I have 48 Old ( 2008 or so ) SunPower 215 watt modules on ground racks wired to two SMA SunPower 5000 transformer inverters in 24 modules for each SMA " SunPower " 5000 watt Inverter . Question Which Tigo DC optimizer should I use and what are steps 1- whatever to modify the two positively grounded SMA 5000 inverters to negatively grounded Tigos . ???Thanks GatorTom Oops Monitoring Suggestions also .
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