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
From what I saw of your new system, a 30A will work fine, even if you add another panel. While you are at it, you should also have one on your battery to inverter side too, depending on the size of your cable, as well as your inverter.