Services & Distribution第 49 / 110 题
A legally required standby system must supply its loads within what maximum time after loss of normal power?
a.60 seconds
b.10 seconds
c.30 seconds
d.120 seconds
解析
Legally required standby systems must be able to supply their loads within 60 seconds of a normal-source failure.
法律依据: 2023 NEC 701.12免费刷完整 110 道题库 — 无需注册。
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