In message , Franz Heymann
writes

"Chris French and Helen Johnson"
wrote in message ...
but otherwise I
don't
see a problem. mine sits in the wooden propagator box in damp sand
the
cable is insulated and sealed. If it was to develop a fault in the
insulation then it would just trip the RCD anyway.

Only if the propagator itself is connected to earth.

And how would I earth a wooden propagator? :-)

The cable itself is earthed of course.

(though if you have mains electricity in a GH then yes I guess any metal
work such as staging etc. should be earth bonded
--
Chris French and Helen Johnson, Leeds
urg Suppliers and References FAQ:
http://www.familyfrench.co.uk/garden/urgfaq/index.html