STEP 6: Make Powerwall 3 AC Circuit Connections

  1. Before terminating any conductors inside Powerwall 3, turn the Powerwall 3 switch OFF to shut the system down, then turn the integrated DC isolator OFF.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Before proceeding, confirm both switches are OFF and there is a lack of voltage at the AC and PV terminals.
  2. (Conduit installations only) Run conduit as needed and attach the conduit fitting to the Powerwall 3 AC wiring knockout.
  3. Run the AC Line, Neutral, and the Protective Earth conductors through the conduit or cable gland. Route the conductors to the appropriate terminals, creating a service loop with the extra wiring.
  4. Clear out any debris that may be present in the AC wiring terminals.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Metal debris like loose wires or metal shavings could create a high voltage risk when Powerwall is turned on.
  5. Connect the Protective Earth:
    1. Strip the conductor insulation up to 19 mm.
    2. Insert the grounding conductor in an equipment grounding terminal and tighten the screw in the Earth terminal to 4 Nm.
      Informational PurposesAn informational icon, calling your attention
      Note
      It is best practice to connect the ground circuit before making any AC circuit connections.
  6. For each AC conductor:
    1. Strip the conductor insulation up to 11 mm. Add a wire ferrule if the conductor is finely stranded.
    2. Insert the conductor as far as possible into the terminal.
      Figure 1. Insert Conductor in Terminal
      Warning IconA warning icon, calling your attention to a possibly risky situation
      Warning
      Ensure the conductors are inserted into the round terminals and not the rectangular slots. Inserting the conductors anywhere other than the round terminals will result in poor wire termination.
    3. Perform a pull test to ensure the conductor is fully seated in the terminal. Push the conductor back in after the pull test.
      Figure 2. Powerwall 3 AC Wiring
      Warning IconA warning icon, calling your attention to a possibly risky situation
      CAUTION
      Any wire routing must be done through the wire management tabs at the top of the enclosure. Do not route loose wires through the front of the enclosure or over the Tesla Asset Controller.
    4. After installing the conductors, gather them and secure them with the provided cable tie as shown above.
    Informational PurposesAn informational icon, calling your attention
    Note
    If a conductor must be removed from the connector, insert a cabinet or electronics tip slotted screwdriver (up to 4.5 mm) into the actuation shaft to open the terminal. Pull the conductor free, then remove the screwdriver.
    Figure 3. Spring Terminal with Screwdriver and Insert Conductor in Terminal
  7. On the Powerwall 3 product label on the left side of the unit, use a paint pen, permanent marker, or similar to mark the configured power / current output.
  8. On the left side of Powerwall 3, above the product label, install the appropriate model number label depending on the configured power / current output. In the following example, the Powerwall 3 has been configured with a power output of 5 kVA.