If I go over XW60 150v specs...
Currently I have 4 panels of evergreen ES-A-205w 12v(820watts) going 80ft (8ga cable) to my Xantrex XW60 150volt mppt charge controller. I calculated % voltage drop. I want to add 2 more panels making all 6 in series through my 80ft 8 gauge cable. Using the Xantrex sizing tables if I run 6 panels in series I will be hitting the max voltage (150v) when temps get <20degF. I don't want to upgrade the 80ft 8ga run to handle the amps if run in parallel. My winter temps will probbaly only get <20degF a few times a year. So what happens when the volts exceed charge controller max 150v for that few days a year? Damage or just loss? Seems like I can do this since I wont be hitting the mppt input 150v max 99% of the year.
Off Grid Cabin, 24V 440ah 6V GC battery bank, Xantrex MPPT60-150 CC, Magnum MS4024 inverter-charger, >1200w Solar bank
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