On Sat, 19 Jan 2008 16:01:24 +0000 someone who may be John Rumm
wrote this:-

It would actually be more appropriate to measure the Earth Fault Loop
impedance since it is the integrity of the earth that is in question.

Quite right. My mistake.


--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54