I've Googled away and learned a little bit about RCDs (which I admit I had
never heard of till I read the assembly instructions for our bottom of the
range lawnmower). I have a few questions I was hoping someone here could
answer:

There seem to be different types of RCD - which is best for a lawnmower?
Where do you buy them from? (not necessarily on line)
How much do they cost?

cheers

dd

a couple of the links
http://www.mywatergarden.co.uk/rcd.html
http://www.niceic.org.uk/consumers/gardenhaz.html
and
http://www.congorcd.org/
which is not quite what I had in mind