HAWAII JOURNEYMAN ELECTRICIAN EXAM
NEWEST 2026 ACTUAL EXAM 150
QUESTIONS AND CORRECT DETAILED
ANSWERS| FREE PDF.
Section 1: General Electrical Theory and Calculations
Q1: What is the formula for Ohm's Law?
A) P = I x E
B) E = I x R
C) I = E / R
D) Both B and C
Answer: D
Q2: A circuit has 240 volts and a resistance of 12 ohms. What is the current flow?
A) 10 amps
B) 20 amps
C) 30 amps
D) 2 amps
Answer: B
*
Q3: What is the power consumed by a 120-volt circuit drawing 15 amps?
A) 1500 Watts
B) 1800 Watts
,C) 2000 Watts
D) 1200 Watts
Answer: B
*Explanation: P = E x I = 120V x 15A = 1800 Watts.*
Q4: In a purely resistive AC circuit, the power factor is:
A) 0
B) 0.5
C) 0.8
D) 1.0
Answer: D
Q5: What is the total resistance of three 30-ohm resistors connected in parallel?
A) 90 ohms
B) 10 ohms
C) 15 ohms
D) 30 ohms
Answer: B
*Explanation: R_Total = 1 / (1/R1 + 1/R2 + 1/R3) = 1 / (1/30 + 1/30 + 1/30) = 10 ohms.*
Q6: The total capacitance of two 10-microfarad capacitors connected in series is:
A) 20 µF
B) 10 µF
C) 5 µF
D) 2 µF
Answer: C
*Explanation: Capacitors in series combine like resistors in parallel. C_Total = 1 / (1/10 +
1/10) = 5 µF.*
Q7: What is the approximate full-load current of a 5 HP, 230V, single-phase motor?
A) 15 Amps
B) 28 Amps
C) 42 Amps
D) 56 Amps
,Answer: B
*Explanation: Per NEC Table 430.248, a 5 HP single-phase 230V motor has an FLC of 28
Amps.*
Q8: What is the voltage to ground of the "high leg" or "wild leg" on a 120/240V 3-phase
4-wire Delta system?
A) 120V
B) 208V
C) 240V
D) 277V
Answer: B
Q9: The square root of 3 (1.732) is used in three-phase calculations to find:
A) Phase current from line current in Wye
B) Line voltage from phase voltage in Delta
C) Power in a balanced three-phase system
D) All of the above
Answer: D
*Explanation: 1.732 is the multiplier used to convert phase values to line values and to
calculate three-phase power.*
Q10: Voltage drop for a branch circuit is recommended by the NEC Fine Print Note
(FPN) not to exceed:
A) 2%
B) 3%
C) 5%
D) 10%
Answer: B
Q11: A transformer has a primary voltage of 480V and a secondary voltage of 120V.
What is the turns ratio?
A) 1:4
B) 4:1
C) 1:2
D) 2:1
, Answer: B
*Explanation: Turns Ratio = Primary Voltage / Secondary Voltage = 480/120 = 4:1 (Step-
down).*
Q12: What is the resistance of the heating element in a 2400W, 120V water heater?
A) 6 ohms
B) 12 ohms
C) 20 ohms
D) 24 ohms
Answer: A
*Explanation: First, find Current (I = P/E = 2400/120 = 20A). Then R = E/I = 120V / 20A =
6 ohms.*
Q13: A 15-amp circuit breaker is allowed to carry a continuous load of maximum:
A) 10 Amps
B) 12 Amps
C) 15 Amps
D) 16 Amps
Answer: B
*Explanation: Continuous loads are limited to 80% of the breaker rating. 15A x 0.80 = 12
Amps.*
Q14: In a 120/240V single-phase system, the neutral carries only the ______ current.
A) Total
B) Unbalanced
C) Phase A
D) Phase B
Answer: B
Q15: A device that converts electrical energy into mechanical energy is a:
A) Generator
B) Transformer
C) Motor
D) Rectifier
Answer: C
NEWEST 2026 ACTUAL EXAM 150
QUESTIONS AND CORRECT DETAILED
ANSWERS| FREE PDF.
