Another question though. Can i install a 20 amp gfci on a 15 amp circuit or does that defeat the purpose? Thanks
It will work but does not comply w/ code, the reverse is OK ,a 15A on a 20A is fine, but a 20A on a 15A does not comply w/ Table 210.21(B)(3).
This is, of course, assuming that Vern is asking about a GFCI
receptacle and not a GFCI circuit breaker.
Not being able to install the 20 amp GFCI receptacle is due to the rating of the receptacle, and not the GFCI circuitry inside. It will work, but the sideways prong of a 20 amp device can be inserted in it, and thus possibly overloading the circuit, and tripping the circuit breaker.......... not that I've ever actually seen anything that had a 20 amp/120v plug on it.
Charles