In message , Lurch
writes
On Mon, 02 Apr 2007 23:15:18 +0100, Owain
mused:

You *must* run the lives, neutral and earth together in one conduit or
cable.

Says who?

The feed and return of any given circuit should be paired in metal
conduit or armoured/screened cable to prevent eddy current issues.
Whether this is a supply or two switch wires it's important they be
contained together.

It's a similar scenario to making sure that the three phases in
distribution equipment are all run through a single hole.


--
Clive Mitchell
http://www.bigclive.com