What's the tiniest 240v RC snubber or LC Filter have you professionals used in your customers or seen in the industry that one can plug into existing GFCI receptacle that can nuisance trip on any motors.
My elderly bathroom 240v GFCI receptacle kept tripping on the small black electric fan. They want me to remove the outlet, but I need it as backup to the full house GFCI breakers (in case they fail).
However, in the previous discussions with others here. If I add an LC filter, it no longer trip. But the LC filter I had was huge (a long power strip, not appropriate for bathroom used as it can cause shock).
The LC filter works because gar explained it can flatten the energy of the magnetic field.
Btw.. I have a related question. In normal GFCI circuit, it works like this:
In my case, gar told me to put the ac input to the load side with ac input open. And it still tripped:
My elderly bathroom 240v GFCI receptacle kept tripping on the small black electric fan. They want me to remove the outlet, but I need it as backup to the full house GFCI breakers (in case they fail).
However, in the previous discussions with others here. If I add an LC filter, it no longer trip. But the LC filter I had was huge (a long power strip, not appropriate for bathroom used as it can cause shock).
The LC filter works because gar explained it can flatten the energy of the magnetic field.
Btw.. I have a related question. In normal GFCI circuit, it works like this:
In my case, gar told me to put the ac input to the load side with ac input open. And it still tripped:
Say. Can transient still affect the sense coil even if the input ends are open and no load to cause current flow??
My motor and gfci sample is already with gar however he couldn't test it with oscilloscope yet because of some unrelated problems.
I was not supposed to start this thread and just append to existing gfci threads but then a tiny RC snubber or LC filter to plug into existing nuisance tripping GFCI outlet would be very useful for many to stop all the trippings cause by faulty circuit design (I say faulty because it is possible to design GFCI products that never trip like the Siemens GFCI breakers. This is one reason I want the motor and gfci sample analyzed fully so the nuisance tripping circuit fault design details can be shared to IEEE and they make sure manufacturers would never create faulty gfci products again. Don't you consider it faulty, Nuisance tripping without actual current leakage is not supposed to happen as it can mask real current leakage that one can blame on nuisance tripping. Very dangerous.My motor and gfci sample is already with gar however he couldn't test it with oscilloscope yet because of some unrelated problems.
