I think that is a common problem with a hard wired EMS and Generator operation. I've read of the problem on the MOC Forum and I believe there is a work-around, but since I have a Portable EMS I never really paid that close attention. It has to do with bonding the Neutral and Ground together but again, not exactly sure where it's done. My guess is that you didn't do anything wrong, it's just that the EMS is looking at the neutral and gound. Sorry I couldn't be of more help.
Michelle & Ann
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