Question 13117 of 931 · Texas Journeyman Electrician Exam
A 100 % rated circuit breaker assembly is listed for continuous operation at its full rating. What is the minimum such breaker rating for a 160 A continuous load?
Exactly one answer is correct.
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Correct answer to question 13117
- A: 175 A
Explanation
When the assembly and the overcurrent device are listed for 100 % operation, the 125 % factor does not apply, so the device must be at least 160 A. The next standard size is 175 A; a standard rated breaker would need 200 A.
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