In article ,
SH wrote:
They are bigger. Still used in theatres.
^^^



The reason for that is if a plug had a fuse in it and it blew during a
live performance, it was not a quick or safe job to get a maintenance
man out to climb into the suspended walkways in the dark, find the plug,
unplug it, take it apart, replace fuse, reassemble the plug, plug it
back in and vacate the suspended walkways.

Err, theatre lighting doesn't use a ring main. Most usually a radial with
dimmer control. You don't want such circuits confused with a GP mains
supply - hence different connectors.

--
*Isn't it a bit unnerving that doctors call what they do "practice?"

Dave Plowman London SW
To e-mail, change noise into sound.