I had a Nest Cam and a Sonos 1 speaker mounted on a wall and I ran the power cables through drywall about 4-feet to a power outlet. We did it by chipping just enough drywall to make space for the cables to lie inside of, and then we covered and painted it, so there is not much breathing room between the cable and the wall. I am now a bit worried that this may not be safe. Are there any issues with doing this? Thanks.