Services, Grounding & Bonding第 52 / 120 题
What is the minimum service disconnecting means rating for a one-family dwelling?
a.60 amperes
b.100 amperes
c.125 amperes
d.200 amperes
解析
A one-family dwelling service disconnect must be rated at least 100 amperes, 3-wire. The 60-ampere minimum applies to certain limited installations and older code cycles, while 125 and 200 amperes are common design choices but exceed the code minimum.
法律依据: 2023 NEC §230.79(C)免费刷完整 120 道题库 — 无需注册。
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