I installed a 20A GFCI breaker on a circuit of 6 wall & counter outlets in kitchen and it trips instantly. I unplugged everything from the outlets and still trips. Then disconnected load and neutral from the GFCI breaker leaving only the neutral pigtail connected to the neutral bar and it trips instantly as well. The breaker does not trip with the pigtail disconnected and have tried another new breaker with same results. I assume there is a fault on one of the neutral wires on the bar with possibility of a ground wire touching a neutral wire and hoping there is a simple method of testing which one is the cause. I'm probably overlooking other factors but hoping I don't need to trace every circuit back to their loads.
Panel: Square D QOM2200VH MAIN BREAKER 200A
Breaker: GFCI is HOM120GFI
Thanks everyone for your feedback. There is a neutral line on the bus bar causing the issue and not isolated to the 6 kitchen outlets as I have tried on different circuits with same results. No matter what position in the panel I insert the GFCI breaker it will trip without any load just the pigtail connected to either of the two neutral bars. If I remove the pigtail from the bar and use as a regular breaker with a load it will not trip. I have tried three different new breakers from HD & Lowes with same results.