The smallest size grounding electrode conductor connected to a ground ring from a 225-A, main breaker service panelboard is ___ AWG. The service panelboard is fed with four 4/0 AWG conductors and the ground ring is a 2 AWG copper conductor.

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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

The smallest size grounding electrode conductor connected to a ground ring from a 225-A, main breaker service panelboard is ___ AWG. The service panelboard is fed with four 4/0 AWG conductors and the ground ring is a 2 AWG copper conductor.

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