"HerHusband" wrote in message
...
I haven't checked the electrical supply stores, but if I opt to
snake
the cable through the wall, my next concern would be the cable
clamp
at the electrical box. A normal clamp fits in the hole and a nut
gets
tightened on the backside. But, I'll only have access to the
inside
of the electrical box. Do they make clamps that can be tightened
from
one side only? I've never paid attention because I've never
needed
one before.

There are plastic "snap-in" cable clamps that might help, but
you'd
still need to get to the back of the boxes.

What's the normal procedure then for adding a cable to an existing
electrical panel? Surely there's a way to protect and secure the
incoming
cable other than tearing into the wall just to tighten a nut on the
backside?

Anthony

If you're talking about the cable entrance at the circuit breaker
panel, use a butterfly clamp...