On Wed, 2 Apr 2008 14:51:05 +0100 someone who may be "Clive D. W.
Feather" wrote this:-

The rail in the middle and the outside 4th rail are the ones to watch out
for. they have -210 volts and +420 volts running through them respectively.

Approximately. They can be up to +750V in some places.

And that is only the nominal voltage. The actual voltage may be
higher under some conditions.


--
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