I am installing a subpanel in my garage and feeding it from the main box with 6/3 romex. I ran the cable across the basement ceiling, through the wall into my garage. I was able to run it up through the wall that separates my house from my garage, into the garage attic, over to the other side of the garage and down the wall to the subpanel.
Inside the wall I used several staples to make sure the cable stayed away from the drywall. However, now that I have the cable in place, I'm uncomfortable with the unprotected 60 amp feed running through a wall that someone could drive a nail through. I understand I can't run it through conduit, so what is the best way to protect the cable (hence, PEOPLE) from damage?