Why does my bedroom light not turn on when it is below freezing outside?

Public Comments

1. It's broken.
2. Maybe some of your wiring is exposed. I'd check it out. Ask your electric company what to do.
3. Whoa, that's weird. Do you have a breaker box or a fuse box? I've heard of fuses "freezing up" in cold weather, but never a breaker. Dude, call an electrician.
4. You may have condensation shorting out your fixture. Flip the breaker off and remove the fixture, see if there is water in there. If there is, put some more insulation in the attic above the box, and shove some expanding foam in the conduit.
5. frost build up on the switch , do to lack of proper insulation and vapour barrier !!!!!
6. Check your shorts. I mean check for a short. Let's assume that this is an overhead light with wiring in a poorly insulated or uninsulated attic. You just might have moisture somewhere in the circuit that freezes and shorts out when the temps get below freezing. You might be just better off cutting out the old wiring and putting in new.