Dịch vụ & Phân phốiCâu 17 / 521
At the 75 C column of Table 310.16, what is the ampacity of a 1/0 AWG copper conductor?
a.130 A
b.150 A
c.170 A
d.175 A
Giải thích
Table 310.16 lists 150 A for 1/0 copper at 75 C. 130 A is 1 AWG, 170 A is the 90 C value for 1/0, and 175 A is 2/0 copper at 75 C.
Trích dẫn luật: 2023 NEC §310.16Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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- Where two rod electrodes are used to meet the supplemental-electrode rule, what is the minimum spacing between them?
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