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Hello. I don't see anything here, on Will's site, or in the book about using a fuse between panels and controller. It's listed as a recommended fuse location on various other sites https://www.renogy.com/blog/how-to-fuse-your-solar-system/ but wondering what you do? Since I'm basing all of my...

On a 400w (4x100w panel system) in this video why are so many branch adapters required? Can't I simply plug + and - MC4 connector directly without any additional adapter(s) from each series pair and then use a Branch Y Connector in (MMF+FFM) so that I up with one + lead and one - lead? In...