Services & DistributionQuestion 62 of 521
What is the minimum rating of the service disconnecting means for a one-family dwelling?
a.100 A
b.60 A
c.200 A
d.125 A
Explanation
For a one-family dwelling, the service disconnecting means must be rated not less than 100 A, 3-wire. The 60 A rating applies to smaller occupancies such as certain limited loads, while 200 A and 125 A are common but not the code-required minimum.
Law Reference: 2023 NEC §230.79Practice all 521 questions free — no signup required.
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