Solar combiner box questions
I'm looking for a solar panel combiner box for the RV's roof. I'm going to start with 2 panels with the option to add 2 more if needed. I've seen some that are stupid expensive and some that aren'...
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I also used a grey electrical box and painted it with uv protection paint. I didn't want to cut off the mc4 connectors so I made my box so the panels plug in to them.
It is my understanding that you don't need to fuse the individual legs of the panels until you have enough panels that the amp rating could be above 'max series fuse rating'. On mine this is 15A so 3 panels is fine (5a each) but if I go to 4 then I need to fuse the individual legs. I'm not an expert on this so maybe someone will come along and correct me.
below is the box I came up with. Of course if you wire them in series you don't need a box at all.
It is my understanding that you don't need to fuse the individual legs of the panels until you have enough panels that the amp rating could be above 'max series fuse rating'. On mine this is 15A so 3 panels is fine (5a each) but if I go to 4 then I need to fuse the individual legs. I'm not an expert on this so maybe someone will come along and correct me.
below is the box I came up with. Of course if you wire them in series you don't need a box at all.
