If it's solid concrete I wouldn't use a plastic box, especially one with
wings. I'd use a standard metal Gem box, in a shallow version. Mark the
outline of the box on the wall, then with a 3/16 carbide bit and hammer
drill, drill holes slightly deeper than the box depth along the box outline,
aprox every 1/4 inch. Then with a slightly larger carbide bit, drill as many
holes in the center of the outline as you can, and then with a 3/4 inch cold
chisel, chop out the cement


"northeast101" wrote in message
...

Hello All,

I am trying to install a recessed electrical box (socket) in a concrete
wall. Before I start messing about with the wall, I was wondering if
anyone here can give me a few tips about how I go about making a
rectangular recess in a solid concrete wall which has a tendency to
crumble.
The box I want to install is identical to the one he
http://tinyurl.com/cm3bn
If only the above URL was about concrete walls this post would not
be needed.

Thanks.

KB




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northeast101