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supplying monophase inverter to three phase grid

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hamsiii

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Hello all,

I have a 5kW 220Vac solar inverter that should be connected to the grid.

First off all, are all main distribution boards have three phase busbars? If so, would there be an unbalanced power distribution over 3 busbars with only one single phase inverter connected? How will it affect the grid?

Secondly, should I connect the inverter output to for instance 2. floor distribution board if all components (MCB and RCD values) and cable sizes are suitable? Is it necessary to connect to main distribution board or to the transformer directly?

Thanks in advance.
 

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