20/06/2023 15:25:24

Connect Powerwall+ to the Backup Switch

  1. Hardwired communications enter the Backup Switch via the conduit hub. Run either LFNC or TCER cable using an appropriate ½-inch NPT fitting. Installer preference, Utility, and/or AHJ requirements will dictate whether LFNC or TCER cable should be used.
  2. Run the 4-conductor communication cable through the conduit or cable gland and pull it through the Backup Switch conduit hub.
  3. Wire the 4-conductor communication cable to the Backup Switch connector:
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Always wire the Backup Switch connector before plugging it in to the Backup Switch. The force exerted to lock each terminal can potentially damage the Backup Switch, so wires must be placed and terminals locked before plugging the connector into the Backup Switch.
    1. Strip the communication wire jacket about 3 inches. There is no need to strip the individual communication wire, as the connector is insulation displacing.
    2. Cut back the drain wire. The drain wire should be terminated at the Powerwall+ solar assembly ground terminal only.
    3. Insert a cabinet tip or electronics tip slotted screwdriver (up to 3 mm or 3/32 inch) to open each connector lever.
    4. Insert each conductor as far as possible into the terminal and then use the screwdriver to close the connector lever.
    Informational PurposesAn informational icon, calling your attention
    Note
    Reference Backup Switch Wiring for the correct wire order in the Backup Switch connector.
  4. Plug the connector into the corresponding connector socket on the bottom of the Backup Switch.
  5. Adjust wire slack, or coil the wires as necessary.
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    Note
    Leave approximately 5 inches of slack in the wiring.
  6. Secure the conduit hub:
    1. Mount the conduit hub over the communication cable connector.
    2. Install and tighten the (3X) T20 Torx screws to 1.5 Nm (hand-tight) to hold the hub in place.
    3. Route the 4-conductor communication cable from the Backup Switch to Powerwall+.
      Informational PurposesAn informational icon, calling your attention
      Note
      Provide attachment points to secure cable/LFNC to wall as defined by NEC.
  7. Wire the 4-conductor communication cable to the Powerwall+ solar assembly:
    1. Strip the communication wire jacket about 3 inches and strip each conductor 0.4 inches (10 mm).
    2. Insert a cabinet tip or electronics tip slotted screwdriver (up to 3 mm or 3/32 inch) into each actuation shaft to open the terminal.
    3. Insert each conductor as far as possible into the terminal and remove the screwdriver from the actuation shaft to close the terminal.
      Informational PurposesAn informational icon, calling your attention
      Note
      Reference Backup Switch Wiring for the correct wire order in the Backup Switch connector.
    4. (Optional) If the drain wire is present, insert it in the solar assembly ground terminal.
    Informational PurposesAn informational icon, calling your attention
    Note
    See Plan Distance Between Components for the maximum distance between components.