Thiết bị & Hệ thốngCâu 337 / 521
The equipotential bonding for perimeter surfaces around a permanently installed pool must extend how far from the inside walls of the pool?
a.3 feet horizontally around the inside and outside pool walls
b.5 feet
c.10 feet
d.1 foot
Giải thích
Section 680.26(B)(2) requires perimeter-surface bonding to extend for 3 feet horizontally beyond the inside walls of the pool and include walkways and surfaces within that zone. Larger distances such as 5 or 10 feet are not required by the equipotential-bonding rule.
Trích dẫn luật: 2023 NEC §680.26Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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