wrote in message
...
On Wed, 04 Jun 2008 19:11:40 -0500, metspitzer
wrote:

I was watching CSI. It is a great show.

Some guy falls 12 floors. His drill has been shorted and the ground
plug has been cut.

CSI says the GFCI is useless without the ground plug. false

The GFCI might trip before the shock kills you but you can still fall
off the ladder


What was useless without the ground prong was the main circuit breaker which
would have tripped as soon as it was plugged in otherwise. (in actual, the
GFCI would have beat the panel breaker to the trip)

GFCI trip current is designed to be low and fast enough to minimize the jerk
reaction from a shock. They recognize already that most shock injuries are
secondary from the reaction.

Lets all hear it for plastic power tools and double insulation. Eliminates
the need for a ground.