Inverter tripping when EV Charger switched on during the day
I've just added a single phase Anderson A2 EV charger (7kw) into my Sunsynk system (8kw invertor/ 2 x 5.2 lithium Battery packs / 6 kw array); when there is low generation from the Solar panels and I connect the car then I have no issues, the EV charger draws from both mains and battery, which I'm ok with. However when the Solar is delivering say 3kw or more and the EV is on then the MK B20 (MK5920S) fuse trips and from that point the Inverter switches off and the EV then draws from the gird. The inverter requiring a reset (to be expected) before coming back on line.
What do I need to do as I'd prefer not to switch Solar / Batteries and my objective in this was to where possible use the solar to charge my car insofar as is possible.
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thank you and will do.