On Tue, 02 Sep 2003 14:01:26 +0100, The Natural Philosopher
wrote:

Hmm. Mine is provided by a ruddy great 4 ft long rod droven into the wet
clay...

When I rigged the auto-start genset (cow-methane powered !) we'd had
to upgrade the earthing considerably. 'Leccy board wouldn't let us
rely on a single rod, we had to bury a grid.