Newbie seeking fuse size recommendation.

[Jay78]

Nex week I'm buying a 12v 280Ah Lifepo4 with a max discharge current of 200A. I have 4/0 gauge-9 inch positive and negative cables which will run to the 300A max bus bars. I am getting a 2000w inverter to go with it. I am still learning about solar, and although I have came a long ways this stuff is still confusing and controversial sometimes. What size fuse would you use for a battery main fuse?

 

[robbob2112]

2000/12.8*1.25=195a...so 200amps

Your wire is what you are protecting so you could also fuse for it.