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

NEC 2020 250.104 requires bonding of which of the following to the electrical grounding electrode system?

Only nonmetallic piping Metal water piping and exposed structural metal that is interconnected to form a metal building frame Only the interior isolated-ground bus Only lightning air terminals

Correct Answer:

Metal water piping and exposed structural metal that is interconnected to form a metal building frame

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