Theory & Safety第 118 / 120 题
Entrances at each end of the working space are generally required for equipment rated at least what value and over 6 feet wide?
a.1,000 amperes
b.800 amperes
c.1,200 amperes
d.600 amperes
解析
Equipment rated 1,200 amperes or more and over 6 feet wide containing overcurrent, switching or control devices needs an entrance at each end of the working space so a worker is never trapped behind an arcing fault. The 1,000-ampere threshold belongs to service ground-fault protection, and 800 amperes is the ceiling for the next-standard-size overcurrent rule.
法律依据: 2023 NEC §110.26(C)(2)免费刷完整 120 道题库 — 无需注册。
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