This weeks change is one of the new GFCI requirements in the 2017 NEC.
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.
The added requirements now apply to single phase receptacle outlets that are 150 volts to ground or less including 240 volt ones 50 amperes or less, and three phase receptacle outlets 150 volts or less to ground and up to and including 100 amperes or less. That are installed in the areas listed in 210.8 (B) (1 through 10). Those locations include, bathrooms, kitchens, rooftops, outdoors, within 6’ of sinks, indoor wet locations, locker rooms with showering, garage and service bays, crawl spaces at or below grade, and unfinished portions or areas of basements not as habitable rooms with a few exceptions.
So this is a big change and it will cause some problems when it goes into effect for the people who don’t know about this change. 240 volt receptacle outlets are now included in these requirements. Which will include numerous outlets installed in commercial kitchens and other areas in this section.
Till next time be safe work safe.
Jake