Question 13006 of 731 · Texas Journeyman Electrician Exam
A balanced three-phase 480 volt resistive load is rated 50 kW. What is the line current?
Exactly one answer is correct.
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Correct answer to question 13006
- B: 60.1 A
Explanation
Three-phase current is I = P / (E x 1.732) = 50,000 / (480 x 1.732) = 60.1 A. Forgetting the square root of 3 gives 104.2 A, and multiplying by 1.732 instead of dividing gives 180.4 A.
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