Configuring Powerwall(s) on Three-Phase Installations

  • When installing multiple Powerwalls, they must be distributed evenly across the three phases. Installation must meet local generation imbalance rules.
  • During the commissioning process, the Backup Phase will be selected (L1, L2, or L3). During an outage, the system will provide backup power only to loads on this phase, and Powerwalls on other phases will not operate. Ensure that all critical loads in the Home Load Panel are connected on the desired Backup Phase.
  • To ensure Powerwall charges from solar production, the single-phase PV circuit(s) must be installed on the same phase as Powerwall(s).
Warning IconA warning icon, calling your attention to a possibly risky situation
Warning
Installing 3-phase PV inverters or 3-phase equipment on the Backup side may result in equipment damage during off-grid operation. 3-phase PV inverters and 3-phase equipment should always be installed on the Non-Backup side of the Backup Gateway. The only exceptions to this rule are the Tesla Wall Connector or sockets feeding Tesla Mobile Connectors (please see the Vehicle Charging During Power Outage page for more information). The Powerwall system's backup phase should be connected to L1 of the Wall Connector or Mobile Connector socket.