SC Lightning Protection Practice Questions - South Carolina Lightning Protection Systems Contractor Examination Exam

How many grounding electrodes are required at each down conductor of an ordinary NFPA 780 (2020) system?

None if the building has a Ufer ground One approved grounding electrode at each down conductor Two ground rods at every down conductor, regardless of soil One shared electrode for the entire building

Correct Answer:

One approved grounding electrode at each down conductor

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