Lập kế hoạch & Dự toánCâu 371 / 521
When four or more fastened-in-place appliances (other than the range, dryer, space heating, and air conditioning) are on the same feeder in a dwelling, what demand factor may be applied to their total nameplate load?
a.100%
b.50%
c.80%
d.75%
Giải thích
A demand factor of 75% is permitted where four or more such fastened-in-place appliances are served. With three or fewer, no reduction applies, so 100% would be used only in that case.
Trích dẫn luật: 2023 NEC §220.53Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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