I’ve had my MPAN number confirmed here in the uk and fingers crossed it all should be set up on Saturday. What do I need to toggle to export back my excess electric. The AC or DC or both. Thanks
Congratulations!
Is your mppt ac coupled (like a fronius and connected to the 230v supply) - then ac is enabled.
If it connected to the dc (battery side) and bus bars then enable dc.
If you have both then both.
In all honesty nothing bad happens if you do both and you don’t have both.
Just as an FYI as soon as that is enabled a whole lot of other items appear there in that menu.
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Thanks. So if I’m looking at it right my mppt goes to the battery busbar first so it’s dc.
I’ve drawn over it very badly in red 
Its perfect, 
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Definitely a DC MPPT.
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Brilliant. Thank you very much for your help.