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Heh, turns out Michigan goes by 2 different NEC rule sets (2014 or 2017) depending on whether you are in a commercial building or a residential one. It appears I only have to meet the 2014 rules which allow for 80 volts within 10 feet of the array and 5 feet of the building entry point. The...

Just to clarify - my planned cutoff switch location would be on the same external wall as where the utility power comes in, and basically at eye-level. My lowest solar panel, measured 4 feet down from there, would put the switch at that height. And horizontally, it would be like 8 feet away...

I am installing my own DIY system which consists of 6x 100-watt panels wired in series groups of 2 each to create a 24v system. These will go on my garage roof, into my garage, and into a charge controller (which then feeds a small battery bank of 2 batteries in series, about 2500w total...