For reasons related to safety and appearance, electrical cables should run inside and not on the wall. If your walls are made of concrete or masonry, you have to draw a cable channel in which you can lay cables in masonry over long distances. It makes sense to make the channel slightly larger from the outset, so that you can add other cables later without too much effort.

How to proceed:

Before you start, use a metal detector to ensure that there are no water or heating pipes or electrical cables in the masonry. To make sure, deactivate the fuse.

Mark the course of the cable channel. To do so, use a spirit level: the cable should run at a right angle where possible!

For the cable channel, take a chisel that is definitely wider than the cable.

Before you switch on the BOSCH Rotary Hammer, set the rotation stop and fit the chisel. You can then begin.

When the cable channel is ready, use adhesive tape to firmly attach the cable(s). In this way, they can neither slip nor fall out. You can now fill the channel again with cement.