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Rule for Combining AC and DC coupling in off grid system

Hello @Guy Stewart (Victron Community Manager) and @Alexandra,

I would like to know how much DC coupling to apply in an AC off grid system for a well balanced system.

Does the amount of power to be installed on the DC side in an off-grid AC system depend on the capacity of the batteries? If so, what should be the power on the DC side, to avoid the batteries being flat? If there is a generator, is it necessary to add a DC coupling, or would it be interesting to start the generator automatically in case of low batteries?

Thank you

AC PV Coupling
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Guy Stewart (Victron Community Manager) answered ·
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