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Hawaii Maintenance Electrician
Examination Advanced 100-Question
Practice Exam 2026 | Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. A 120-volt branch circuit supplies a continuous load of 16 amperes. What is
the minimum branch-circuit ampere rating required when applying the
standard 125% continuous-load calculation?
A. 16 A
B. 18 A
C. 20 A
D. 25 A
Answer: 20 A
Rationale: The calculated continuous load is 16 A × 125% = 20 A. The branch
circuit must therefore be rated at least 20 amperes, subject to all applicable NEC
requirements.
2. A 120/240-volt single-phase feeder supplies a continuous load of 32
amperes. What minimum ampacity is required for the conductors based
solely on the continuous-load calculation?
A. 32 A
B. 36 A
,C. 40 A
D. 45 A
Answer: 40 A
Rationale: Continuous loads are generally calculated at 125%. Thus, 32 A × 1.25
= 40 A.
3. A maintenance shop has a 12-ampere continuous load and a 20-ampere
noncontinuous load on the same 120-volt circuit. What is the calculated
minimum circuit load?
A. 25 A
B. 30 A
C. 32 A
D. 40 A
Answer: 35 A
Rationale: The continuous portion is 12 × 125% = 15 A. Adding the 20-A
noncontinuous load gives 15 + 20 = 35 A.
4. A 240-volt resistance heater is rated 4,800 watts. What is its operating
current?
A. 10 A
B. 15 A
C. 20 A
D. 25 A
Answer: 20 A
Rationale: For a resistive load, I = P ÷ V. Therefore, 4,800 W ÷ 240 V = 20 A.
5. A 240-volt, 6,000-watt heater operates continuously. Using a 125%
continuous-load factor, what minimum ampacity is required for the circuit?
,A. 20 A
B. 25 A
C. 30 A
D. 35 A
Answer: 31.25 A
Rationale: The heater draws 6,000 ÷ 240 = 25 A. Applying 125% gives 25 × 1.25 =
31.25 A. The actual conductor and overcurrent-device selection must then follow
applicable NEC requirements and standard ratings.
6. A 120-volt circuit supplies two continuous loads of 8 A and 6 A plus a 5-A
noncontinuous load. What is the calculated load?
A. 19 A
B. 22.5 A
C. 23 A
D. 25 A
Answer: 22.5 A
Rationale: Continuous load = (8 + 6) × 125% = 17.5 A. Add the 5-A noncontinuous
load: 17.5 + 5 = 22.5 A.
7. A 120-volt, 20-ampere branch circuit has a calculated continuous load of 15
amperes. What percentage of the circuit rating is the continuous load
before applying the 125% calculation?
A. 50%
B. 60%
C. 75%
D. 80%
Answer: 75%
Rationale: 15 A ÷ 20 A = 0.75, or 75%. Applying the 125% continuous-load rule
results in 18.75 A.
, 8. A 120-volt load draws 18 amperes. Approximately how much apparent
power does it consume?
A. 1.08 kVA
B. 1.80 kVA
C. 2.16 kVA
D. 3.60 kVA
Answer: 2.16 kVA
Rationale: Apparent power for a single-phase load is VA = V × A. Thus, 120 × 18
= 2,160 VA, or 2.16 kVA.
9. A single-phase 240-volt motor load draws 12 amperes at a power factor of
0.80. What is its approximate real power?
A. 1.92 kW
B. 2.30 kW
C. 2.88 kW
D. 3.60 kW
Answer: 2.304 kW
Rationale: Real power is P = V × I × PF. Therefore, 240 × 12 × 0.80 = 2,304 W, or
2.304 kW.
10.A balanced three-phase load operates at 208 volts line-to-line, draws 20
amperes, and has a power factor of 0.90. What is the approximate real
power?
