Huge wrote in
:

They are quite common in computer rooms where sockets are installed
under floors (Yes - I know it's a silly idea to put sockets under
floors - but there are lots).

Dunno about "quite common", though. I've been working in computer
rooms for 32 years now and I've never seen one before.


Well, I've done lots, in broadcastingplant and associated equipment -
routers, etc.

Placed under the floor, with a lid, under the equipment they serve, they're
an elegant answer.

Ours all used standard 13A plugtops, or in the years of madness, Walsall
Guage

mike