I'm looking at running cables through an interior wall, from one side to the other (so, what, 6"?). This will be from the side of the wall that my TV is on to the other side where there is a closet. I'd like to place one or two amps in the closet, along with my PS3. Most are low voltage cables (speaker wires, RCA interconnects, and HDMI cable), but I want to run three power cords through there, too.
Is there any reason why I should spend the money (~$50) to get something like
this (shown below) versus just running the power cords through the wall? I've read that this might be an issue with insurance because of fire codes, so I'll check into that, but I'm wondering if this actually represents a real risk. To me, it seems perfectly safe to run the power cables through an open cavity between two sheets of drywall. There's no insulation in there, and I could place them inside of conduit. Honestly, I think that it's safer for me versus connecting up and running the Romex. I wanted to ask before doing something stupid, though. I'd be using wall plates, something like what's shown below at the bottom, so it wouldn't be permanent.
Thanks!