[Matta0413]

I have been racking my brain trying to figure out why my boat is still tripping GFCI's. I have gone through everything to make sure the neutrals are dedicated to each circuit. I did find that all of the neutrals were on a single buss. So I installed a second neutral buss for Shore 2 and made sure everything on Shore 2 (AC unit) was terminated on this buss. I removed the neutral jumper that was installed behind the panel and ran a new wire from Shore 2 main breaker on the panel down to the newly installed neutral buss. But I am still tripping the GFCI as soon as the main breaker is thrown on the second circuit. So I still must have a shared neutral somewhere. The only place I can think of is the the A/C voltage meter on the panel, if it is only measuring the hot leg on the A/C circuit then it would have a shared neutral. Any thoughts?

Thanks for any replies.