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

NEC 2020 Section 230.67 requires a Type 1 or Type 2 surge-protective device on which of the following?

All services supplying dwelling units Only services larger than 400 A Only services in lightning-prone counties listed by the AHJ Only optional standby generator feeders

Correct Answer:

All services supplying dwelling units

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