I am having an issue with the Quattro series of inverters (5K and 10K) where everything works great when inverting from batteries but as soon as we switch to an AC source we get 5v neutral to ground.
When the inverter is checking the incoming voltage I see the full 120v but as soon as it switches to the external AC source the voltage on line drops by 5v and I have 5v on neutral. This in turn will cause a GFCI outlet to trip if I am pulling 120v from a wall outlet (maintenance charge for a large system.)
Is this something I have to live with or is there a setting I can adjust to avoid this problem?