Question 1
Which OSHA standard governs general electrical safety-related work practices in the workplace?
Correct Answer:
29 CFR 1910 Subpart S
Question 2
According to NFPA 70E, what is the minimum arc-rated PPE category required when working on energized 480 V equipment within the restricted approach boundary if the incident energy is 8 cal/cm2?
Correct Answer:
PPE Category 2
Question 3
What is the primary purpose of a lockout/tagout (LOTO) procedure?
Correct Answer:
To isolate hazardous energy sources before servicing equipment
Question 4
Ohm's law states that current in a DC circuit is equal to:
Correct Answer:
Voltage divided by resistance
Question 5
What is the power dissipated by a 240 V circuit drawing 20 A at unity power factor?
Correct Answer:
4,800 W
Question 1
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About this Exam

Prepare with the NCCER Electrical Practice Questions - NCCER Electrical Commercial Electrician Exam practice quiz. This question bank includes 100 questions covering circuit, conductor, minimum, motor, and protection. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NCCER Electrical Practice Questions - NCCER Electrical Commercial Electrician Exam

This practice set contains 100 questions from the matching question bank and focuses on circuit, conductor, minimum, motor, and protection. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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