Inverters and fusing

[azgrogg]

I have a question regarding inverters and I am wanting to calculate out the fuse I should use.

For the following example, lets use a 1000 watt inverter that has a surge capacity of 2000 watts.

For a 12 vdc system, I assume I take the 2000 watt surge and divide by 12 (2000/12) and get 167 so I would use a 200 amp fuse.
For a 24 vdc system, I would divide 2000 by 24 (2000/24) and get 84 so I would use a 100 amp fuse.

Am I thinking of this correctly?

 

[nightcrawler]

You want to size your fuses based on the gauge of wire you are using. Typically you will want to match the wire ampacity to what the inverter will be able to pull. Figure out the gauge of wire first and fuse accordingly.