Lập kế hoạch & Dự toánCâu 407 / 521
Using the optional method, a dwelling's 220.82(B) loads compute to 19,280 VA, plus 5,000 VA of air conditioning at 100%. On a 240 V service (about 101 A), what is the minimum standard service size?
a.100 A
b.150 A
c.175 A
d.125 A
Giải thích
Total = 19,280 + 5,000 = 24,280 VA; 24,280 ÷ 240 = 101 A. Since the demand exceeds 100 A, the next standard size, 125 A, is required. A 100 A service would be slightly undersized.
Trích dẫn luật: 2023 NEC §220.82Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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