I have a related question. I finished a basement a while ago and had a
buttload of 12-2 wire around. I just did the whole thing with 12-2.
The breakers were 15 or 20 amps based on what they were used for. Is
this a fire hazard? I would think not because the wire would never
heat up on the 15 amp circuit, but just wondering now that you guys are
chatting about it.