I have a 20-amp circuit, residential, and recently learned that the custom is to use 15-amp outlets, not 20-amp. So, after installing a few of the outlets, and struggling with the thick 12-gauge pigtails, I wondered if it would be acceptable to use 14-gauge pigtails. The pigtail I’m referring to connects the incoming 12-gauge hot wire to the hot side of the outlet. Since the outlet is 15-amp, I figured this might be ok. Please advise.
And another thing, if it’s not ok to do this, then why is it ok to use a 15-amp outlet?