"BigWallop" wrote in message
...
.....
Taking all that into account, you're talking about a supply of 16 mm on
each conductor
for the lengths you're talking about, and you may also have to double the
neutral to
take the start up load until the motors are all running to speed.

With that supply it will allow you to run lighting and a few sockets from
it as well.

Personally, I would run it in 25mm, on the principle that it is easier to
build in spare capacity at the beginning than it is to add it later. One of
Murphy's Laws must be that you always want more power in a workshop than you
first designed for.

Colin Bignell