Regarding wire sizing
Well, finally pulled the trigger and ordered some components at long last. To start off, phase 1 of system is 24v bank, a pair of Canadian solar poly 250s, a classic 150, and a midnite combiner box. The maximum planned upgrades will be up to another six of those same panels. The last thing to figure out is the wire sizes and breakers. Seeing as I don't want to run the wires twice, I am looking to lay the ones which will handle the eight eventual panels. The bank voltage will remain the same, so what size wire should I run from combiner box to the CC? The run is 50'. I was told the classic 150 handles up to 4awg, (is that correct? ) but I'm guessing the wire run might be at least 2awg?, and if that's the case, what is typically used to downsize the wire? And for the initial pair of panels, how should I size the breakers for the CC? Also, the phase 1 inverter is going to be a samlex 600w, either the pst or the sa... Anyone have comments on either one being a better choice?
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