2025-05-05

Close the Wiring Compartments and Turn the System On

  1. Before closing any installed hardware, take photos of the completed wiring in the Powerwall+, Backup Switch, and main distribution board.
  2. Ensure that all conduit junctions and cable entry points are secure and properly sealed.
  3. Arrange all wires neatly inside the Powerwall+ wiring compartments.
  4. Mount the solar assembly door.
  5. Clean out the solar assembly enclosure and vacuum out any dust.
  6. Install the grounding jumper:
    1. Connect the jumper to the grounding bolt on the inside of the solar enclosure door.
    2. Install the provided M5 nut with 8 mm drive on the grounding bolt and torque to 1.5 - 2.5 Nm to secure the jumper in place.
      Figure 1. Grounding Jumper Secured to Door
  7. Close the solar assembly door and latch it shut.
  8. Using a right angle Phillips head screwdriver, tighten the captive screw on the solar assembly door to secure it.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Tightening this screw is absolutely necessary to prevent untrained persons from opening the solar assembly door, which would expose them to energized conductors.
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    Note
    A luggage lock, such as a Master Lock 120 series, can be used to lock the solar assembly shut.
  9. Use a breaker label sheet to clearly label the circuit breakers.
  10. Install signage complying with local AHJ requirements at the panel and at the Rapid Shutdown initiator. Depending on the installation, the Rapid Shutdown initiator will be the Powerwall+ Enable switch AND/OR at the System Shutdown Switch. See Appendix E: Solar Assembly Rapid Shutdown for a label example and diagrams of label placement in common system configurations.
  11. Switch on the AC circuit breaker for Powerwall+.
  12. Switch on Powerwall+ by moving the Enable switch on the right side of the unit to the ON position.
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    Note
    The Powerwall+ On / Off switch has a locking mechanism. When the switch is locked it cannot be turned on.
    Warning IconA warning icon, calling your attention to a possibly risky situation
    CAUTION
    Always leave site with Powerwall+ breaker closed for battery to maintain a base level of charge. Leaving the Powerwall+ disconnected from AC for extended periods increases risk of damage.
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    Note
    Leaving the Powerwall+ system on and operating is preferred and recommended. The system will automatically be in a temporary Non-Export Self-Powered Mode while waiting for Permission to Operate (PTO). This allows the customer to immediately use their system for backup and start reaping the financial benefits of their system.
    When PTO is received from the utility, there are two methods to enable grid export: