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North Carolina (NC) Limited Electrical Contractor
Licensing Exam | Latest Verified Questions and
Detailed Answers
QUESTION 1
What is the minimum size copper grounding electrode conductor required for a service
with 2/0 AWG copper service-entrance conductors?
A) 8 AWG
B) 6 AWG
C) 4 AWG
D) 2 AWG
CORRECT ANSWER: C
EXPERT RATIONALE: Per NEC Table 250.66, for copper service-entrance conductors size
2/0 AWG, the minimum grounding electrode conductor is 4 AWG copper.
QUESTION 2
In North Carolina, which entity is responsible for issuing electrical contractor licenses?
A) North Carolina Department of Insurance
B) North Carolina State Board of Examiners of Electrical Contractors
C) North Carolina Building Code Council
D) North Carolina Licensing Board for General Contractors
CORRECT ANSWER: B
EXPERT RATIONALE: The North Carolina State Board of Examiners of Electrical
Contractors licenses and regulates electrical contractors per Chapter 87, Article 4 of NC
General Statutes.
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QUESTION 3
What is the maximum permitted overcurrent protection device rating for a 12 AWG
copper branch circuit conductor with 60°C insulation, serving lighting outlets?
A) 15 amps
B) 20 amps
C) 25 amps
D) 30 amps
CORRECT ANSWER: B
EXPERT RATIONALE: NEC 240.4(D) limits 12 AWG copper to 20 amps, and 310.16 shows
25 amps ampacity for 60°C, but the small conductor rule overrides.
QUESTION 4
For a 240-volt, single-phase, 5-horsepower motor with a full-load current of 28 amperes
per Table 430.248, what is the maximum size inverse-time circuit breaker permitted for
branch-circuit short-circuit and ground-fault protection?
A) 40 amps
B) 50 amps
C) 70 amps
D) 80 amps
CORRECT ANSWER: C
EXPERT RATIONALE: NEC Table 430.52 allows 250% of FLC for an inverse-time breaker;
28 A × 250% = 70 A, which is a standard rating.
QUESTION 5
According to the NC Electrical Contractors Licensing Law, what is the minimum required
experience for a Limited Electrical Contractor license applicant?
A) 2 years
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B) 3 years
C) 4 years
D) 5 years
CORRECT ANSWER: B
EXPERT RATIONALE: North Carolina General Statute 87-43.1 requires at least 3 years of
experience in electrical contracting or equivalent for a limited license.
QUESTION 6
What is the minimum branch-circuit conductor ampacity for an electric water heater
rated 4500 watts, 240 volts, single-phase?
A) 15 amps
B) 20 amps
C) 25 amps
D) 30 amps
CORRECT ANSWER: D
EXPERT RATIONALE: Load = 4500/240 = 18.75 A. As a continuous load per NEC 422.13,
branch-circuit rating must be 125% of 18.75 = 23.4 A, requiring a 30 A circuit and
conductor ampacity of at least 23.4 A.
QUESTION 7
Where must a bonding jumper be installed for a metal raceway containing service
conductors?
A) At the supply end only
B) At the load end only
C) At both ends
D) At any accessible point
CORRECT ANSWER: C
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EXPERT RATIONALE: NEC 250.92 requires bonding at both ends of a metal raceway
containing service conductors to ensure an effective ground-fault path.
QUESTION 8
Beyond how many current-carrying conductors in a raceway must ampacity adjustment
factors be applied?
A) 3
B) 4
C) 6
D) 9
CORRECT ANSWER: A
EXPERT RATIONALE: NEC 310.15(C)(1) requires adjustment factors when the number of
current-carrying conductors exceeds three.
QUESTION 9
In a dwelling unit, the minimum spacing between kitchen countertop receptacles is such
that no point along the wall line is more than how many feet from a receptacle outlet?
A) 2 feet
B) 4 feet
C) 6 feet
D) 8 feet
CORRECT ANSWER: A
EXPERT RATIONALE: NEC 210.52(C)(1) requires receptacles so no point along the wall
line is more than 24 inches (2 feet) horizontally from a receptacle outlet.
