April 15, 20197 yr Hi all the solar experts, I want to upgrade from a Mecer Sol -I -AX -5M 4Kw unit to a Goodwe 5048D -ES system. Currently I have 12x 260w JA solar panels, giving me just over 3 KW on the roof, since that is the max my current inverter can handle. The Goodwe has 2x MPPT charge controllers each able to handle 550V and 11 A and is capable to be connected to a total of 6000 w on the roof and can deliver 4.6 kW AC power to the house. The idea is to connect all 12 of the existing panels in series to one MPPT units and install 3 kW more capacity on the roof for the second MPPT input. Question is: Must the second bank of panels be the exact same layout of 12x 260w JA panels or can it be 10x 320w panels for instance? I also intent to add two more Pylontech US200B plus batteries to the two existing ones. Any advice will be highly appreciated. Regards
April 16, 20197 yr 10 hours ago, ZOL said: Must the second bank of panels be the exact same layout of 12x 260w JA panels or can it be 10x 320w panels for instance? They're completely independent, so that should be fine. Another advantage of dual MPPT inverters; in an upgrade (if you haven't used the second MPPT yet), you don't need to match panels.
April 16, 20197 yr Author Thanks for confirming what I expected Coulomb! It will make life a little easier.
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