On 22/11/2016 00:53, Dave Plowman (News) wrote:
In article ,
Bill Wright wrote:
Drill a hole in one of the cutouts on the back of the box. Screw in a self
tapper. Pull out the cutout. Drill hole through wall.


Nah.

1.Use a small sharp screwdriver and a hammer. Gently tap the little
bit of metal at one side of the knock out where it isn't perforated.
When it's cut through lever the knock out out.

Hammering on a box set into plaster may not be the cleverest thing to do.

I said 'gently tap'. Use skill.


2. Use a metal drill to drill a hole in the back of the box. Throw the
metal drill away if it has been blunted by the masonry. Use a masonry
drill to extend the hole through the wall.

Eh?

Half past three.

Bill