Outlet for wall-mount TV
I will be adding a recessed wall outlet for TV by tapping off an existing circuit directly below (same stud cavity), and would like advice on the best method without doing any wall repair.
Existing outlet box is metal w/ the large nailing bracket, and metal wire clamps holding two pair of 12/2 romex entering at the top. I'm not sure there would be enough room in the box anyway, but I figure I'd need some pigtails to connect properly. On the other hand, I'm tempted to install a deep old work box right next to it, then connect everything in there and put a blank plate on the original box...or maybe use the original for the HDMI low voltage stuff. Is that the way to go about this?
BTW, is it ok (or not) to run the low voltage cord through the wall? I was thinking of drilling an adequate hole through blank face plates, and installing a couple low voltage boxes, but just running the cord from one to the other. No?
I'm trying to use HD's off the shelf stuff, too. Thanks much.