Wrenches,
I have yet to do a Transformer-less inverter and am understanding that they are an ungrounded system and that both the positive and negative of each string will need to be disconnected. I started with the sma SB series and now find myself using mainly Enphase. The SMA TL dual mppt lighter weight inverter has my attention, especially with AB327 Knocking on the door but that's another topic. Jason West Coast Sustainables Jason Andrade C-46# 974647 (530) 410-4745 Cell (530) 241-7498 Office (530) 348-5301 Fax ja...@westcoastsustainables.com
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