As long as the 20 amp circuit does not feed through the receptacle it is
perfectly acceptable. The 15 amp receptacle should be pigtailed to the #12
wires if they feed in and feed out.
John Grabowski
http://www.mrelectrician.tv
"Greg and Kelly Carr" wrote in message
ink.net...
I took apart an existing wall in my home and found that 15 amp outlets
were
used on a 20 amp circuit. Should these be replaced with 20 amp?