Whats the diffrence between using different AGU fuses (5-80 amps) in fuse holders. Can i always go higher, is that good or bad? Thanks

 

Theres this thing called OHMS law, it defines the relationships between power, voltage, current, and resistance. One ohm is the resistance value through which one volt will maintain a current of one ampere.

Lets say you have 400 Watts, and 14.4 volts of electricity. You would divide the Power by the volts to get the amps, or current. Thats how you would detirmine what fuse a circuit would need.

 

You can go higher if your amp requires it. But if you do go higher, is your wiring big enough to accomodate more current flow???