July 20, 20251 yr Good day,I bought a house with exciting solar system. I replaced the inverter with Sunsynk 8kw inverter. The PV panels on the roof are 12x 300watt, and 3x 5.1kw batteries. I am in the process to replace the panels and, bought 10 x JA solar panels 610watt. What will be the best and easiest way to connect these panels?What I can see the 12 x 300 been connected in 2 strings. Can just connect these 10 panels in 2 strings as well?Reason for replacing the panels, takes the whole day to charge the batteries.RegardsMorne
July 20, 20251 yr Sunsynk 8 kW should be rated at 22A per string, 450V max, so five in series on a string will be fine
July 20, 20251 yr Author 32 minutes ago, Tariq said:Sunsynk 8 kW should be rated at 22A per string, 450V max, so five in series on a string will be fineThank you, and will this be okey to connect only to the 1 MPPT? I have combiner box installed.
July 20, 20251 yr 1 hour ago, Morne van der Merwe said:Thank you, and will this be okey to connect only to the 1 MPPT? I have combiner box installed.Check the maximum open circuit voltage in the solar panel specification. I suspect that you would not be able to install more than 8 panels in series on one string without exceeding the maximum MPPT voltage. I would suggest that you buy another two (or four...) panels and install two strings of 6 or 7 panels per string. Although five panels per string would work OK, the higher voltage of 6 or 7 (or 8...) panels per string would make the system more efficient, and would reach the MPPT start-up voltage earlier in the mornings as well.
July 20, 20251 yr Author 3 hours ago, HennieL said:Check the maximum open circuit voltage in the solar panel specification. I suspect that you would not be able to install more than 8 panels in series on one string without exceeding the maximum MPPT voltage. I would suggest that you buy another two (or four...) panels and install two strings of 6 or 7 panels per string. Although five panels per string would work OK, the higher voltage of 6 or 7 (or 8...) panels per string would make the system more efficient, and would reach the MPPT start-up voltage earlier in the mornings as well.Thank you for the advice.
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