On 30/11/16 11:48, DICEGEORGE wrote:
I seem to recall reading somewhere that in 2 way switching for house lighting its a good idea to have a neutral wire parallel to the lives to cut down on interference, is this so? In which case I need 4 core and earth not 3 core and earth.

I is mentioned at:
http://wiki.diyfaq.org.uk/index.php/2_Way_Switching

[g]


No. Because your 2 or 3 wires to the switch are already balanced -
current down to the switch = current back up from the switch.