When open circuit there will be no current, the current will flow first when the MPPT draws current from the panels.
If you plan for connecting two strings in parallel in the future then use two of the single string boxes above and one 2-to-1 box. The combiner boxes has glass fuses, surge protectors and an MCB for each input string and the combine of two string into one is done on the output of the MCB so you can at any time disable one of the combined strings.
Feeling smug. As I read Chapter 1, I thought (suspiciously) why was she carrying around 32K at that time of night? Then I read chapter 2. I bet I could get a job in Pattaya police force.
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