Services & DistributionQuestion 42 of 521
The optional feeder/service calculation of 220.84 for a multifamily dwelling may be used only when which condition is met?
a.There are at least 3 units and no dwelling is supplied by more than one feeder
b.The building is over 3 stories
c.Each unit exceeds 2,000 sq ft
d.Only one meter serves the building
Explanation
Per 220.84, the optional multifamily method applies when there are 3 or more dwelling units, no unit is supplied by more than one feeder, and each unit has electric cooking plus electric heat or AC. Story count, unit size, and meter count are not the qualifying conditions.
Law Reference: 2023 NEC §220.84Practice all 521 questions free — no signup required.
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