Services & DistributionQuestion 54 of 521
Service-entrance conductors must have an ampacity not less than which of the following?
a.The computed load per Article 220, with continuous loads at 125%
b.The physical size of the meter socket
c.Half the service rating
d.The neutral load only
Explanation
Per 230.42, service conductors are sized to the load calculated under Article 220, applying 125% to continuous loads. Meter-socket size, half the rating, and neutral-only are not the sizing basis.
Law Reference: 2023 NEC §230.42Practice all 521 questions free — no signup required.
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