IMSA Signal Inspector Practice Questions - IMSA Traffic Signal Inspector Certification Exam

What type of ground rod is typically required for traffic signal grounding per NEC requirements?

Aluminum rod, 6 feet long, 1/2 inch diameter Copper-clad steel rod, 8 feet long, minimum 5/8 inch diameter Galvanized steel rod, 4 feet long, 3/4 inch diameter Stainless steel rod, 10 feet long, 1/2 inch diameter

Correct Answer:

Copper-clad steel rod, 8 feet long, minimum 5/8 inch diameter

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