SC Electrician Practice Questions - South Carolina Electrician Contractor Examination Exam

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A 25-horsepower, 460-volt, three-phase Design B motor has a Table 430.250 FLC of 34 A. Using Table 430.52, what is the maximum standard inverse-time circuit breaker permitted for branch-circuit short-circuit and ground-fault protection?

40 A 70 A 80 A 90 A

Correct Answer:

90 A

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