Question 3037 of 731 · Texas Journeyman Electrician Exam
Arc energy reduction is required where the highest continuous current trip setting of a circuit breaker is at least what value?
Exactly one answer is correct.
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Correct answer to question 3037
- C: 1200 A
Explanation
Where a circuit breaker is rated or can be adjusted to 1200 A or higher, a method to reduce clearing time such as an energy-reducing maintenance switch must be provided. A similar rule applies to fuses rated 1200 A or more. See 240.87 and 240.67.
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