Question 5064 of 749 · Maryland Journeyperson Electrician Exam
In NEC 2020 and NEC 2023, grounding requirements specific to systems over 1000 V are located in
Exactly one answer is correct.
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Correct answer to question 5064
- D: Part X of Article 250
Explanation
In these editions the grounding of systems and circuits over 1000 V is covered in Part X of Article 250. NEC 2026 relocated that material into a new article.
More questions: Grounding and Bonding
- 5001At a building or structure, which of the permitted grounding electrodes must be bonded together to form the grounding electrode system?
- 5002A metal underground water pipe qualifies as a grounding electrode only if it is in direct contact with the earth for at least what length?
- 5003When a metal underground water pipe is used as a grounding electrode, what else does the Code require?
- 5004Under the general rule, interior metal water piping located more than what distance from its point of entrance may NOT be used to interconnect electrodes that are part of the grounding electrode system?
- 5005A concrete-encased electrode made of bare copper conductor must be at least 20 ft long and not smaller than what size?
- 5006A concrete-encased electrode must be covered by at least how much concrete?