In article , Mike Tomlinson
writes
In article , BigWallop
writes

Well, I'm sorry too, because I can't find anything, anywhere, that says a
standard RCD in a normal domestic installation will trip the supply unless
there is a fault from Phase to Earth.

You don't have to. Wire a plug with two wires, one to neutral and the
other to earth. Plug it into a socket and touch the two wires together.
Your RCD will trip; if it doesn't, it's faulty.

Not necessarily.

Only if theres enough current flowing through the RCD.

Refer to the other post I made explaining this please.


--
Tony Sayer