Section 1: General Electrical Theory and Calculations
Q1: What is the formula for Ohm's Law?
A) P = I x E
B) E = I x R
C) I = E / R
D) Both B and C
Answer: D
Q2: A circuit has 240 volts and a resistance of 12 ohms. What is the current flow?
A) 10 amps
B) 20 amps
C) 30 amps
D) 2 amps
Answer: B
*
Q3: What is the power consumed by a 120-volt circuit drawing 15 amps?
A) 1500 Watts
B) 1800 Watts
,C) 2000 Watts
D) 1200 Watts
Answer: B
*Explanation: P = E x I = 120V x 15A = 1800 Watts.*
Q4: In a purely resistive AC circuit, the power factor is:
A) 0
B) 0.5
C) 0.8
D) 1.0
Answer: D
Q5: What is the total resistance of three 30-ohm resistors connected in parallel?
A) 90 ohms
B) 10 ohms
C) 15 ohms
D) 30 ohms
Answer: B
*Explanation: R_Total = 1 / (1/R1 + 1/R2 + 1/R3) = 1 / (1/30 + 1/30 + 1/30) = 10 ohms.*
Q6: The total capacitance of two 10-microfarad capacitors connected in series is:
A) 20 µF
B) 10 µF
C) 5 µF
D) 2 µF
Answer: C
*Explanation: Capacitors in series combine like resistors in parallel. C_Total = 1 / (1/10 +
1/10) = 5 µF.*
Q7: What is the approximate full-load current of a 5 HP, 230V, single-phase motor?
A) 15 Amps
B) 28 Amps
C) 42 Amps
D) 56 Amps
,Answer: B
*Explanation: Per NEC Table 430.248, a 5 HP single-phase 230V motor has an FLC of 28
Amps.*
Q8: What is the voltage to ground of the "high leg" or "wild leg" on a 120/240V 3-phase
4-wire Delta system?
A) 120V
B) 208V
C) 240V
D) 277V
Answer: B
Q9: The square root of 3 (1.732) is used in three-phase calculations to find:
A) Phase current from line current in Wye
B) Line voltage from phase voltage in Delta
C) Power in a balanced three-phase system
D) All of the above
Answer: D
*Explanation: 1.732 is the multiplier used to convert phase values to line values and to
calculate three-phase power.*
Q10: Voltage drop for a branch circuit is recommended by the NEC Fine Print Note
(FPN) not to exceed:
A) 2%
B) 3%
C) 5%
D) 10%
Answer: B
Q11: A transformer has a primary voltage of 480V and a secondary voltage of 120V.
What is the turns ratio?
A) 1:4
B) 4:1
C) 1:2
D) 2:1
, Answer: B
*Explanation: Turns Ratio = Primary Voltage / Secondary Voltage = 480/120 = 4:1 (Step-
down).*
Q12: What is the resistance of the heating element in a 2400W, 120V water heater?
A) 6 ohms
B) 12 ohms
C) 20 ohms
D) 24 ohms
Answer: A
*Explanation: First, find Current (I = P/E = 2400/120 = 20A). Then R = E/I = 120V / 20A =
6 ohms.*
Q13: A 15-amp circuit breaker is allowed to carry a continuous load of maximum:
A) 10 Amps
B) 12 Amps
C) 15 Amps
D) 16 Amps
Answer: B
*Explanation: Continuous loads are limited to 80% of the breaker rating. 15A x 0.80 = 12
Amps.*
Q14: In a 120/240V single-phase system, the neutral carries only the ______ current.
A) Total
B) Unbalanced
C) Phase A
D) Phase B
Answer: B
Q15: A device that converts electrical energy into mechanical energy is a:
A) Generator
B) Transformer
C) Motor
D) Rectifier
Answer: C
