Georgia Electrical Contractor Class II
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. Which of the following is the primary purpose of the National
Electrical Code (NEC)?
A. To increase the cost of electrical installations
B. To provide minimum standards for electrical safety
C. To promote competition among electricians
D. To enforce state licensing laws
B. To provide minimum standards for electrical safety
Rationale: The NEC sets minimum safety standards to protect people
and property from electrical hazards.
2. What is the maximum number of 12 AWG copper conductors allowed
in a standard 20-ampere residential outlet box, assuming no other
conductors are present?
A. 2
B. 3
C. 4
D. 5
C. 4
Rationale: According to NEC 314.16(B), a standard 20-ampere box
can hold 4 conductors of 12 AWG copper, including ground and
devices.
,3. Which type of conductor insulation is rated for wet locations?
A. THHN
B. XHHW
C. NM-B
D. UF-B
B. XHHW
Rationale: XHHW insulation is designed for wet locations, while
THHN is for dry and damp locations.
4. When installing a 3-way switch circuit, how many traveler wires are
required between the two switches?
A. 1
B. 2
C. 3
D. 4
B. 2
Rationale: Two traveler wires are used to connect the two 3-way
switches, allowing control of a single light from two locations.
5. What is the minimum height above finished grade for outdoor service-
entrance conductors to a residential building?
A. 6 feet
B. 8 feet
C. 10 feet
D. 12 feet
C. 10 feet
Rationale: NEC 230.24 requires service-entrance conductors to
maintain at least 10 feet clearance above grade to prevent
accidental contact.
6. Which device provides overcurrent protection by automatically
opening a circuit during an overload?
A. Transformer
B. Contactor
C. Circuit breaker
D. Capacitor
C. Circuit breaker
, Rationale: Circuit breakers trip automatically when current exceeds
the rated value, protecting wiring and equipment.
7. In residential wiring, which conductor is normally used as the neutral?
A. Black
B. White
C. Red
D. Green
B. White
Rationale: NEC convention uses white (or gray) as the neutral
conductor in AC wiring.
8. What is the primary function of a GFCI outlet?
A. Provide surge protection
B. Prevent electrocution by detecting ground faults
C. Increase voltage supply
D. Reduce electrical noise
B. Prevent electrocution by detecting ground faults
Rationale: GFCI outlets detect current leakage to ground and trip to
prevent electrical shock.
9. According to the NEC, the minimum size copper grounding electrode
conductor for a 100-amp residential service is:
A. 6 AWG
B. 8 AWG
C. 10 AWG
D. 4 AWG
A. 6 AWG
Rationale: NEC Table 250.66 specifies 6 AWG copper for grounding a
100-amp service to a rod or electrode.
10. What is the allowable voltage drop for feeder circuits in a
residential installation?
A. 1%
B. 3%
C. 5%
D. 10%
B. 3%
Examination Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. Which of the following is the primary purpose of the National
Electrical Code (NEC)?
A. To increase the cost of electrical installations
B. To provide minimum standards for electrical safety
C. To promote competition among electricians
D. To enforce state licensing laws
B. To provide minimum standards for electrical safety
Rationale: The NEC sets minimum safety standards to protect people
and property from electrical hazards.
2. What is the maximum number of 12 AWG copper conductors allowed
in a standard 20-ampere residential outlet box, assuming no other
conductors are present?
A. 2
B. 3
C. 4
D. 5
C. 4
Rationale: According to NEC 314.16(B), a standard 20-ampere box
can hold 4 conductors of 12 AWG copper, including ground and
devices.
,3. Which type of conductor insulation is rated for wet locations?
A. THHN
B. XHHW
C. NM-B
D. UF-B
B. XHHW
Rationale: XHHW insulation is designed for wet locations, while
THHN is for dry and damp locations.
4. When installing a 3-way switch circuit, how many traveler wires are
required between the two switches?
A. 1
B. 2
C. 3
D. 4
B. 2
Rationale: Two traveler wires are used to connect the two 3-way
switches, allowing control of a single light from two locations.
5. What is the minimum height above finished grade for outdoor service-
entrance conductors to a residential building?
A. 6 feet
B. 8 feet
C. 10 feet
D. 12 feet
C. 10 feet
Rationale: NEC 230.24 requires service-entrance conductors to
maintain at least 10 feet clearance above grade to prevent
accidental contact.
6. Which device provides overcurrent protection by automatically
opening a circuit during an overload?
A. Transformer
B. Contactor
C. Circuit breaker
D. Capacitor
C. Circuit breaker
, Rationale: Circuit breakers trip automatically when current exceeds
the rated value, protecting wiring and equipment.
7. In residential wiring, which conductor is normally used as the neutral?
A. Black
B. White
C. Red
D. Green
B. White
Rationale: NEC convention uses white (or gray) as the neutral
conductor in AC wiring.
8. What is the primary function of a GFCI outlet?
A. Provide surge protection
B. Prevent electrocution by detecting ground faults
C. Increase voltage supply
D. Reduce electrical noise
B. Prevent electrocution by detecting ground faults
Rationale: GFCI outlets detect current leakage to ground and trip to
prevent electrical shock.
9. According to the NEC, the minimum size copper grounding electrode
conductor for a 100-amp residential service is:
A. 6 AWG
B. 8 AWG
C. 10 AWG
D. 4 AWG
A. 6 AWG
Rationale: NEC Table 250.66 specifies 6 AWG copper for grounding a
100-amp service to a rod or electrode.
10. What is the allowable voltage drop for feeder circuits in a
residential installation?
A. 1%
B. 3%
C. 5%
D. 10%
B. 3%
