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Residential Electrician Exam 1 Newest 100% VERIFIED CORRECT | UPDATED
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Residential Electrician Exam 1 Newest 100% VERIFIED CORRECT | UPDATED
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Residential Electrician Exam 1 Newest100% VERIFIED CORRECT | UPDATED
Ferrous metal enclosures for grounding electrode conductors shall be _____.
a) electrically continuous
b) electrically isolated
c) not permitted
d) rigid metal conduit (RMC) only - A: electrically continuous
Ref: 250.64(E)
Unless listed for the control of other loads, general use dimmer switches shall only be
used to control _____.
a) switched receptacles for cord-connected incandescent luminaires
b) permanently installed incandescent luminaires
c) ceiling fans with luminaires
d) holiday decorative lighting - B: permanently installed incandescent luminaires
Ref: 404.14(E)
All 125-volt, single-phase, 15- and 20-ampere receptacles installed in residential
garages shall be _____.
I) protected by a listed arc-fault interrupter
II) provided with ground-fault circuit-interrupter protection
a) I only
b) II only
c) both I and II
d) neither I nor II - B: II only
Ref: 210.8(A)(2); 210.12(B)
The MAXIMUM allowable ampacity of size 18 AWG fixture wire is _____ amperes.
a) 12
b) 10
c) 8
d) 6 - D: 6
Ref: Tbl. 402.5
A receptacle outlet installed for a gas or electric clothes dryer in the laundry room of a
dwelling unit must be installed within at LEAST _____ feet of the intended location of
the dryer.
a) 6
b) 4
c) 10
d) 3 - A: 6
Ref: 210.50(C)
, Which of the following listed conductors are required to have overcurrent protection on
a residential electric service?
a) grounding conductors
b) bonding conductors
c) identified conductors
d) ungrounded conductors - D: ungrounded conductors
ii ii ii ii ii ii ii ii
Ref: 290.9 ii
Given: a 40-gallon electric water heater has a nameplate rating of 4,500 watts at 240 volts.
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What is the MAXIMUM standard size circuit breaker the NEC permits to protect the water
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heater?
ii
a) 20 amperes ii ii
b) 25 amperes ii ii
c) 30 amperes
ii ii
d) 45 amperes - C: 30 amperes
ii ii ii ii ii ii ii ii
Ref: 422.11(E)(3); 240.6(A); Current Formula
ii ii ii ii
Sol: ii
I = P/E
ii ii
I = 4500 va / 240 volts
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I = 18.75 amps x 150 percent
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I = 28.1 amperes
ii ii ii
If a cable or raceway enters an enclosure such as a meter base, above uninsulated live
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parts in a wet location, the fittings used to connect the enclosure must be _____ for wet
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locations.
ii
a) identified ii
b) marked ii
c) suitableii
d) listed - D: listed
ii ii ii ii ii ii
Ref: 312.2(A) ii
In general, the power supply cord to a mobile home shall have a MAXIMUM rating of
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_____.
ii
a) 50 amperes ii ii
b) 60 amperes ii ii
c) 100 amperes
ii ii
d) 125 amperes - A: 50 amperes
ii ii ii ii ii ii ii ii
Ref: 550.10(A) ii
A 150 kVA, single-phase transformer having a secondary voltage of 120/240 is to be
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installed at a multi-family dwelling. The current available at the secondary is _____
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amperes.
ii
a) 329 ii
b) 421 ii
c) 625 ii
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