Good day Family

I just read something that crooked my mind..i had this knowledge that to find proper Battery Fuses Disconnectors sizes you need to devide Inverter Capacity ie Wattage with Nominal Voltage of the Battery 

Example 10 kw inverter divided by 48v of the battery which gives 208

Now i came across this whereby it says Continuous Power Rating of the Inverter devided by Lowest Voltage of the battery,i assume thats Cut off Voltage and Devide by 0.85

How do you do it exactly

Thank you

The fuse rating is determined by the wire size.

The wire size is determined by the maximum continuous current, which could be limited by either the batteries or the inverter, and will be specified in the relevant manuals.

Any calculations you do will at best be rough estimates, and could at best be used in initial planning. But for implementation, use what is in the manual.