Question 1: What is the maximum allowable ampacity of a NO.6 AWG copper type THW conductor at an ambient temperature of 75 <sup>o</sup>C?
- 65 amperes
- 85 amperes
- 50 amperes
- 100 amperes
NEC Reference: NEC 310.16
JOURNEYMAN
NEC 2023
Journeyman Electrician Practice Test 3
Free online quiz test journeyman exam -3 includes NEC questions and basic electrical theory.
TOPICS COVERED
journeyman electrician
How this test works
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Look for absolute words like always / never — they often distinguish the right answer.
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You have 33 min for 15 questions. Skip tough ones and come back.
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After submitting you'll see every explanation and your NEC references.
Frequently Asked Questions
Yes — completely free with no account required. All questions include detailed explanations and NEC references.
Most state Journeyman exams have 80–100 questions covering NEC code, wiring methods, branch circuits, motor controls, and load calculations.
Most states require a 70–75% passing score. This practice test uses the same 70% pass threshold so you know where you stand.
Questions are written to the 2023 NEC. Check your state licensing board to confirm which edition your state has adopted.
15
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33 min
Time
70%
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Student Reviews 4.0 / 5 · 4 reviews
T
Tony Ruiz
Decent site but some of the questions feel a little outdated, not sure if they are updated for the 2023 NEC or an older edition. Still usefull for getting familiar with the code format. Would be better with more state-specific questions.
T
Tony Ruiz
Decent site but some of the questions feel a little outdated, not sure if they are updated for the 2023 NEC or an older edition. Still usefull for getting familiar with the code format. Would be better with more state-specific questions.
P
Priya M.
I've been studing for my journeyman for about 3 months and started using this site maybe 6 weeks ago. Big difference in how confident I feel going into the exam. The explainations after each question are really what sold me on it.
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Journeyman Electrician Practice Test 3 — Question List
Question 2: The power systems and branch circuits are grounded to limit ..............................
- excess Voltage
- excess current
Question 3: EMT shall be securely fastened in place at least every ..............
- 10 ft
- 8 ft
- 15 ft
- 20 ft
NEC Reference: NEC 358.30(A)
Question 4: How shall be the insulated or bare busbars mounted in panel boards?
- Loose
- Rigidly
- Snug
- Vertical to the floor
NEC Reference: NEC 408.51
Question 5: A single family dwelling unit has a branch circuit lighting load of 1,90,000 VA. What is the demand load of a dwelling unit after the demand factor applied?
- 190000
- 43950
- 61450
- 106000
Question 6: If the resistance of branch circuit conductor decreases, the circuit current will ...............
- decrease
- increase
- double
- remains same
Question 7: Pipe electrodes shall have resistance to ground not to exceed ............. ohms when used alone.
- 5
- 10
- 25
- 30
Question 8: The maximum voltage rating of plug fuse is .............. volts
- 120
- 36
- 240
- 420
NEC Reference: NEC 240.5
Question 9: The ampacity of branch circuit conductors between the controller and multi speed motor shall not be less than .............. percent of the current rating of the windings.
- 125
- 115
- 110
- 130
NEC Reference: NEC 430.21
Question 10: Automatic transfer switches rated not less than .................... shall be listed for emergency system use.
- 600 volts
- 500 volts
- 450 volts
- 700 volts
NEC Reference: NEC 700.5
Question 11: What is the current flow of a 3 kW heat strip connected to 120 volts ac power supply?
- 25 amperes
- 40 amperes
- 2.5 ampers
- 4 amperes
Question 12: If the resistance of two 12 AWG conductors of 175 feet is 0.4 ohms (0.2 ohms each). What is the power loss in a conductor when the current flow of conductor is 18 amperes?
- 129.6 watts
- 810 watts
- 550 watts
- 488 watts
NEC Reference: NEC 129.6
Question 13: Which of the following meter is used to measure resistances in the circuit?
- impedance meter
- capacitor voltage meter
- ohm meter
- megohmer
Question 14: The transformer output power is 136 VA, what is transformer input power if the transformer efficiency is 85%?
- 160 VA
- 115 VA
- 136 VA
- 144 VA
Question 15: What is the measuring unit of circuit resistance represented by a letter R?
- inductance
- impedance
- capacitance
- ohm
Decent site but some of the questions feel a little outdated, not sure if they are updated for the 2023 NEC or an older edition. Still usefull for getting familiar with the code format. Would be better with more state-specific questions.
Decent site but some of the questions feel a little outdated, not sure if they are updated for the 2023 NEC or an older edition. Still usefull for getting familiar with the code format. Would be better with more state-specific questions.
I've been studing for my journeyman for about 3 months and started using this site maybe 6 weeks ago. Big difference in how confident I feel going into the exam. The explainations after each question are really what sold me on it.
I've been studing for my journeyman for about 3 months and started using this site maybe 6 weeks ago. Big difference in how confident I feel going into the exam. The explainations after each question are really what sold me on it.