[sdiy] Mains interference

[Neil Johnson]

Tony,

> Any pointers you can give would be very much appreciated.

http://en.wikipedia.org/wiki/Earthing_system#IEC_terminology

You might have dodgy earth, or a higher-than-you'd-like earth.  A
chunky earth rod might improve your local situation, but check with an
electrician first, or try your electricity board to see if they'll
test it/sort it for free.

Neil

--
http://www.njohnson.co.uk