At one time, the National Electrical Code (NEC) contained two Articles you won’t find as of the 2020 revision: Art. 280 (surge arrestors) and Art. 285 (transient voltage surge suppressors or TVSS).

Explanation: Section 240.21 states, “Overcurrent protection shall be provided in each ungrounded circuit conductor and shall be located at the point where the conductors receive their supply.” Section ...