. The term used by electricians to describe the process of installing a residential
electrical system is ____________________.
wiring
1. The metal frame that a receptacle or switch is built around is called a(n)
____________________.
yoke
1. Where should carbon monoxide (CO) alarms be mounted?
Near bedrooms and living areas
Where occupants where hear the alarm while sleeping
On each level of a home and out of reach of children
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