Mains sockets, – in the same way as power cables – are usually recessed in the masonry for reasons of visual appearance. They are also protected when fitted below the roughcast/plaster. If you wish to fit a new mains socket, you first have to create space for it in the wall. 

How to proceed:

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

The electrical cables must run towards the socket vertically or horizontally. Use the metre stick and spirit level to carefully measure where the socket is to be positioned.

How deep the opening in the masonry has to be is specified on the packaging of the socket. You can set the corresponding depth at the depth stop of the rotary hammer.

Disable the hammer function. Now apply the core cutter and drill the opening. If the piece you have drilled does not break away of its own accord, you can 'help it out' with the pointed chisel. - A flat chisel may be necessary if the socket is square, to open out the round recess you have made with the core cutter.

Now place the cable from the cable channel in the opening. A qualified electrician should connect the cables.

When all the cables have been connected the right way, press the socket into the hole and mark the position of the fixing screws. Remove the box and drill holes for wall plugs in the usual way where you have marked the positions. - Push in the wall plugs - Re-fit the socket box and screw it in place.

You can now fit the socket to the box with the screws provided.

On completing your work, switch the power on again and check whether the new installation works.