Required Supplies

  • Powerwall 3 Mounting bracket hardware (see Appendix A: Powerwall 3 Anchoring Details)
  • Backup Gateway 2 mounting hardware
  • Minimum 10 AWG, 600 V rated, UV resistant, 90°C rated, copper (Cu) wire
    • PV and AC wiring conductors must be made of solid wire, stranded wire or fine stranded wire. Forked wire terminals are recommended (required for fine stranded wire)
    • AC conductor cross-section intake range: 10 AWG to 4 AWG (6 mm² to 25 mm²)
    • PV conductor cross-section intake range: 10 AWG to 6 AWG (6 mm² to 16 mm²)
  • Minimum 600 V rated communication cable with the following specifications (for communication connection between Powerwall and the Backup Gateway 2):
    • 16 AWG or 18 AWG (according to wiring distance limits defined in Plan Cable Length Between Components)
    • 4-conductor cable (two twisted pairs)
    • Class 1 Circuit Listed
    • Outdoor-rated
    • Overall shield with drain
  • RJ45 connectors for Ethernet wiring
  • Conduit for Powerwall 3 AC and PV circuits:
    • Powerwall 3 units with Tesla part number 1707000-11-L or 1707000-21-L: Metallic or non-metallic conduit
    • All other Powerwall 3 units: Metallic conduit required
  • Minimum NEMA 4 (IPX5) or higher conduit hubs. Tesla recommends one of the following options which meet this requirement:
    • ¾ inch PVC-MC cable connector
    • 1 inch PVC-MC cable connector
    • ¾ inch Bridgeport 252-RTI2 connector
    • 1 inch Bridgeport 252-RTI2 connector
    • ¾ inch Rigid metal conduit (RMC) Myers hub with RMC conduit
    • 1 inch Rigid metal conduit (RMC) Myers hub with RMC conduit
    • ¾ inch RMC sealing locknut with RMC conduit
    • 1 inch RMC sealing locknut with RMC conduit
    • 1-¼ inch RMC sealing locknut with RMC conduit
    Informational PurposesAn informational icon, calling your attention
    Note
    Minimum NEMA 4 (IPX5) fittings are required when installing outdoors. When Powerwall 3 is installed indoors and there is no risk of water ingress, indoor-rated fittings can be used.
  • ¾ inch, 1 inch, and 1-¼ inch conduit sealing washers
  • Breaker for the Powerwall 3 circuit: Select the appropriate breaker size depending on the desired power / current output.
    Power / Current Output (AC) Breaker (Overcurrent Protection)

    11.5 kW / 48 A On-grid
    15.4 kW / 64 A Off-grid

    		 80 A
    11.5 kW / 48A (default) 60 A
    10 kW / 41.67 A 60 A
    7.68 kW / 32 A 40 A
    5.8 kW / 24 A 30 A