Was at my fathers house and decided to pop of his deadfront to have a look at the wiring. I noticed the 20amp breaker for the bathroom/bedroom upstairs is wired with 14g wire and not 12g. I know it isn’t correct but how big of a safety issue is this? Is this enough to cause the conductor to overheat? No signs of overheating from what I can see.
Also I noticed a few double taps to breakers which are sylvania one of which was the doorbell transformer tapped off another circuit. Couldn’t determine brand of panel.
At best guess id say 25 year old home.