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

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A grounded rooftop pipe is 30 ft above the nearest lightning-protection ground reference. There is one down conductor in the 100 ft zone and the flashover path is through air (Km = 1). What is the calculated bonding distance D?

2.5 ft 5.0 ft 7.5 ft 30 ft

Correct Answer:

5.0 ft

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