GFI on all recept in a comm kitchen sounded like anightmare in the making back when. We did a lot of Country Club work, and a few restuarants. Yes, ALL 120 volt receptacles, be they single, or duplex, shall be GFI.
OK, we did it! And yes, a few 'issues' arose. A 'bad' slicer! A ice crusher toy with a real problem, and a plate warmer with an attitude. A few items either to the appliance tech (or dumpster) and issues resolved.
Single recept w/deadfront, single with GF breaker, duplex GFI (all 20 amp). Bubble covers in the really wet areas, and job done.
