question

@patdufo1 you really need to go onto the xantrex forum as they will know more about the product you mention as this is purely a victron forum

The transformer is victron,xantrex does not know how to make these work the way they are supossed to,last email recieved said that there support tried 2 in the office and got the same error code of 48,if I cant get simple help of how to wire 2 inverters to it then I geuss victron will not be my first choice in the future

you are trying to combined two different systems and expect someone to know Exactly how the other system you intend to mix it with works, if the manufacturer can’t get it to work it could be the fact that it’s just not compatible?

The Autotransformer installation manual will have all of the available information for it - of course we cannot tell how to correctly wire it for Xantrex inverters, since Xantrex isn't supported by Victron, but your experienced systems installer should be able to work it out (if it's possible) from the manuals of all the associated components in tandem, perhaps with the help of the Autotransformer's associated system schematics.

I do sincerely hope that you have an experienced electrician performing this work, as tying anything at all directly to your house panel is incredibly dangerous if not performed to exacting specification and in compliance with applicable codes and regulations.

well I installed the panel a couple of years ago,I have wired several houses,disconected from grid wired the inverters into the panel which work well on there own(just not at the same time,one works one side the other works the other side)I wired in a new small electric panel from the grid to input the inverters also wired a 12kw system,60kwh lithium batteries(havent used grid power since march)wired a second system with 3000ah of forklift 24v batteries with a 6000 watt inverter to use charge the 48v lithium system if I have no sun for more than a week,also worked installing car audio(I have a 5000watt RMS system)So pretty much an expert on the DC side,my only real question is the bond I believe the ground relay is only for the quatro?So I think all I need is L1 from one inverter and L1 from the second into the autotrransformer,let the transformer make a new neutral and leave the bonding screw in the panel and pull the ato bonding screws from the inverter?thanks(also everything has breakers and or disconects)