TOP SOLAR CABLE AMP RATING SECRETS

I've a canal boat with 6 x 350wat solar panels, and four 12v 300amp lithium batteries. They're connected in a very 24v circuit.Also I will need a fuse involving the battery bank plus the inverter. Any diagrams that you could possibly deliver me might be appreciated. Fuse types and sizes would aid if you might send out me them also. Many thanks.With