In this article well show you some house wiring basicshow to position outlet and switch boxes and run the electrical cable between them. At this point the foam should fit snugly around the cable.

Builder Man With Pneumatic Hammer Drill Perforator With Diamond
Drilling hole in wall for cable. Go to the space into which the drill was boring. Use a grounded tool so the metal frame will conduct electricity to ground. Remove any insulation in the general area to make the bit easier to locate. When you are drilling through a wall you dont want to drill into an electrical cable. It is this hammering action that allows the drill to move backwards and forwards as well as rotating. If however any of your cables need to go through masonry such as brick block or concrete then you will need a drill that has a hammer action.
Plastic boxes and flexible nonmetallic cable commonly called romex put electrical wiring projects within the skill range of every dedicated diyer. Drill the hole through the wall stick the end of the cable through then force the square of foam rubber into the whole. If using a battery drill turn off all electricity in the house. Some powered drills. It is fitted with a bit either a drill or driver depending on application secured by a chuck. Here are some suggestions for reducing the electrical hazards associated with making blind holes in walls.
Force one of the rj45 connectors on the cable you intend using through the hole. If unable to locate the bit repeat the drilling process after moving to a spot a couple of inches away from the first hole. A drill is a tool primarily used for making round holes or driving fasteners.