Ground fault protection of personnel in industrial locations using the new UL 943C

Most refineries, drilling platforms, and chemical plants are equipped with receptacles used for powering equipment. This can present a shock hazard; therefore, NFPA and OSHA require ground-fault circuit interrupter (GFCI) on all receptacles powering equipment used by personnel and are not part of the building permanent wiring. Due to the lack of GFCI at voltages above 240 V, both NFPA and OSHA require employers to implement the assured equipment grounding conductor program for all temporary wiring installations.