A. 4.32 kW
B. 5.20 kW
C. 6.48 kW
D. 7.49 kW
Answer: 6.48 kW
Hawaii Maintenance Electrician
Examination Advanced 100-Question
Practice Exam 2026 | Questions &
Answers with Detailed Rationales |
Complete Exam Prep & Study Guide
1. A 120-volt branch circuit supplies a continuous load of 16 amperes. What is
the minimum branch-circuit ampere rating required when applying the
standard 125% continuous-load calculation?
A. 16 A
B. 18 A
C. 20 A
D. 25 A
Answer: 20 A
Rationale: The calculated continuous load is 16 A × 125% = 20 A. The branch
circuit must therefore be rated at least 20 amperes, subject to all applicable NEC
requirements.
2. A 120/240-volt single-phase feeder supplies a continuous load of 32
amperes. What minimum ampacity is required for the conductors based
solely on the continuous-load calculation?
A. 32 A
B. 36 A
,C. 40 A
D. 45 A
Answer: 40 A
Rationale: Continuous loads are generally calculated at 125%. Thus, 32 A × 1.25
= 40 A.
3. A maintenance shop has a 12-ampere continuous load and a 20-ampere
noncontinuous load on the same 120-volt circuit. What is the calculated
minimum circuit load?
A. 25 A
B. 30 A
C. 32 A
D. 40 A
Answer: 35 A
Rationale: The continuous portion is 12 × 125% = 15 A. Adding the 20-A
noncontinuous load gives 15 + 20 = 35 A.
4. A 240-volt resistance heater is rated 4,800 watts. What is its operating
current?
A. 10 A
B. 15 A
C. 20 A
D. 25 A
Answer: 20 A
Rationale: For a resistive load, I = P ÷ V. Therefore, 4,800 W ÷ 240 V = 20 A.
5. A 240-volt, 6,000-watt heater operates continuously. Using a 125%
continuous-load factor, what minimum ampacity is required for the circuit?
,A. 20 A
B. 25 A
C. 30 A
D. 35 A
Answer: 31.25 A
Rationale: The heater draws 6,000 ÷ 240 = 25 A. Applying 125% gives 25 × 1.25 =
31.25 A. The actual conductor and overcurrent-device selection must then follow
applicable NEC requirements and standard ratings.
6. A 120-volt circuit supplies two continuous loads of 8 A and 6 A plus a 5-A
noncontinuous load. What is the calculated load?
A. 19 A
B. 22.5 A
C. 23 A
D. 25 A
Answer: 22.5 A
Rationale: Continuous load = (8 + 6) × 125% = 17.5 A. Add the 5-A noncontinuous
load: 17.5 + 5 = 22.5 A.
7. A 120-volt, 20-ampere branch circuit has a calculated continuous load of 15
amperes. What percentage of the circuit rating is the continuous load
before applying the 125% calculation?
A. 50%
B. 60%
C. 75%
D. 80%
Answer: 75%
Rationale: 15 A ÷ 20 A = 0.75, or 75%. Applying the 125% continuous-load rule
results in 18.75 A.
, 8. A 120-volt load draws 18 amperes. Approximately how much apparent
power does it consume?
A. 1.08 kVA
B. 1.80 kVA
C. 2.16 kVA
D. 3.60 kVA
Answer: 2.16 kVA
Rationale: Apparent power for a single-phase load is VA = V × A. Thus, 120 × 18
= 2,160 VA, or 2.16 kVA.
9. A single-phase 240-volt motor load draws 12 amperes at a power factor of
0.80. What is its approximate real power?
A. 1.92 kW
B. 2.30 kW
C. 2.88 kW
D. 3.60 kW
Answer: 2.304 kW
Rationale: Real power is P = V × I × PF. Therefore, 240 × 12 × 0.80 = 2,304 W, or
2.304 kW.
10.A balanced three-phase load operates at 208 volts line-to-line, draws 20
amperes, and has a power factor of 0.90. What is the approximate real
power?
A. 4.32 kW
B. 5.20 kW
C. 6.48 kW
D. 7.49 kW
Answer: 6.48 kW
