Question 13123 of 731 · Texas Journeyman Electrician Exam
What is the inverse time breaker maximum for a 3 hp, 230 volt, single-phase motor (table FLC 17 A), allowing the next higher standard size?
Exactly one answer is correct.
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Correct answer to question 13123
- C: 45 A
Explanation
250 % of 17 A is 42.5 A, which is not a standard size, so the next standard rating of 45 A is permitted. Rounding down to 40 A is allowed but is not the maximum.
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