"Owen Duffy" wrote in message
...
"Mike Kaliski" wrote in
:

Owen

Equipotential bonding is the process whereby all exposed conductive
parts are connected together so that they are all at the same (usually
earth) potential. Cross connecting three independent earthing systems

The problem is that in the event of a lightning strike, nothing is at
earth
potential!

Owen

and a corrolary of this: there is no such thing as an 'rf ground'.