QUESTION 10
According to NC Board rules, an electrical contractor must notify the Board in writing of
North Carolina (NC) Limited Electrical Contractor
Licensing Exam | Latest Verified Questions and
Detailed Answers
QUESTION 1
What is the minimum size copper grounding electrode conductor required for a service
with 2/0 AWG copper service-entrance conductors?
A) 8 AWG
B) 6 AWG
C) 4 AWG
D) 2 AWG
CORRECT ANSWER: C
EXPERT RATIONALE: Per NEC Table 250.66, for copper service-entrance conductors size
2/0 AWG, the minimum grounding electrode conductor is 4 AWG copper.
QUESTION 2
In North Carolina, which entity is responsible for issuing electrical contractor licenses?
A) North Carolina Department of Insurance
B) North Carolina State Board of Examiners of Electrical Contractors
C) North Carolina Building Code Council
D) North Carolina Licensing Board for General Contractors
CORRECT ANSWER: B
EXPERT RATIONALE: The North Carolina State Board of Examiners of Electrical
Contractors licenses and regulates electrical contractors per Chapter 87, Article 4 of NC
General Statutes.
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QUESTION 3
What is the maximum permitted overcurrent protection device rating for a 12 AWG
copper branch circuit conductor with 60°C insulation, serving lighting outlets?
A) 15 amps
B) 20 amps
C) 25 amps
D) 30 amps
CORRECT ANSWER: B
EXPERT RATIONALE: NEC 240.4(D) limits 12 AWG copper to 20 amps, and 310.16 shows
25 amps ampacity for 60°C, but the small conductor rule overrides.
QUESTION 4
For a 240-volt, single-phase, 5-horsepower motor with a full-load current of 28 amperes
per Table 430.248, what is the maximum size inverse-time circuit breaker permitted for
branch-circuit short-circuit and ground-fault protection?
A) 40 amps
B) 50 amps
C) 70 amps
D) 80 amps
CORRECT ANSWER: C
EXPERT RATIONALE: NEC Table 430.52 allows 250% of FLC for an inverse-time breaker;
28 A × 250% = 70 A, which is a standard rating.
QUESTION 5
According to the NC Electrical Contractors Licensing Law, what is the minimum required
experience for a Limited Electrical Contractor license applicant?
A) 2 years
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B) 3 years
C) 4 years
D) 5 years
CORRECT ANSWER: B
EXPERT RATIONALE: North Carolina General Statute 87-43.1 requires at least 3 years of
experience in electrical contracting or equivalent for a limited license.
QUESTION 6
What is the minimum branch-circuit conductor ampacity for an electric water heater
rated 4500 watts, 240 volts, single-phase?
A) 15 amps
B) 20 amps
C) 25 amps
D) 30 amps
CORRECT ANSWER: D
EXPERT RATIONALE: Load = 4500/240 = 18.75 A. As a continuous load per NEC 422.13,
branch-circuit rating must be 125% of 18.75 = 23.4 A, requiring a 30 A circuit and
conductor ampacity of at least 23.4 A.
QUESTION 7
Where must a bonding jumper be installed for a metal raceway containing service
conductors?
A) At the supply end only
B) At the load end only
C) At both ends
D) At any accessible point
CORRECT ANSWER: C
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EXPERT RATIONALE: NEC 250.92 requires bonding at both ends of a metal raceway
containing service conductors to ensure an effective ground-fault path.
QUESTION 8
Beyond how many current-carrying conductors in a raceway must ampacity adjustment
factors be applied?
A) 3
B) 4
C) 6
D) 9
CORRECT ANSWER: A
EXPERT RATIONALE: NEC 310.15(C)(1) requires adjustment factors when the number of
current-carrying conductors exceeds three.
QUESTION 9
In a dwelling unit, the minimum spacing between kitchen countertop receptacles is such
that no point along the wall line is more than how many feet from a receptacle outlet?
A) 2 feet
B) 4 feet
C) 6 feet
D) 8 feet
CORRECT ANSWER: A
EXPERT RATIONALE: NEC 210.52(C)(1) requires receptacles so no point along the wall
line is more than 24 inches (2 feet) horizontally from a receptacle outlet.
QUESTION 10
According to NC Board rules, an electrical contractor must notify the Board in writing of
