Thiết bị & Hệ thốngCâu 341 / 521
How must the water in a permanently installed pool be bonded to the equipotential bonding system?
a.Through a conductive surface of at least 9 square inches in contact with the pool water
b.Through 1 square inch of conductive surface
c.Through 36 square inches of conductive surface
d.The pool water does not need to be bonded
Giải thích
Section 680.26(C) requires the pool water to be bonded using an adequate conductive surface exposed to the pool water having a total area of at least 9 square inches, such as a listed metal fitting. This ensures the water is at the same potential as the surrounding bonded parts.
Trích dẫn luật: 2023 NEC §680.26Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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