I need help with Lithium upgrade

[mfoote]

I have 2021 Globetrotter 27 FB with 2 factory installed Zamp solar panels and dual A/C (50 amp)

I installed 3 x 100 amp hour Lithium batteries, removed the factory converter
and installed a new WFCO converter 9855 Lis, Removed factory 1000 watt inverter and installed a new 3000 watt unit and finished up with a new power max 50 amp automatic transfer switch.

I have left the the factory Victron solar charge controller in place as it will work with what I have plus a 200 watt solar suit case.

I have installed the Micro aire easy start on the bedroom A/C unit.

I would like to have the option of being able to run all A/C plugs power items and single air conditioner (not all at the same time) when needed to while boon docking. Air conditioner just to take edge off occasionally on real hot days.

I ran 10/2 wire from inverter to the transfer switch.
I cut the shore power wire and put both ends in the transfer switch (end from the plug to the other input and the other end on the output side to continue to the circuit breaker panel)

Problem one: I have 120 volt making it to one side (right side) on the 2 pole 50 amp main breaker and continuing on the feed to the 3 breakers on that side of the
panel but I'm not getting power at all of the receptacles associated with those breakers.

Problem two: How do I get inverter power to the breakers on the left side of the main 2 pole 50 amp breaker.

I've attached pictures to show what I have

Any help would be appreciated

Again I'm NOT trying run both A/C's or the one A/C continuously when on batteries I know I'd need much larger battery bank for that

[SHaley]

Got schematic or diagram?

[richard5933]

Your trailer is 50-amp? With two hot legs powering the breaker panel?

And your inverter is only outputting one hot leg?

If this is the situation there are lots of ways to get where you want to go, the easiest being using a Victron Multiplus 120x2 inverter which automatically can swap between 50a and 30a service, and will provide power to both sides of your breaker panel all the time.

There are also many ways to wire a manual transfer switch so that the output from the inverter feeds both legs of the breaker panel.

One thing to be aware of is that you need to handle the neutral/ground bonding properly. When on shore power the trailers neutral & ground are not bonded, but they should be in the inverter. For this reason, when you switch between your shore power feed and the inverter feed you also need to be switching the neutral.