On 11/14/2010 9:02 PM, Phil Allison wrote:
Only a COMPLETE IDIOT does what you did.

Along with several idiots at Xerox.

While i was working on a switching power supply, we had reason
to measure the input (live) AC line. Tectronix to the rescue.
Apparently they knew there were a few insane people that would
want to float a scope for live AC line measurements and they had
a special isolation box that the scope plugged into for just that
occasion.

Of course, some fool removed it while we were at lunch.

Ya know, it's amazing the fwipzzzt noise the ground lead on an
expensive scope probe makes when it goes up in flames when you
turn the power on.

Jeff