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SC Electrician Practice Questions - South Carolina Electrician Contractor Examination Exam

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A 100-ampere feeder uses 3 AWG copper ungrounded conductors (52,620 CM) and an 8 AWG copper equipment grounding conductor. The ungrounded conductors are increased to 1/0 AWG copper (105,600 CM) for voltage drop. What is the minimum copper EGC after 250.122(B)?
Correct Answer:
4 AWG

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