In a panel with an upper 250 A breaker feeding Load 1 and a lower 400 A breaker feeding Load 2, one conduit runs from the panel to a pull box with 250 kcmil conductors for the 250-A breaker and 500 kcmil conductors for the 400-A breaker. The smallest EGC permitted in this conduit is which AWG?

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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 panel with an upper 250 A breaker feeding Load 1 and a lower 400 A breaker feeding Load 2, one conduit runs from the panel to a pull box with 250 kcmil conductors for the 250-A breaker and 500 kcmil conductors for the 400-A breaker. The smallest EGC permitted in this conduit is which AWG?

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