SC Electrician Practice Questions - South Carolina Electrician Contractor Examination Exam

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A 25-horsepower, 480-volt, three-phase motor is 88 percent efficient and operates at a 0.90 lagging power factor. Using 746 W/hp and √3 = 1.732, what line current does the motor draw?

34.0 A 49.1 A 24.9 A 28.3 A

Correct Answer:

28.3 A

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