Does GFCI Protection Apply to Commercial Buildings?
A user asked the app whether GFCI protection applies to commercial buildings, and a second question the same week asked about the GFCI distance rule in commercial work. The answer to the first is a firm yes. Dwellings get 210.8(A); everything else, including offices, restaurants, retail, schools, and industrial occupancies, gets NEC 2023 210.8(B), and it has grown broader every code cycle.
Where 210.8(B) requires GFCI
In other than dwelling units, GFCI protection is required for receptacles in bathrooms, kitchens and areas with a sink and permanent provisions for food preparation or cooking, rooftops, outdoors, indoor damp and wet locations, locker rooms with showering facilities, garages and service bays, crawl spaces, unfinished basements, and laundry areas. The 2023 cycle covers receptacles rated up to 250 volts and, in several categories, three phase receptacles up to 100 amps, so this is no longer just a 15 and 20 amp 120 volt rule. Hard wired equipment has its own additions, such as 422.5 for specific appliances like vending machines and drinking fountains.
The 6 foot sink rule
The distance question almost always means the sink rule. 210.8(B) requires GFCI protection for receptacles installed within 6 feet of the top inside edge of the bowl of any sink. The measurement is the shortest cord path, the same convention 210.8 sets generally: around obstructions, through doorways if the cord would route that way, not through walls, windows, or floors. A receptacle behind a wall from the sink but 4 feet away by tape measure can still be outside the rule if a cord cannot physically reach it in 6 feet. A break room counter receptacle 5 feet from the sink bowl edge needs GFCI, period.
What commercial installs get wrong
The common misses are rooftop HVAC receptacles, which need GFCI and are required within 25 feet of equipment by 210.63 in the first place, service bay receptacles in auto shops, and kitchens: as of the 2023 edition the kitchen category applies to areas with a sink and cooking provisions, catching break rooms with a microwave and sink combination in many jurisdictions. Readily accessible GFCI reset locations are required by 210.8, so a breaker type GFCI in a locked electrical room can be the cleaner answer for receptacles behind equipment. As always, confirm which edition your jurisdiction has adopted, because 210.8(B) scope differs meaningfully between 2017, 2020, and 2023.