gar
Senior Member
- Location
- Ann Arbor, Michigan
- Occupation
- EE
090418-0903 EST
PetrosA:
I would run the following experiment on the bench.
Use a new Leviton 7899 GFCI (the only reason for this device is I have experimental experience with it). Supply this with hot, neutral, and EGC.
Connect your motion sensor and controlled by the motion sensor an incandescent. The motion sensor EGC wire should connect to the GFCI EGC. Does this trip the GFCI?
If it does, then disconnect the motion sensor EGC wire from anything. Now does the GFCI trip? It will not. If the motion sensor with EGC connected caused tripping, then the motion sensor is a problem.
Without the motion sensor do the same experiment as above but with the LED fixtures. Use the same number of LED fixtures as in your application. What are the results.
If none of these caused tripping, then connect both the motion sensor and LEDs and see what happens.
My guess is that either the motion sensor or the LEDs had some filter capacitors or other leakage to the EGC, and this is what caused the GFCI tripping. Or you have a GFCI that has high frequency sensitivity that I have not found with the Leviton mention above.
.
PetrosA:
I would run the following experiment on the bench.
Use a new Leviton 7899 GFCI (the only reason for this device is I have experimental experience with it). Supply this with hot, neutral, and EGC.
Connect your motion sensor and controlled by the motion sensor an incandescent. The motion sensor EGC wire should connect to the GFCI EGC. Does this trip the GFCI?
If it does, then disconnect the motion sensor EGC wire from anything. Now does the GFCI trip? It will not. If the motion sensor with EGC connected caused tripping, then the motion sensor is a problem.
Without the motion sensor do the same experiment as above but with the LED fixtures. Use the same number of LED fixtures as in your application. What are the results.
If none of these caused tripping, then connect both the motion sensor and LEDs and see what happens.
My guess is that either the motion sensor or the LEDs had some filter capacitors or other leakage to the EGC, and this is what caused the GFCI tripping. Or you have a GFCI that has high frequency sensitivity that I have not found with the Leviton mention above.
.