wrote:

If you think there is a big difference in the electrocution risk
of 240V, versus 120V, maybe you can offer some insight
into how that is so?

The british regulations do not consider anything over 50V DC to be "safe" -
even then, Extra Low Voltage wiring in bathrooms (even at 12V) has to be
seperated from ground as an extra precation.

We have 100-120V [1] in the same band as 220-240V and both systems have to
meet the same wiring standards.

[1] Not common but 110V tools exist for building site usage - albeit wired
as 55-ground-55 which does increase the safety another notch.

--
Tim Watts Personal Blog: http://www.dionic.net/tim/

"It would be better to live under robber barons than under omnipotent
moral busybodies."