Looking around online I see Fronius Primo GEN24 with an external transfer switch to switch to battery power when grid goes down. I also see an automatic version but that is is 3 phase.
I always thought, if I had a Fronius primo GEN24 PLUS and a BYD Premium Battery HVS I could power my house when the grid goes down. The sales person I spoke to of a webshop says I need a backup box?
Do I need a backup box?
What is the model nr of this backup box?
What is the switchover time?
My mates have Solplanet with a battery and when the grid goes down, all their outlets continue to work and the lights don’t even flicker. Works amazing but I would prefer a Fornius.
Thank you in advance!