So I got worried about how my inverter was going to be wired and reached out to Redodo for clarification. They said to wire it like in option 1 (ground, load, neutral), and not use one of the hot lines. I elected to purchase a Furion 50 amp ATS and am in the process of putting it all together. Since my inverter has a built in charger, which I want to use, from what I understand I will wire in a hot, neutral, and ground from the shore power side of the ATS, and then route that to the input of my inverter. Does that sound correct?