When installing GFCI outlet receptacle on a 20 amp breaker, what should be used, a 20 amp GFCI, or is a 15 amp GFCI OK too?
The rules that apply to installation of a GFCI outlet receptacle on a 15 or / and 20 amp rated circuit breaker are the same as the ones that apply to a regular outlet receptacle. Additionally, there may be some regulations applicable only to a particular area this GFCI is going to be installed, or your local jurisdiction requirements.
From this post you can follow links to all GFCI locations in residential buildings based on 2008 NEC – at the bottom section. GFCI – (Ground Fault Circuit Interrupter) Before installing GFCI receptacles or replacing a regular outlet receptacle, always check with your local code enforcement division, there may be some additional regulations applied, sometimes…