I'm attempting to replace the outlets above my kitchen counters after doing some remodeling. The old outlets were likely from the 1960's and I'm replacing them with 15 amp GFCI outlets.
We have 3 boxes above the counters plus one for the fridge on the same run:
Box A: 1 outlet
Box B: 1 outlet
Box C: 2 switches (undercab LED's, professionally installed and working before this, old florescent above sink) and one outlet.
Box D: 1 outlet for refrigerator. Appears to be downstream from Box C which has black & white pigtails. I unplugged the fridge before doing any of this.
I started by identifying line and load and working my way around, testing one by one. I wired up Outlet A, tested reset & with a lamp. Wired up Outlet B, tested reset & with a lamp. Wired up first switch in box C (undercab lights) and tested. Wired up second switch (florescent) & tested.
Now I had read old refrigerators and florescents can trip GFCI breakers so I wanted to test that. I knew the florescent worked so I turned it off, plugged in the fridge, and waited for it to kick on. That worked fine. With the fridge on I then attempted to turn on the florescent - it tripped the GFCI outlet in Box A.
I unplugged the fridge and turned off the switches and attempted to reset the GFCI - it wouldn't reset.
I slowly worked my way backwards, unwiring everything I had done in reverse order and attempted to reset the GFCI outlet each step - same thing, a quick flash of the red LED and it won't reset.
I got all the way down to Box A and proceeded to disconnect the the white & black load wires from the outlet - it allowed me to reset and the green LED came on.
I don't understand why having the load wires simply connected to the terminals while nothing is active (or even wired) downstream would trip the GFCI. I even proceeded to completely disconnect the florescent and undercabs despite the switches being removed.
Any tips would be appreciated, thanks.