Plug socket types advice please

[meow2222]

switch bounce is not the prime issue. Or even the issue at all in practice.

But neither type of socket, sp or dp, poses any risk when there ar eno other faults. IRL there sometimes are other faults, and thats where the 2 behave differently, both with minor pros and cons.

indeed, switching is just one more layer of safety, rather than the only one.

If. If an RCD is present and working, there really is no benefit to dp switching.

Should on new installs, sure. Does on the millions of older TT installs? Almost no chance of that. And many appliances arent earthed.

For a switch in peak condition, sure. Over half a second of crap is not unusual for a switch in not such good condition.

No, but this is not the issue. I was just pointing out there that even with switches designed to close in a certain order, that sequence is not guaranteed.

NT

[John Rumm]

You don't *need* a switch at all... and I certainly would not reject a DP switched one in favour of a SP one unless there were some other reason to do so.

(This is mostly academic anyway since most switched sockets available these days are DP switched)

[John Rumm]

We are talking socket switches here! Just how much mass do you suppose the contacts would need to have to sustain a under damped oscillation for that duration?

(unless you are talking about very dirty contacts that are arcing - then the number of poles is the least of your worries!)

AFAIAA most DP switches are not usually designed to close in any particular order... if they were then chances are they would.