Thiết bị & Hệ thốngCâu 325 / 521
What capacity must an emergency system power source have?
a.Adequate capacity to carry all emergency loads simultaneously
b.50% of the connected emergency load
c.Only the largest single load
d.No minimum capacity is specified
Giải thích
Section 700.4 requires the emergency source to have adequate capacity and rating to supply all loads that will operate simultaneously. Sizing for only a fraction of the load or the largest single load would leave emergency loads unsupplied during an outage.
Trích dẫn luật: 2023 NEC §700.4Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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