Core TradesCâu 135 / 700
For a 120/240-volt panelboard with no exposed live parts on the opposite side (Condition 1), what is the MINIMUM required clear working depth in front of the equipment?
a.24 inches
b.36 inches
c.30 inches
d.42 inches
Giải thích
Condition 1 requires a minimum clear working depth of 36 inches (3 feet) in front of the equipment so a worker can operate and service it safely. The working space must also be at least 30 inches wide and provide 6.5 feet of headroom. 24 and 30 inches are less than the required depth.
Trích dẫn luật: 2025 CA Electrical Code, Art. 110.26Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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