Thread: GFCI tripping
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Beachcomber
 
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Assuming the expresso machine is sitting on a nonconductive countertop
and it trips the GFCI as soon as you plug it in without you or anything
else touching it....

If it has a two prong plug it's probably the GFCI.

If it has a three prong plug it's probably the machine.

Like the previous poster said, try it on another GFCI, but not just
another outlet controlled by the same GFCI.


My guess is that the GFCI is OK and you have leakage either in the
downstream wiring or one of the appliances connected to the circuit.

GFCI's are calibrated to fairly tight tolerances and it just sounds
like it is working correctly and doing its job.

Remember, there are two ways a GFCI will trip.

1. A current difference in the hot and neutral wire of .005 A or
more.

2. A downstream connection between the neutral wire and the ground
wire.

Many are unaware of condition #2, but this is the reason that there is
a 2nd toroidal transformer in the GFCI. Another safety feature.

Beachcomber