Planning & EstimatingQuestion 363 of 521
Using the optional method, a dwelling's other loads (excluding heating/AC) total 30 kVA. What is the demand after applying the optional-method demand factors?
a.30 kVA
b.22 kVA
c.12 kVA
d.18 kVA
Explanation
The first 10 kVA is at 100% and the remainder at 40%: 10 + (20 × 0.40) = 10 + 8 = 18 kVA. Applying 40% to the whole 30 kVA or skipping the first block gives the wrong answers.
Law Reference: 2023 NEC §220.82(B)Practice all 521 questions free — no signup required.
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