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Ground fault outlet didn't trip

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Subject Author Date
Ground fault outlet didn't trip <Frank> 06-14-2008
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Posted by Me on June 14, 2008, 2:30 pm
beware, it could be Vincent Price with the Tingler!

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Posted by John Grabowski on June 14, 2008, 3:32 pm

<Frank> wrote in message
> Did some wet diamond grinding with my electric angle grinder (double
> insulated) on a concrete walkway in the backyard. Felt a tingle on my hand
> but the GFCI outlet didn't trip, must be too low of a fault current.
>

Push the test button and see if it trips.


Posted by Ralph Mowery on June 14, 2008, 5:08 pm

<Frank> wrote in message
> Did some wet diamond grinding with my electric angle grinder (double
> insulated) on a concrete walkway in the backyard. Felt a tingle on my hand
> but the GFCI outlet didn't trip, must be too low of a fault current.

The GFCI is suspose to trip at 5 ma. Most people can feel currents as small
as 1 or 2 ma. The test button is set for about 8 ma. Incase you don't hae
a point of refferance, a 100 watt light bulb will need about 1 amp of
current to light. A ma is .001 of an amp. Up to about 10 ma on the outside
of the skin is usually safe but it might start being painful. Get up to 50
to 100 ma and you could die. Those are very rough numbers.




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