Thiết bị & Hệ thốngCâu 301 / 521
For a permanently installed swimming pool, what conductor is required for the equipotential bonding grid?
a.No. 10 AWG stranded copper
b.No. 8 AWG solid copper
c.No. 6 AWG solid aluminum
d.No. 12 AWG insulated copper
Giải thích
Section 680.26(B) requires the equipotential bonding to be established with a minimum No. 8 AWG solid copper conductor. Aluminum is not permitted in contact with pool structures, and conductors smaller than 8 AWG or stranded are not accepted for the bonding grid.
Trích dẫn luật: 2023 NEC §680.26Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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