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RBM[_3_] RBM[_3_] is offline
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Default Spa GFCI Trips with 120VAC load. What next?


"jg" wrote in message
...
This project just keeps getting more interesting....

So tonight I troubleshooted some more. Here are my steps and
findings.

New tests:
1. I disconnected the hot wire from one of the 7 or so devices. I
supplied power.
GFCI did not trip. Excellent news.
2. Just for grins I connected the 120 device from step 1.
GFCI did not trip. This is weird!
3. So I connected all the external connections (blower, motor, etc.,)
set the heat to the lowest setting and supplied power.
GFCI did not trip. Even more weird!
4. I figured something must have been damp... so I left everything
running and started putting the panel back on.
Half way through my first screw, GFCI trips again. Bummer.
5. So I open up the panel and disconnect the motor. I then supply
power.
GFCI does not trip.
6. If I connect the motor back on and once again supply power
GFCI trips.
7. I repeated 5 and 6.
Same results as the first time around for 5 and 6.
8. So I rotate the clock so as to have the motor not run (it it set
to only run at certain times of the day) and repeat steps 5 and 6.
Now the GFCI does not trip.
9. With motor connected and power supplied, as soon as I rotate timer
to supply power to motor...
GFCI trips.

Conclusion:
So now evidence points to a faulty motor.... but the interesting
things is, that up until now, all my other tests (and GFCI trippings)
have been with the motor disconnected. Of this I am 100% sure.

So do I have a faulty GFCI? It is starting to look that way. I am
thinking of bypassing it next. However before I do that, I will
replace the external GFCI just in case.....

Anybody have any other suggestions/ideas?

jg





Once again supplied power and as long as the motor is not running (I
have it on a timer) it is all good. However, as soon as I rotate the
clock (to supply power to the motor) GFCI trips again. So now
evidence points to the motor