This is a small barn with livestock in most of the building. In the
back there is a separate room for feed and supplies (called feedroom).
Animals dont go in there. On the wall adjoining the animals, there is
an outlet with GFIC. I want to put an outlet in the actual barn
directly behind this outlet. Because livestock chew wires, no wires
can be exposed. The box is a metal handy box and will be connected
downline form the GFIC. The wire will need to go thru two 2x4's
nailed together and directly into a knockout on the rear of the
handybox, which will be screwed to that 2x4. Thus, the length of wire
from the "supply" box (in feed room) to the outlet in the animal
section, is about 6 inches of 12-2 romex. There will be a romex clamp
connector on the side of the box in the feed room. The wire goes the
6 inches thru the wall and directly into the box in the animal room.
My question is whether I need a cable clamp on the rear of the
handybox in the animal section? In order to fit the clamp with it's
screws into the wall, I'd need to drill a hole about 1 1/4 inches in
diameter. Not only is this a big job to drill, but also will weaken
the wall. For such a short run of wire is it absolutely necessary to
use a clamp, or should I just push the wire thru the knockout, ground
it to a green screw, and wire to the outlet. Remmember, it's clamped
in the feed room, 6 inches away.
I do know that it would electrically work without the clamp and poses
no real hazzard, but how would the code look at this?
I doubt it will ever be inspected where I live, but I am just checking
on what is required.
I have also considered using a 4.5 inch box for that outlet and
putting the clamp on the INSIDE of the box, in a corner where it wont
be near the outlet. I always use clamps where all wires enter boxes,
but in this case it seems rather senseless and much more trouble than
What would you do?
What is allowed?