You got three series connections in each string, plus four strings. So you got 12 series connections - double the amount of series connections I got.
I could reduce my series connections to three. But my inverters need 720 amps at full surge load. So I'd have to use a lot bigger wires from the bank to the bus if I cut my series connections to three.
At full rated load, my inverters pull 360 amps. Each sub-bank of four batteries has to deliver 60 amps to the bus, which requires 30 amps from each battery. Each one of my batteries, from 100% SOC, can deliver the 30 amps for 2 hours and still be at 60% SOC. For us this is important because we have electric clothes dryer and range (240 volt). If the bank couldn't deliver the required kW to the inverters like when my wife puts a load of clothes in the dryer, the generator would start on peak load management all the time. We have plenty of battery capacity to run it, but it takes the six parallel feeds to the bus to keep the voltage up at the bus with the inverters at full load.
So in a nutshell, our setup is way different than yours because I have designed ours to run 8 kW loads with no incoming power.
Edit:
Wolv, I should clarify that our batteries are 12 volt, not 6 volt. Let's say you had 24 batteries. So you'd have six series strings. At 360 amp load each string would have to deliver 60 amps just like mine do. Except with the six volts and three series connections to make 24 volts, each of your batteries has to deliver 60 amps. With the 12 volt batteries each one has to deliver 30 amps.
You would need 400 ah 6 volt batteries to have the same kW capacity as our 200 ah 12 volt batteries.
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Chris