AZ ROC C-11 Electrical (Commercial) Practice Questions - Arizona ROC C-11 CR-11 Electrical (Commercial) Examination Exam

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A 480V, 3-phase, 3-wire branch circuit feeds a continuous load of 60 A over a distance of 250 feet. If THHN copper conductors with a circular mil area of 26,240 CM (1 AWG) are used, what is the calculated voltage drop assuming a K-factor of 12.9?

7.3 V 12.7 V 14.7 V 25.4 V

Correct Answer:

12.7 V

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