Hawaii Journeyman Electrician Exam
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. A 120 V circuit has a resistance of 24 ohms. What is the current?
A. 2 A
B. 5 A
C. 10 A
D. 24 A
Rationale: Using Ohm’s Law (I = V ÷ R), 120 ÷ 24 = 5 amperes. This is a
direct application of basic circuit theory used in journeyman-level
calculations.
2. What is the primary purpose of a ground fault circuit interrupter (GFCI)?
A. Increase voltage stability
B. Protect personnel from shock by detecting leakage current
C. Reduce energy consumption
D. Balance circuit loads
Rationale: A GFCI monitors the difference between hot and neutral
conductors and trips when imbalance indicates leakage current, typically
through a person.
3. The minimum burial depth for residential branch circuits in PVC conduit is
generally:
A. 6 inches
B. 12 inches
C. 18 inches
D. 36 inches
, Rationale: NEC Table 300.5 typically requires 18 inches for residential PVC-
encased branch circuits under standard conditions.
4. What device protects against overcurrent conditions?
A. Transformer
B. Circuit breaker
C. Load center
D. Busbar
Rationale: Circuit breakers interrupt current flow when amperage exceeds
rated limits, protecting conductors and equipment.
5. The resistance of a conductor increases when:
A. Temperature decreases
B. Length decreases
C. Cross-sectional area increases
D. Temperature increases
Rationale: As temperature rises, conductor resistivity increases, causing
higher resistance.
6. What is the function of a transformer?
A. Convert AC to DC
B. Store electrical energy
C. Step voltage up or down using electromagnetic induction
D. Limit current flow
Rationale: Transformers transfer energy between circuits via inductive
coupling, changing voltage levels while maintaining frequency.
7. A 240 V load draws 10 A. What is the power?
A. 1200 W
B. 2400 W
C. 240 W
D. 24 W
Rationale: Power (P = V × I) gives 240 × 10 = 2400 watts.
, 8. Which color is typically used for grounded neutral conductors?
A. Green
B. Red
C. White
D. Black
Rationale: NEC requires white or gray insulation for grounded (neutral)
conductors.
9. A series circuit has:
A. Multiple paths for current
B. Same voltage across all components
C. One path for current flow
D. No resistance
Rationale: In series circuits, current flows through a single continuous
path.
10.What does NEC primarily regulate?
A. HVAC systems
B. Electrical installations and safety standards
C. Plumbing systems
D. Structural design
Rationale: The National Electrical Code governs safe installation of
electrical wiring and equipment.
11.The unit of electrical resistance is:
A. Ampere
B. Volt
C. Ohm
D. Watt
Rationale: Ohms measure opposition to current flow in a circuit.
12.A 1 kW load at 120 V draws approximately:
A. 5 A
Questions And Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
1. A 120 V circuit has a resistance of 24 ohms. What is the current?
A. 2 A
B. 5 A
C. 10 A
D. 24 A
Rationale: Using Ohm’s Law (I = V ÷ R), 120 ÷ 24 = 5 amperes. This is a
direct application of basic circuit theory used in journeyman-level
calculations.
2. What is the primary purpose of a ground fault circuit interrupter (GFCI)?
A. Increase voltage stability
B. Protect personnel from shock by detecting leakage current
C. Reduce energy consumption
D. Balance circuit loads
Rationale: A GFCI monitors the difference between hot and neutral
conductors and trips when imbalance indicates leakage current, typically
through a person.
3. The minimum burial depth for residential branch circuits in PVC conduit is
generally:
A. 6 inches
B. 12 inches
C. 18 inches
D. 36 inches
, Rationale: NEC Table 300.5 typically requires 18 inches for residential PVC-
encased branch circuits under standard conditions.
4. What device protects against overcurrent conditions?
A. Transformer
B. Circuit breaker
C. Load center
D. Busbar
Rationale: Circuit breakers interrupt current flow when amperage exceeds
rated limits, protecting conductors and equipment.
5. The resistance of a conductor increases when:
A. Temperature decreases
B. Length decreases
C. Cross-sectional area increases
D. Temperature increases
Rationale: As temperature rises, conductor resistivity increases, causing
higher resistance.
6. What is the function of a transformer?
A. Convert AC to DC
B. Store electrical energy
C. Step voltage up or down using electromagnetic induction
D. Limit current flow
Rationale: Transformers transfer energy between circuits via inductive
coupling, changing voltage levels while maintaining frequency.
7. A 240 V load draws 10 A. What is the power?
A. 1200 W
B. 2400 W
C. 240 W
D. 24 W
Rationale: Power (P = V × I) gives 240 × 10 = 2400 watts.
, 8. Which color is typically used for grounded neutral conductors?
A. Green
B. Red
C. White
D. Black
Rationale: NEC requires white or gray insulation for grounded (neutral)
conductors.
9. A series circuit has:
A. Multiple paths for current
B. Same voltage across all components
C. One path for current flow
D. No resistance
Rationale: In series circuits, current flows through a single continuous
path.
10.What does NEC primarily regulate?
A. HVAC systems
B. Electrical installations and safety standards
C. Plumbing systems
D. Structural design
Rationale: The National Electrical Code governs safe installation of
electrical wiring and equipment.
11.The unit of electrical resistance is:
A. Ampere
B. Volt
C. Ohm
D. Watt
Rationale: Ohms measure opposition to current flow in a circuit.
12.A 1 kW load at 120 V draws approximately:
A. 5 A
