Fuse size?
I need to put a fuse in the positive line between battery and solar controller. I currently have 100 watts but may go to 200. Will a 30 amp fuse be enough? Thanks.............DJ
Forum Discussion
The wire is larger in a PV "SOLAR" system because of line voltage drop, the further the distance the more drop
A 100 watt PV panel is probably a 17 volt panel , watts divided by volts is amps , 100 divided by 17 = 5.9 amps , that can surge a small % higher than that in extreme condition
In this
chart , third one down , you can see why you have to use larger wire
With one 100 watt panel and a 10 amp charge controller Id use a 10 amp fuse within one foot of the battery , a larger one would work but wouldnt trip until 30 amps was exceeded
A 100 watt PV panel is probably a 17 volt panel , watts divided by volts is amps , 100 divided by 17 = 5.9 amps , that can surge a small % higher than that in extreme condition
In this
chart , third one down , you can see why you have to use larger wire
With one 100 watt panel and a 10 amp charge controller Id use a 10 amp fuse within one foot of the battery , a larger one would work but wouldnt trip until 30 amps was exceeded
