In article om,
wrote:
We have recently moved our sink, the current earth wire is no longer
long enough. What should I use to connect a new piece of earth wire to
the old piece in order to extend the earth to the new sink, and save
replacing the whole earth wire back to the consumer unit??

Sinks don't have to be earthed. Indeed plenty of opinion says it's a bad
idea.

--
*Two wrongs are only the beginning *

Dave Plowman London SW
To e-mail, change noise into sound.