Manufacture of wiring devices

This class includes the manufacture of current-carrying and non-current-carrying wiring devices for electrical circuits regardless of material. This class includes: - manufacture of bus bars, electrical conductors (except switchgear-type) - manufacture of ground fault circuit interrupters (GFCIs) - manufacture of lamp-holders - manufacture of lightning arrestors and coils - manufacture of switches for electrical wiring (e.g. pressure, push-button, snap, tumbler switches) - manufacture of electrical plugs or sockets - manufacture of boxes for electrical wiring (e.g. junction, outlet, switch boxes) - manufacture of electrical conduit and fitting - manufacture of transmission pole and line hardware - manufacture of plastic non-current-carrying wiring devices, including plastic junction boxes, faceplates and similar, plastic pole line fittings and switch covers

This class excludes: - manufacture of ceramic insulators, see 23.43