Question 3007 of 790 · California General Electrician Exam
The available fault current at a panelboard is 18,000 A. Which breaker interrupting rating is acceptable?
Exactly one answer is correct.
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Correct answer to question 3007
- D: 22,000 A
Explanation
The interrupting rating must be at least equal to the available fault current at the line terminals. Only 22,000 A meets or exceeds 18,000 A. See 110.9.
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