4.22.4.10 High-Pressure Spray Washers. All single-phase cord-andplug-connected high-pressure spray washing machines rated at 250 volts or less shall be provided with factory-installed ground-fault circuit-interrupter protection for personnel. The ground-fault circuit interrupter shall be an integral part of the attachment plug or shall be located in the supply cord within 300 mm of the attachment plug.
4.22.4.11 Cord-and-Plug-Connected Pipe Heating Assemblies. Cord-and-plug-connected pipe heating assemblies intended to prevent freezing of piping shall be listed.
4.22.4.12 Cord-and-Plug-Connected Vending Machines. Cord-andplug-connected vending machines manufactured or re-manufactured on or after January 1, 2006, shall include a ground-fault circuit-interrupter as an integral part of the attachment plug or located in the power supply cord within 300 mm of the attachment plug. Cord-and-plugconnected vending machines not incorporating integral GFCI protection shall be connected to a GFCI protected outle