210.8(B) Other Than Dwelling Units. All single-phase receptacles rated 150 volts to ground or less, 50 amperes or less and three-phase receptacles rated 150 volts to ground or less, 100 amperes or less installed in the following locations shall have ground-fault circuit-interrupter protection for personnel.
Comment: The 2014 NEC only required GFCI protection for personnel for 125-volt, single-phase, 15- and 20-ampere receptacles located in areas where GFCI protection was required.
The 2017 NEC expanded these requirements to include single-phase receptacles up 50 amperes and 150 volts to ground as well as three-phase receptacles up to 100 amperes and 150 volts to ground. Receptacles with higher voltage and current ratings present similar shock hazards to receptacles of lower voltage and current ratings.
