voltage on water pipe

[incompetent]

Recently had some plumbing work done and the plumber warned me that there was some voltage on the water pipes. He tested the circuit and said that there was a high resistance on the earth as well (>200ohms).

presumably this means 2 problems. Anyone got any suggestions how I can locate the problems and fix?

The house is a Victorian terrace with 80s/90s circuit breakers and an earth wire that appears separate from supply.

 

[ricicle]

Do you know if you have a TT system (earth rod used) ?

 

[incompetent]

Not sure, how would I tell? Earth wire disappears under boards. It is separate from supplier connection though. If that helps.

 

[Spark123]

Sounds like a TT system as you are not using a suppliers earth terminal, best bet is to get an electrician in to have a look.
(Also the plumber deserves a nice box of chocolate biscuits as he may have saved your life)
There is probably only 1 problem but shows as two, an electrician should have the correct test equipment to tell.

 

[Johnmelad]

OP

//www.diynot.com/wiki/electrics:earthing_supply_types_and_bonding:earthing_arrangements