kwired
Electron manager
- Location
- NE Nebraska
If you added said test ground leakage to a circuit that already had 3mA of capacitive leakage you just exceeded GFCI trip threshold even though nothing was technically wrong with anything.That should have been EGC (Equipment Grounding Conductor)
For example (a poor mans tester) I put a 30k 3watt resistor in a cord cap wired hot to equipment ground, that pulls .004 amps @ 120V, just below the level a GFCl should trip.
If the GFCI trips at that level I say its defective and return it.
Or put two in series for a .002 Amp load (2ma).
With that nice fluke tester and standard test conditions I dont know how the manufacturer could stand behind their product and say it works.
Same thing can happen with a circuit that has same 3mA of capacitive leakage and you then plug in some item that has 4 mA of leakage even though it won't trip when plugged in someplace else that doesn't have the 3 mA of leakage in the circuit already.
And we do have problems with items not being GFCI compatible these days, though the biggest common offenders which are variable electronic speed controlled motor driven loads don't seem to be mentioned in OP.