SC Electrician Practice Questions - South Carolina Electrician Contractor Examination Exam

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A single ground rod is driven at a Hilton Head service. Unless the rod has a resistance to ground of 25 ohms or less, what does 250.53(A)(2) require?

A supplemental electrode must be added, and the two electrodes must be at least 6 feet apart. The grounding electrode conductor must be increased one size. The service must be ungrounded. The rod must be replaced with a concrete-encased electrode.

Correct Answer:

A supplemental electrode must be added, and the two electrodes must be at least 6 feet apart.

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