Core TradesCâu 79 / 700
An electrical panel is being installed. Regarding circuit identification, the code requires that:
a.Only the main breaker be labeled
b.Each circuit be legibly identified as to its purpose or use
c.Labels be optional if the electrician remembers the layout
d.Only 240-volt circuits be identified
Giải thích
Every circuit and circuit modification must be legibly and durably marked at the panel to identify its purpose, so anyone can safely identify and de-energize circuits later. Labeling only the main or only certain circuits, or relying on memory, does not meet the identification requirement.
Trích dẫn luật: 2025 CA Electrical Code (based on NEC)Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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