Question 12099 of 749 · Maryland Journeyperson Electrician Exam
An existing 200 A service shows a 1-year maximum demand of 110 A. A 40 A load is added. Using NEC 2020/2023 220.87, what is the resulting calculated load?
Exactly one answer is correct.
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Correct answer to question 12099
- C: 177.5 A
Explanation
220.87 takes the 1-year maximum demand at 125 % and adds the new load: 110 x 1.25 = 137.5 A, plus 40 A = 177.5 A, which the 200 A service can carry.
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