Mạch nhánh & Đi dâyCâu 134 / 521
The width of the working space in front of electrical equipment must be at least the width of the equipment or what minimum, whichever is greater?
a.24 in
b.28 in
c.30 in
d.36 in
Giải thích
Section 110.26(A)(2) requires the working space width to be the width of the equipment or 30 in, whichever is greater. The space must also permit at least a 90-degree opening of equipment doors. 24 and 28 in are below the minimum; 36 in is more than required.
Trích dẫn luật: 2023 NEC §110.26(A)(2)Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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