" Had a guy come in to help put up wood moulding in the kitchen. Must have
hit a wire becaue it blew a breaker.
He pulled the nail out (small nail) and hammered it in elsewhere. Flipped
the breaker back on. Said don't worry about it.

Now I lie awake at night fearing its a fire hazard.

Is it?


*In a 1920's house that has had some electrical improvements over the years
it is possible to have wiring anywhere. This is the kind of thing that will
surface as a problem weeks, months or years from now. By nailing into the
wiring and causing a dead short some of the copper wire is probably nicked.
The wire may only be connected at that point by a hair, more or less.
Depending on the load that travels over that point it can overheat and if it
is in contact with combustible materials will burn whatever it touches.
Eventually the wire will burn apart and whatever it is feeding will become
dead. To answer your question: Yes it is a potential fire hazard.

For safety and piece of mind get an electrician in there and have him take a
look.