Mike Clarke wrote:
John Rumm wrote:

What any of this has got to do with 12V wiring and plugs though I can't
quite see at the moment.

From the OP's second post I think they discard the live pin and use the
neutral and earth pins when using the sockets in a 12V circuit. So in
theory it should be safe if a 12V appliance is plugged into a mains socket
since N and E should be at the same potential. But in practice it just

Yup, your reading does sound plausible.

In which case the concerns over disconnected PEN conductors on TN-C-S /
PME is not a particular consideration since both legs of the appliance
would have near enough zero volts across them.

needs an error like reversed L and N on a mains socket for plugging a 12V
appliance into it to become very serious.

Agreed - there are other ways for this to bite you that are more serious.

--
Cheers,

John.

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