Services & DistributionQuestion 43 of 521
A dwelling has 10 kW of electric heat and a 5 kW air conditioner that never run at the same time. What load is included in the calculation?
a.15 kW (both)
b.7.5 kW (average)
c.10 kW (the larger)
d.5 kW (the smaller)
Explanation
Per 220.60, for noncoincident loads only the larger of the two is included: 10 kW. Adding both (15 kW), averaging, or using the smaller misapplies the noncoincident-load rule.
Law Reference: 2023 NEC §220.60Practice all 521 questions free — no signup required.
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