Neat GFCI Experiment

[jtedesco1]

Bump!

[Frank M. Carrio, CMI]

Try this link.

http://www.youtube.com/watch?v=MhW9VNzME0w

[Michael Larson]

Originally Posted by fcarrio

Try this link.

http://www.youtube.com/watch?v=MhW9VNzME0w

Neat

Frank, do you understand why it doesn't trip the GFCI until it's flushed?

Think about it.

[Brian A. MacNeish]

Originally Posted by Marc D. Shunk

There is no such thing as nuisance tripping, and there never was. There is, and always was, "reason tripping". It's not always clear what the reason is, so people term it a nuisance. Proper testing will always reveal the reason. Sump pump or a refrigerator that trips a GFCI is doing so for a very valid reason, which is quite measurable and demonstrable.

We have a little different situation where I live along the North Atlantic coast- heavy wind driven rains, fog and prolonged damp periods cause what we call "nuisance tripping" without the GFCI circuits even being utilized. The high moisture/fog conditions or wind driven rain entry cause a short to ground somehow and trip the GFCI device whether integral to the receptacle or in a CFCI panel breaker.

On my own house (built in 1987), two protected circuits -one for the outside receptacles and one for the bathroom receptcles-older code here from 1987) are required for this protection. Whenever I go to use any of the exterior receptacles, I check the CFCI breaker at the panel as 60%+ of the time, it's "nuisance" tripped

Before this change, both the outdoor and bathroom receptacles could be on the same CFCI protected circuit but this presented nuisance problems....if an outdoor receptacle "moisture event" caused a trip of the device, the bathroom receptacles would be dead and had to be reset (a real pi$$-off when you woke up late and had to rush in the morning!) . It became enough of a problem that in 1987, the code changed to have these recptacles placed on separate protected circuits so that when the outside "nuisance tripped" you still had power to the bath/washroom recepts.

Yes, there is a reason but you could not correct it and still can't even with today's equipment.