Thiết bị & Hệ thốngCâu 324 / 521
What does the NEC require regarding testing of emergency systems?
a.No testing once commissioned
b.Testing only every 10 years
c.Periodic testing on a scheduled basis under simulated or maximum load
d.Testing performed only by the utility
Giải thích
Section 700.3 requires emergency systems to be tested periodically on a schedule acceptable to the authority having jurisdiction to ensure they are maintained in proper operating condition, including a witnessed acceptance test at installation. Leaving a system untested after commissioning would violate this requirement.
Trích dẫn luật: 2023 NEC §700.3Luyện miễn phí toàn bộ 521 câu hỏi — không cần đăng ký.
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