Is there anything inherently different between 15amp and 20amp outlets? Outlets labeled 20a are about 3-4 times more expensive than the ones labeled 15a. My buddy with a fair amount of experience advises me to buy 15a outlets and hook them up to my 12 gauge wire running back to 20amp breakers. While this may not follow the label he says people do it all the time and there's no issue. Good advice?