Services & DistributionCâu 32 / 110
A service uses #2/0 Cu ungrounded conductors. What is the minimum copper grounding electrode conductor?
a.#8 AWG
b.#6 AWG
c.#2 AWG
d.#4 AWG
Giải thích
For service conductors over 1/0 through 3/0 Cu, the table requires a #4 Cu grounding electrode conductor.
Trích dẫn luật: 2023 NEC Table 250.66Luyện miễn phí toàn bộ 110 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
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