I am interested in a topic on how to connect a Generac Home back-up generator with a automatic transfer switch, up to my off grid BluePower SP6548 240v split phase setup, so as to be able to charge my 48v/48kW battery pack. The way the generator is wired, if I apply the generator to the Inverter and set the inverter to shut down the batteries the transfer switch will start the generator which takes the load but sends the power back to the panel which drops the generator back off and the transfer switch just keeps recycling. I have reached out to Generac and SunGold Power on the subject and none of the techs can help. The problem is I can't get any info on the SP6548's Dry Contact set-up that works in conjunction with the Generac auto tranfer switch. I was able to install a toggle switch on the transfer switch wire that will open the normaly closed transfer switch manually, allowing the generator to start, warm up and send power to the inverter to charge the batteries. But it has to be turned on & off manually. If you or any of your followers have any ideas or if there are any others that are interested in this subject, I would be greatful for any help on the issue.