Lập kế hoạch & Dự toánCâu 385 / 521
What is the primary purpose of a single-line (one-line) diagram?
a.To show every individual conductor in the building
b.To represent the overall power distribution system using single lines
c.To detail the internal wiring of each device
d.To show the furniture layout of the floor
Giải thích
A one-line diagram uses single lines and standardized symbols to show the overall flow of power from the service through switchgear, panels, and major equipment. It intentionally omits individual conductor and device wiring detail.
Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Using the optional method, a dwelling's 220.82(B) other loads (general lighting, appliances, etc., excluding heating/AC) sum to 40 kVA. What is the calculated demand for that portion?
- In the normal permit and inspection sequence, when is the final electrical inspection performed?
- Who is normally responsible for obtaining the electrical permit for a project?
- What information does a panel schedule provide?
- For a branch circuit, what maximum voltage drop does the NEC recommend for reasonable efficiency?
- A dwelling's total calculated load is 44,000 VA on a 240 V service. What is the smallest standard service rating that will carry this load?
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