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Powerwall 2: backup function in a 3 phases installation

Powerwall 2: backup function in a 3 phases installation

Hello everybody,

I recently installed 3 Powerwall2 batteries with the Powerwall Gateway. I'm living in Switzerland. The electrical installation is using 3 phases in my country. I installed one Powerwall on each phase. The Gateway and the Powerwall have the lastes firmwares. When I run the configurator / installer, I can only check the backup functionnality for 1 phase, and not for all the 3 phases. Has anybody an idea how to bypass this limitation and/or why there is such limitation?

Thanks in advance for your support.

Kind regards