Upgrading to Growatt 12k Invertter and have a couple questions.

[Schweg2]

Guys. I’m swapping out my Mpp 5048 for some more power, going from a 5kw to 12kw will I need to upgrade my battery bms and fuses?
I currently have 2 - 48v 280ah battery packs with the Jbd 200a BMS on each pack. 200a fuses protecing each battery and 2/0 battery cables.

What do I need to upgrade to? I’m hoping to get by with bms if all possible.

Thanks

 

[Browse]

12k at 48VDC is around 250A total or 125A per battery. The question is how much peak power will you need? I have the Growatt 12k powering my panel via a 30A breaker, so I only see around 130 amps total from my (4) 5kWh batteries total. I have a 200A fuse between the rack and the inverter. Your fuse should be rated for the wire you are using. I'm using 1 AWG.