On Mon, 28 Jan 2008 19:51:36 +0000, The Natural Philosopher wrote:

http://www.youtube.com/watch?v=PXiOQCRiSp0

Thiose isolators are NEVER opened under load though. They have oil
filled contactors to actually break the circuits. Those are
isolators..thats just redsidual cable capaitance being broken.

There is more about that arc if you dig about on the web rather than the
few words on yewtube.

http://www.arcfault.org/video.htm

Fascinating stuff.

--
Cheers
Dave. pam is missing e-mail