(a) All electrical equipment, including switches, circuit breakers, receptacles, lighting fixtures, control equipment, and metering devices located in either damp or wet locations or outside of a unit, accessory building or structure, or a building component designed as a weatherproof structure, shall be constructed of, or installed in, equipment approved for damp or wet locations.

(b) Meter sockets, without meters installed, shall be blanked off with an approved blanking plate before the service is energized.