Question 8018 of 925 · California General Electrician Exam
An inverse time breaker sized at 250 percent will not carry the starting current of a motor with a full-load current under 100 A. What is the maximum it may be increased to?
Exactly one answer is correct.
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Correct answer to question 8018
- C: 400 percent of full-load current
Explanation
Exception No. 2 to 430.52(C)(1) lets the rating of an inverse time breaker be increased but not beyond 400 percent for full-load currents of 100 A or less, and 300 percent above 100 A. Dual-element fuses may go to 225 percent under the same exception.
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