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Residential Electrician Exam 3 | Newest Revised Edition | Latest 2024/25
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Residential Electrician Exam 3 | Newest Revised Edition | Latest 2024/25
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Residential Electrician Exam 3 | NewestRevised Edition | Latest 2024/25
What is the MAXIMUM allowable cord length for the cord supplying a cord-and-plug
connected dishwasher installed under a kitchen counter in a dwelling unit?
a) 11⁄2 feet
b) 2 feet
c) 3 feet
d) 4 feet - D: 4 feet
Ref: 422.16(B)(2)(2)
What is the MINIMUM size copper SE cable with type THHW insulation that may be
used as ungrounded, service-entrance phase conductors for a 150 ampere-rated,
120/240-volt, singlephase, residential service?
a) 1/0 AWG
b) 1 AWG
c) 2 AWG
d) 3 AWG - B: 1 AWG
Ref: Tbl. 310.15(B)(6)
For outlet boxes designed to support ceiling-suspended (paddle) fans that weigh more
than _____ pounds, the required marking shall include the maximum weight to be
supported.
a) 20
b) 30
c) 35
d) 70 - C: 35
Ref: 314.27(D)
A connection to a driven or buried grounding electrode shall ______.
a) be accessible
b) not be required to be accessible
c) not permitted to be buried
d) be visible - B: not be required to be accessible
Ref: 250.68(A), Ex.1
What is the MAXIMUM allowable standard size circuit breaker rating that may be used
to protect a size 8 AWG copper NM-B cable supplying an electric range?
a) 30 amperes
b) 40 amperes
c) 50 amperes
d) 60 amperes - B: 40 amperes
Ref: 334.80; Tbl. 310.16
, The MAXIMUM number of size 10 AWG conductors permitted in a 4 inch x 11⁄4 inch
octagon metal junction box is _____.
a) two
b) four
c) five
d) six - C: five
II II II II II II
Ref: Tbl. 314.16(A)
II II
Determine the MINIMUM number of 15-ampere, 120-volt general lighting branch-circuits
II II II II II II II II II II
required for a dwelling that has 2,600 square feet of habitable space.
II II II II II II II II II II II II
a) three
II
b) four
II
c) five
II
d) six - C: five
II II II II II II
Ref: 220.12; Tbl. 220.12
II II II
Sol:
2,600 sq. ft. x 3 VA = 7,800 VA (total lighting VA of house)
II II II II II II II II II II II II II
120 volts x 15 amperes = 1,800 VA (one circuit)
II II II II II II II II II
7,800 VA (house)/1,800 VA (one circuit) = 4.3 = 5 circuits
II II II II II II II II II II
When calculating the total load on a dwelling unit, how many VA per square feet must be
II II II II II II II II II II II II II II II II II
included for the general purpose receptacle outlets?
II II II II II II II
a) none
II
b) oneII
c) two
II
d) three - A: none
II II II II II II
Ref: 220.14(J)(1)
II
When calculating the total load for a dwelling unit, what is the MINIMUM load, in VA, that
II II II II II II II II II II II II II II II II II
must be added for the two required small appliance branch-circuits?
II II II II II II II II II II
a) 1,200 VA
II II
b) 1,500 VA
II II
c) 2,400 VA
II II
d) 3,000 VA - D: 3,000 VA
II II II II II II II II
Ref: 220.52(A) II
Sol:
1,500VA x 2 circuits required = 3,000VA II II II II II II
It shall be permissible to apply a demand factor of _____ percent to the nameplate-rating
II II II II II II II II II II II II II II II
load of four or more fastened in place electric water heaters in a multi-family dwelling unit.
II II II II II II II II II II II II II II II II
a) 50 II
b) 75 II
c) 80II
d) 90 - B: 75
II II II II II II
Ref: 220.53 II
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