That is the "new" plan ....3p / 3p .... Thanks allI understand, but he mentioned the current setup has been running for years in 2S2P, so either he is really lucky, or the controller is under rated. South Texas stays pretty warm, but I know they got cold temps this year when Texas was frozen. I don't think adding another two panels in 2S configuration is going to change the risk he is already taking?
The safe bet would be as you mentioned. Get a second controller and run both 3P.