Multiple controllers with parallel PV input from busbar

Q&A and troubleshooting
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already used it and the proposed solution of the calculator is not available with my dealer, my local victron dealer proposed me to use the 250/100 Controller with 3 strings of 4 modules (7.6kWp) and 2 strings of 4 modules (5kWp), but the engineering service of this dealer wich is different from the sales dept, tells me that i cant connect 7.6kW to a single controller.