On 14/02/15 17:13, Caecilius wrote:
On Sat, 14 Feb 2015 16:38:03 +0000, Kevin
wrote:
I see that many suppliers now offer both SP and DP versions of switched
sockets, with DP up to 50% dearer for a given make.

What governs which version one should use?

I'd prefer DP, as it means the appliance can't trip the RCD when the
switch is off.

With SP, an N to E short in the appliance could still cause a trip
even if the socket is switched off.


Oh sorry - I read that as Single Gang, Double Gang.

Makes not much difference most of the time...