In article ,
wrote:
On Saturday, 14 February 2015 16:38:04 UTC, 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?

You can't use a switched one of any variety for supplying a boiler.

I don't, having made my own decision 26 years ago. Is it now in the regs?

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