Question 8013 of 731 · Texas Journeyman Electrician Exam
What is the maximum rating of a nontime delay fuse used for motor branch-circuit short-circuit and ground-fault protection?
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Correct answer to question 8013
- B: 300 percent of full-load current
Explanation
Table 430.52 permits nontime delay fuses up to 300 percent of the table full-load current for most ac motors. These fuses have no time delay and need a higher rating to survive inrush.
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