Maine Master Electrician Exam Newest
(2026 Update) Actual Practice Questions
– Set 100 Most Common Exam
Questions And Answers In Details 100%
Verified Exam
1. A feeder supplying a continuous load of 80A must have a minimum
ampacity of:
A. 80A
B. 90A
C. 100A
D. 125A
✔ Correct Answer: C. 100A (100A)
Explanation: Continuous loads must be calculated at 125% per NEC, so 80A
× 1.25 = 100A.
2. What is the minimum burial depth for PVC conduit under a residential
driveway?
A. 12 inches
B. 18 inches
C. 24 inches
D. 6 inches
✔ Correct Answer: B. 18 inches (18 inches)
Explanation: NEC Table 300.5 specifies 18 inches for PVC under residential
driveways.
3. In a dwelling, the minimum number of required small appliance branch
circuits is:
A. One
, B. Two
C. Three
D. Four
✔ Correct Answer: B. Two (Two)
Explanation: NEC requires at least two 20A small appliance circuits for
kitchen/dining.
4. What is the maximum number of disconnects allowed for a service?
A. 4
B. 6
C. 8
D. Unlimited
✔ Correct Answer: B. 6 (6)
Explanation: NEC allows up to six disconnects per service (six disconnect
rule).
5. A grounding electrode conductor connected to a rod electrode must be at
least:
A. #10 copper
B. #8 copper
C. #6 copper
D. #4 copper
✔ Correct Answer: C. #6 copper (#6 copper)
Explanation: NEC requires minimum #6 copper for rod grounding electrode.
6. What is the minimum working clearance in front of electrical equipment (0–
150V to ground)?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
✔ Correct Answer: B. 3 feet (3 feet)
Explanation: NEC Table 110.26 requires 3 ft clearance.
, 7. A 20A circuit must use a minimum conductor size of:
A. #14 AWG
B. #12 AWG
C. #10 AWG
D. #8 AWG
✔ Correct Answer: B. #12 AWG (#12 AWG)
Explanation: NEC limits #12 as minimum for 20A circuits.
8. GFCI protection is required for receptacles in:
A. Bedrooms
B. Living rooms
C. Bathrooms
D. Closets
✔ Correct Answer: C. Bathrooms (Bathrooms)
Explanation: NEC requires GFCI protection in bathrooms due to shock
hazard.
9. What is the minimum cover for direct-buried UF cable?
A. 6 inches
B. 12 inches
C. 24 inches
D. 18 inches
✔ Correct Answer: C. 24 inches (24 inches)
Explanation: NEC Table 300.5 requires 24 inches for direct burial.
10.A conductor is considered continuous if it runs for:
A. 1 hour
B. 2 hours
C. 3 hours
D. 4 hours
✔ Correct Answer: C. 3 hours (3 hours)
Explanation: NEC defines continuous load as 3 hours or more.
(2026 Update) Actual Practice Questions
– Set 100 Most Common Exam
Questions And Answers In Details 100%
Verified Exam
1. A feeder supplying a continuous load of 80A must have a minimum
ampacity of:
A. 80A
B. 90A
C. 100A
D. 125A
✔ Correct Answer: C. 100A (100A)
Explanation: Continuous loads must be calculated at 125% per NEC, so 80A
× 1.25 = 100A.
2. What is the minimum burial depth for PVC conduit under a residential
driveway?
A. 12 inches
B. 18 inches
C. 24 inches
D. 6 inches
✔ Correct Answer: B. 18 inches (18 inches)
Explanation: NEC Table 300.5 specifies 18 inches for PVC under residential
driveways.
3. In a dwelling, the minimum number of required small appliance branch
circuits is:
A. One
, B. Two
C. Three
D. Four
✔ Correct Answer: B. Two (Two)
Explanation: NEC requires at least two 20A small appliance circuits for
kitchen/dining.
4. What is the maximum number of disconnects allowed for a service?
A. 4
B. 6
C. 8
D. Unlimited
✔ Correct Answer: B. 6 (6)
Explanation: NEC allows up to six disconnects per service (six disconnect
rule).
5. A grounding electrode conductor connected to a rod electrode must be at
least:
A. #10 copper
B. #8 copper
C. #6 copper
D. #4 copper
✔ Correct Answer: C. #6 copper (#6 copper)
Explanation: NEC requires minimum #6 copper for rod grounding electrode.
6. What is the minimum working clearance in front of electrical equipment (0–
150V to ground)?
A. 2 feet
B. 3 feet
C. 4 feet
D. 5 feet
✔ Correct Answer: B. 3 feet (3 feet)
Explanation: NEC Table 110.26 requires 3 ft clearance.
, 7. A 20A circuit must use a minimum conductor size of:
A. #14 AWG
B. #12 AWG
C. #10 AWG
D. #8 AWG
✔ Correct Answer: B. #12 AWG (#12 AWG)
Explanation: NEC limits #12 as minimum for 20A circuits.
8. GFCI protection is required for receptacles in:
A. Bedrooms
B. Living rooms
C. Bathrooms
D. Closets
✔ Correct Answer: C. Bathrooms (Bathrooms)
Explanation: NEC requires GFCI protection in bathrooms due to shock
hazard.
9. What is the minimum cover for direct-buried UF cable?
A. 6 inches
B. 12 inches
C. 24 inches
D. 18 inches
✔ Correct Answer: C. 24 inches (24 inches)
Explanation: NEC Table 300.5 requires 24 inches for direct burial.
10.A conductor is considered continuous if it runs for:
A. 1 hour
B. 2 hours
C. 3 hours
D. 4 hours
✔ Correct Answer: C. 3 hours (3 hours)
Explanation: NEC defines continuous load as 3 hours or more.
