Our first Powerwall 2 was installed back in 2018 and now my 2nd Powerwall 2 is being installed. I've been been told by my installer (not Tesla, as I'm in Canada where installs are done by certified 3rd parties) that since each Powerwall has a 30A breaker, along with my 7.3kW solar array, I would be exceeding the capacity of my 200A main panel bus bars. To avoid this problem, they suggest that I reduce the capacity of the breaker in my main panel.
So it seems that the installer is configuring the 2 Powerwalls so that my backup load capacity is doubled (ie. 10kW vs 5kW). But what I really wanted from installing the 2nd Powerwall was to double my backup storage so that we could endure longer grid outages. I don't care about having 10kW of simultaneous backup loads, I'm happy with 5kW.
Does any one here know whether the Powerwalls could be configured in a "round robin" configuration, so that in a backup situation, when one Powerwall is close to being depleted it switches over to the 2nd Powerwall? If this is possible then my installation delay would be eliminated, as they're now stuck waiting for back-ordered breakers which may take months to arrive during this pandemic supply chain nightmare.
So it seems that the installer is configuring the 2 Powerwalls so that my backup load capacity is doubled (ie. 10kW vs 5kW). But what I really wanted from installing the 2nd Powerwall was to double my backup storage so that we could endure longer grid outages. I don't care about having 10kW of simultaneous backup loads, I'm happy with 5kW.
Does any one here know whether the Powerwalls could be configured in a "round robin" configuration, so that in a backup situation, when one Powerwall is close to being depleted it switches over to the 2nd Powerwall? If this is possible then my installation delay would be eliminated, as they're now stuck waiting for back-ordered breakers which may take months to arrive during this pandemic supply chain nightmare.