Georgia Class I Electrical Contractor Exam
Newest (2026 Update) Actual Practice
Questions – Set 100 Most Common Exam
Questions And Answers In Details 100%
Verified Exam
1. What is the minimum burial depth for rigid metal conduit (RMC) under a
residential driveway according to the NEC?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
✔ Correct Answer: C (18 inches)
Explanation: NEC Table 300.5 requires a minimum cover of 18 inches for
RMC under residential driveways to ensure protection from physical
damage.
2. A 20-amp branch circuit supplies continuous lighting. What is the maximum
allowable load?
A. 16 amps
B. 18 amps
C. 20 amps
D. 24 amps
✔ Correct Answer: A (16 amps)
Explanation: Continuous loads must not exceed 80% of the circuit rating
(20A × 0.8 = 16A) per NEC 210.20(A).
3. What is the minimum size copper grounding electrode conductor for a 200-
amp service?
A. #8 AWG
, B. #6 AWG
C. #4 AWG
D. #2 AWG
✔ Correct Answer: B (#6 AWG)
Explanation: NEC Table 250.66 specifies #6 copper for grounding electrode
conductors connected to rod electrodes.
4. Which NEC article covers branch circuits?
A. Article 110
B. Article 210
C. Article 220
D. Article 250
✔ Correct Answer: B (Article 210)
Explanation: NEC Article 210 governs branch circuits, including ratings,
loads, and installation requirements.
5. What is the maximum number of 12 AWG conductors allowed in a 4-inch
square box 1.5 inches deep?
A. 6
B. 8
C. 9
D. 10
✔ Correct Answer: B (8)
Explanation: Box fill calculations per NEC 314.16 limit conductor count
based on cubic inch volume.
6. A motor draws 30A full-load current. What size branch circuit conductor is
required?
A. 30A
B. 36A
C. 37.5A
D. 40A
✔ Correct Answer: C (37.5A)
, Explanation: Conductors must be sized at 125% of motor FLC (30 × 1.25 =
37.5A) per NEC 430.22.
7. What type of conductor insulation is rated for wet locations?
A. NM
B. THHN
C. THWN
D. XHHW
✔ Correct Answer: C (THWN)
Explanation: THWN insulation is specifically rated for wet conditions.
8. What is the required GFCI protection for receptacles in bathrooms?
A. Optional
B. Required only for 20A
C. Required for all
D. Only for new construction
✔ Correct Answer: C (Required for all)
Explanation: NEC 210.8(A) requires GFCI protection for all bathroom
receptacles.
9. What is the minimum working clearance in front of electrical equipment
operating at 120V?
A. 24 inches
B. 30 inches
C. 36 inches
D. 48 inches
✔ Correct Answer: C (36 inches)
Explanation: NEC 110.26 requires a minimum of 3 feet clearance.
10.What is the purpose of bonding?
A. Increase voltage
B. Reduce resistance
C. Ensure electrical continuity
D. Increase current flow
Newest (2026 Update) Actual Practice
Questions – Set 100 Most Common Exam
Questions And Answers In Details 100%
Verified Exam
1. What is the minimum burial depth for rigid metal conduit (RMC) under a
residential driveway according to the NEC?
A. 6 inches
B. 12 inches
C. 18 inches
D. 24 inches
✔ Correct Answer: C (18 inches)
Explanation: NEC Table 300.5 requires a minimum cover of 18 inches for
RMC under residential driveways to ensure protection from physical
damage.
2. A 20-amp branch circuit supplies continuous lighting. What is the maximum
allowable load?
A. 16 amps
B. 18 amps
C. 20 amps
D. 24 amps
✔ Correct Answer: A (16 amps)
Explanation: Continuous loads must not exceed 80% of the circuit rating
(20A × 0.8 = 16A) per NEC 210.20(A).
3. What is the minimum size copper grounding electrode conductor for a 200-
amp service?
A. #8 AWG
, B. #6 AWG
C. #4 AWG
D. #2 AWG
✔ Correct Answer: B (#6 AWG)
Explanation: NEC Table 250.66 specifies #6 copper for grounding electrode
conductors connected to rod electrodes.
4. Which NEC article covers branch circuits?
A. Article 110
B. Article 210
C. Article 220
D. Article 250
✔ Correct Answer: B (Article 210)
Explanation: NEC Article 210 governs branch circuits, including ratings,
loads, and installation requirements.
5. What is the maximum number of 12 AWG conductors allowed in a 4-inch
square box 1.5 inches deep?
A. 6
B. 8
C. 9
D. 10
✔ Correct Answer: B (8)
Explanation: Box fill calculations per NEC 314.16 limit conductor count
based on cubic inch volume.
6. A motor draws 30A full-load current. What size branch circuit conductor is
required?
A. 30A
B. 36A
C. 37.5A
D. 40A
✔ Correct Answer: C (37.5A)
, Explanation: Conductors must be sized at 125% of motor FLC (30 × 1.25 =
37.5A) per NEC 430.22.
7. What type of conductor insulation is rated for wet locations?
A. NM
B. THHN
C. THWN
D. XHHW
✔ Correct Answer: C (THWN)
Explanation: THWN insulation is specifically rated for wet conditions.
8. What is the required GFCI protection for receptacles in bathrooms?
A. Optional
B. Required only for 20A
C. Required for all
D. Only for new construction
✔ Correct Answer: C (Required for all)
Explanation: NEC 210.8(A) requires GFCI protection for all bathroom
receptacles.
9. What is the minimum working clearance in front of electrical equipment
operating at 120V?
A. 24 inches
B. 30 inches
C. 36 inches
D. 48 inches
✔ Correct Answer: C (36 inches)
Explanation: NEC 110.26 requires a minimum of 3 feet clearance.
10.What is the purpose of bonding?
A. Increase voltage
B. Reduce resistance
C. Ensure electrical continuity
D. Increase current flow
