"Tim S" wrote in message
...


What is an interesting question is what happens if the plumber just
replaced
a load of metal pipe with plastic. That's a bit more of a can of worms.

Or if they are silly enough to put PTFE tape on compression joints?

I am one of those that doesn't think taps should be earth bonded BTW.
If there isn't a path to earth its much harder to get a fatal shock than if
the plumber provides a low impedance earth.