Question 1: What is the adjustment ampacity of a 3/0 THWN conductors in a wet location, if the raceway contains seven conductors in it?
- 122.5 amperes
- 125.5 amperes
- 140 amperes
- 133 amperes
NEC Reference: NEC 310.15(B)(16)
JOURNEYMAN
NEC 2023
Journeyman Electrician Practice Test 39
Free Online Practice Test on Journeyman Electrician Exam - 39
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Frequently Asked Questions
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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.
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TimeJourneyman Electrician Practice Test 39 — Question List
Question 2: At which of the following percentage the demand factor for six house hold electric cloth dryers is calculated?
- 80%
- 75%
- 70%
- 78%
NEC Reference: NEC 220.54
Question 3: What is the unit load per square foot in volt ampere for a restaurant?
- 1 VA
- 2 VA
- 3 VA
- 1 1/2 VA
NEC Reference: NEC 220.12
Question 4: What is permissible voltage drop in percentage for combination of both feeders and branch circuit conductors?
- 2 %
- 3 %
- 5 %
- 8 %
NEC Reference: NEC 215.2(A)(4)
Question 5: What is the minimum rated ampacity of each power supply circuit that supplies 30 volts lighting circuit?
- 30 Amperes
- 20 Amperes
- 25 Amperes
- 35 Amperes
NEC Reference: NEC 411.2
Question 6: For inductive rating the branch circuits must be sized according to wattage rating not VA rating.
- True
- Flase
Question 7: The overall length of the power supply cards for mobile homes shall not be less than ………… feet
- 20 feet
- 36 1/2 feet
- 25 feet
- 28 1/2 feet
NEC Reference: NEC 550.10(D)
Question 8: A device which converts AC input into pulsating DC output is called as ………………
- Rectifier
- Inverter
- clamper
- clipper
Question 9: Which of the following is not a standard fuse rating of a electrical fuse as per NEC?
- 45
- 50
- 55
- 60
Question 10: A lamp operating at 120 volts has a resistance of 480 ohms. What is the wattage of the lamp?
- 30 watts
- 25 watts
- 20 watts
- 0.25 watts
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