Dịch vụ & Phân phốiCâu 41 / 521
What is the minimum service disconnecting means rating for a one-family dwelling?
a.60 A
b.150 A
c.125 A
d.100 A
Giải thích
Per 230.79(C), a one-family dwelling service disconnect must be rated at least 100 A, 3-wire. 60 A is below the minimum, and 125 A/150 A exceed the required minimum.
Trích dẫn luật: 2023 NEC §230.79(C)Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A range has a Column C demand of 8 kW. What is the maximum neutral demand load for that range?
- Under the optional dwelling calculation, how are the general loads (other than heating/AC) treated?
- A dwelling's general lighting plus small-appliance/laundry load totals 13,500 VA. Using the standard demand factors (first 3,000 VA at 100%, remainder at 35%), what is the demand?
- The optional feeder/service calculation of 220.84 for a multifamily dwelling may be used only when which condition is met?
- A dwelling has 10 kW of electric heat and a 5 kW air conditioner that never run at the same time. What load is included in the calculation?
- Service-entrance conductors must supply a computed load of 160 A continuous. What minimum conductor ampacity is required per 230.42?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB C-10 Electrical Trade Examination · Quy trình kiểm tra