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Problem is the inverters only allow setting at either 209,220,230,240 So I guess it means I'm stuck with finding a step down 3 phase transformer ?? Thoughts

There is no continuity .. the left is the loads neutral common bar used between the 3 inverters in 3 phase .. the right bar is utility neutral for bypass only (it's disconnected until I can get the inverters to power my 3 phase 240 v well pump) ..until I use it for AC into the inverters .. then...

Yes my pump will run .. 208-230.. and I measured in two ways 1) at the 3 phase breaker L1-L2, l1-l3, l2-l3.. 360v on each 2) connected the wiring directly from the 3 phase breaker through the old pump wiring .. 3 female pronged , turned the breaker on .. each was same L1-L2, l1-l3, l2-l3.. 360v...

Right..thanks

Yes common between all 3 inverters in three phase and grounded

Correct

Each inverter is using one hot leg a.c. out for each phase.. all into a three phase circuit breaker .. cabling between inverters has them communicate. The other hot (when each is only doing 1 phase ) is identified in 3 phase as a neutral and are common and grounded

The nothing bar is the common neutral connection between the three inverters while in 3 phase mode (when not in 3 phase each inverter has two hots and a ground n,l are the hots g is the ground. When in 3 phase the three "n" (one from each inverter) are connected and grounded.

I have three hots no neutral

Straight from solar panels and 600 amp hrs of 48 v LiFePO4 .. from signature solar

Ac out inverter source Neutral grounded

I see that. So what should the actual output s the remaining inverter if disconnected from 3 phase will be 230-240 output with two hots .. but my motor is three phase 240.. are you saying single phase 240v can run 3 phase 240v motor

I see that. The pictures I included show I've set that feature to 209 not 230. If I go back and reset the features to 230 .. I'm going to end up with over 400 v line to line

Each inverter in single phase (before being hooked up 3phase) has 3 output G,N,L .. essentially two hots and a ground. Growatt specify I hooked up a common wire between the three neutral lines and ground it. .. so my multimeter read 208 to neutral but 360 line to line

Pg 16 setting 08, Pg 18 setting 23