Question 1: What is the maximum voltage drop in branch conductor recommended by NEC ?
- 2 %
- 3 %
- 5 %
- 6 %
NEC_PRACTICE
NEC 2023
NEC Code Questions Practice Test-16
Take a Practice test on NEC Code Practice quiz questions - 16
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NEC Practice Tests
How this test works
Read each question carefully
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How to Use This Practice Test
This NEC Code Questions Practice Test-16 has 8 questions with detailed answers and NEC references. Take the full test, review every wrong answer, and look up the NEC article it references before moving on.
Tip: Mixed-format test — questions jump between topics just like the real exam. Don't spend more than 90 seconds on any one question.
- Topics covered: All NEC chapters — branch circuits, grounding, conductors, wiring methods, motors, and more.
- Passing score: Aim for 80%+ consistently before scheduling your exam.
- Questions: 8 multiple-choice, one correct answer each
8
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12 min
Time
70%
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TimeNEC Code Questions Practice Test-16 — Question List
Question 2: what is the minimum general lightening load required for 3500 square foot ware house as permitted by NEC ?
- 700 VA
- 3500 VA
- 7000 VA
- 4500 VA
NEC Reference: NEC 220.12
Question 3: If a 20 ampere AC snap switch is used to disconnect a 1.5 HP motor what must be the maximum full load current of a motor?
- 16 amperes
- 20 amperes
- 15 amperes
- 17 amperes
NEC Reference: NEC 430.109(C)(2)
Question 4: What is the maximum continuous load that can be connected to 240 volts 20 ampere branch circuit?
- 16 amperes
- 20 amperes
- 14 amperes
- 10 amperes
NEC Reference: NEC 210.20
Question 5: In a single family dwelling unit when four or more appliances are fastened in a place and connected to the same feeder then ....... percent demand factor can be applied in calculating total demand load.
- 75
- 85
- 83
- 90
Question 6: What is the the minimum size copper wire that can be used for outside overhead wiring, if the wire carries more than 600 volts?
- No. 6 AWG
- No. 8 AWG
- No. 10 AWG
- No. 12 AWG
NEC Reference: NEC 225.6(A)(2)
Question 7: What is the maximum allowable voltage between two adjacent snap switches are receptacles placed in a enclosure?
- 300 volts
- 240 volts
- 480 volts
- 120 volts
NEC Reference: NEC 404.8(B)
Question 8: Which of the following is the smallest size fixture wire allowed?
- No . 18 AWG
- No . 12 AWG
- No . 14 AWG
- No . 20 AWG
NEC Reference: NEC 410.54(B)
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