Question 8016 of 844 · Washington 01 Journey Level Electrician Exam
A three-phase motor has a table full-load current of 40 A. What is the maximum inverse time breaker rating for its branch circuit, without using exceptions?
Exactly one answer is correct.
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Correct answer to question 8016
- A: 100 A
Explanation
Table 430.52 permits 250 percent for an inverse time breaker. 40 A times 2.5 equals 100 A, which is a standard size. 50 A results from wrongly applying 125 percent.
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