MS Master Electrician Practice Questions - Mississippi Master Electrician Contractor Examination Exam

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A 480-volt, three-phase circuit carries 90 amperes for 180 feet on copper conductors. Use K = 12.9, √3 = 1.732, and a circular-mil area of 83,690 CM for 1 AWG. What is the voltage drop?

5.0 V 7.5 V 2.5 V 4.3 V

Correct Answer:

4.3 V

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