Code aside, I would say to be on the safe side it should. How can anyone tell what a duplex receptacle would really be used for? Unless for some reason the coffeemaker is incompatible with the GFCI. Just my opinion.
Re: GFCI Protection For Fairs#77458 06/02/0101:40 PM06/02/0101:40 PM
My take on article 525 is that it only requires GFI protection for portable wiring & equipment (525-3). I realize the coffee pot is portable, but if the receptacle is part of a fixed wiring sytem, it probably doesn't need to be GFI protected.
GFI receptacles are cheap, if nuisance tripping isn't going to be a problem, I would go ahead & use it.
Few things are harder to put up with than the annoyance of a good example.
Re: GFCI Protection For Fairs#77460 06/03/0106:49 PM06/03/0106:49 PM
My question would be: Is the coffee maker close to a sink (within 6 feet). If so, then yes, you would need to protect your 20 amp receptacle. It doesn't matter if it's a duplex. Any receptacle within 6 feet of a sinks edge should be gfci protected. Also, I would have it protected if it's exposed to weather--outside rain, or etc.
Originally posted by cinkerf: Is a 120 volt 20 amp duplex receptacle required to be GFCI protected? It will be used for a coffee maker at a Fair.