Proper wiring for adding additional lifepo4 battery bank.

[henglenn]

I have an 18kpv connected to 6 lifepo4 batteries in the eg4 battery rack. I will be adding another 6 batteries with another rack. The question I have is what is the best way to wire them together? Does it matter where the connections are made? I am wondering should the positive connection to the inverter start next to the first battery bus bar and negative connect at the last battery bus?

 

[DIYrich]

Inverter -> breaker/fuse for inverter wire -> Busbar
Busbar -> class t fuse -> Rack 1*
Busbar -> class t fuse -> Rack 2*

* alternate:
Busbar -> Rack
Rack -> class t fuse -> lifepo4 battery 1
Rack -> calss t fuse -> lifepo4 battery 2
etc.

 

[henglenn]

Since the 18kpv has 2 battery inputs would this be okay?
Inverter ->
breaker/fuse for inverter wire ->> class t fuse -> Rack 1*
breaker/fuse for inverter wire ->> class t fuse -> Rack 2*

 

[DIYrich]

Yes. That would work well. You can skip the inverter breaker fuse with a single connection.