Canister lights, aka can lights, recess into your ceiling, so they have thermal protectors to shut them off if they get too hot. This could happen if insulation is packed too tightly around the light, ...

A light switch faceplate that’s warm to the touch is a sign of an overloaded circuit. If you have a lighting fixture with ...

For awhile now I have brought up to our admin person that the light switch in the lunch room is electrically making crackling sounds, and will sometimes stay that way unless you jiggle it around.