On 13/02/2020 22:35, TimW wrote:
On 13/02/2020 22:24, wrote:
On Thursday, 13 February 2020 21:59:54 UTC, TimWÂ* wrote:
There was an ancient (1950s) steel pipe bringing mains water into my
house under the front room and then up in the cup'd under the stairs.
There there was a stop cock and it went into copper pipe and onto the
copper a large sleeved earth wire was connected with a tag on saying "Do
Not Remove".

The steel pipe was leaking so I have taken it all out and replaced with
blue plastic pipe. Was looking at the earth arrangement and wondering if
I need to earth the wiring in another way, into the ground or something,
or are we still earthed through the water in the plastic pipe out to the
outside world?

TW

Water is NOT an adequate earth. An old electrical install with no
earth is not safe.


So what would be an adequate earth?
TW


Earth rod and required RCD measures if you are a TT installation.


But are you maybe a TN-C-S or TN-S (supplier provided earth) and this
clamp was merely equipotential bonding?