Small house DESS with blackout option - 4,5 kWp - 9,8 kWh

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Hello @BjoernK . I agree with you. Tried both options (AIC Ratings for LiFePO4 - Class T - MRBF - #15 by B51-technician) and opted for the Class-T finally. Just to be max. safe in regards to arcing and speed. An Adler AF3 might have done it as well for little money.