In a 277/480-volt, 3-phase, 4-wire system, the branch circuit conductors are on a 60-A circuit breaker. The load draws 52 A, and 1/0 AWG conductors would have been more suitable if the run were shorter, but voltage drop considerations require using an EGC of which size?

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Prepare for the Independent Electrical Contractors (IEC) Year 4 Exam. Access flashcards, multiple choice questions, and detailed explanations. Enhance your readiness and achieve your certification!

Multiple Choice

In a 277/480-volt, 3-phase, 4-wire system, the branch circuit conductors are on a 60-A circuit breaker. The load draws 52 A, and 1/0 AWG conductors would have been more suitable if the run were shorter, but voltage drop considerations require using an EGC of which size?

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