Product Mounting Requirements

Product mounting requirements can be found in the appropriate installation manual:

Each manual includes the following useful information:

Maximum distance between components Plan Distance Between Components in Step 1: Plan the Installation Site
Minimum mounting clearances Powerwall 3 Space Requirements in Step 1: Plan the Installation Site
Mounting bracket anchoring requirements Mounting Bracket Anchoring Details in Appendix A: Powerwall 3 Mounting Details
Requirements for mounting Expansion units
  • Powerwall 3 Wall Bracket Anchoring Details for Wall-mounting or Ground-mounting on Approved Foundation in Appendix A: Powerwall 3 Mounting Details (includes stud requirements for stacked configurations)
  • Install Expansion Units with Powerwall 3 in Appendix G: Installing Multiple Powerwall 3 Units and/or Expansion Units (includes general installation guidance, including space requirements)
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Note
Powerwall 3 can only be mounted in a stacked configuration when Powerwall 3 is stacked in front of Expansion unit(s). Powerwall 3 units must be mounted side-by-side to ensure the wiring compartment remains accessible (see Appendix A: Code Requirements for commonly enforced codes).

Important Notes About Mounting Powerwall 3Expansion

For complete Expansion mounting requirements, please review Install Expansion Units with Powerwall 3 in Appendix G: Installing Multiple Powerwall 3 Units and/or Expansion Units in any of the Powerwall 3 installation manuals.

  • The correct kit must be specified depending on how the Expansion unit(s) will be installed:
    • Expansion Stacking Kit: Tesla P/N 1978070-00-A
    • Expansion Wall Mount Kit: Tesla P/N 1978069-00-A
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    Note
    See the Powerwall 3 installation manual for an overview of what is included in each kit.
  • For Expansion units mounted in a stacked configuration, confirm the minimum footprint area is available in front of where the bracket will be installed:
    (2) Units (3) Units (4) Units
    14 x 24 ¼ in (356 x 610 mm) 20 x 24 ¼ in (508 x 610 mm) 27 x 24 ¼ in (686 x 610 mm)
  • For Expansion units mounted in a side-by-side wall-mounted configuration:
    • Determine whether Expansion units will be connected on only one side of Powerwall 3, or on both sides:
      • When Expansion units will be connected on only one side of Powerwall 3, the maximum combined harness length is 4 m (13 ft). The following table provides all allowable harness combinations for this configuration:
        Harness 1 Harness 2 Harness 3
        4 m (13 ft) 1875157-40-x - -
        2 m (6.5 ft) 1875157-20-x 2 m (6.5 ft) 1875157-20-x -
        2 m (6.5 ft) 1875157-20-x 0.5 m (20 in) 1875157-05-x 0.5 m (20 in) 1875157-05-x
        0.5 m (20 in) 1875157-05-x 0.5 m (20 in) 1875157-05-x 0.5 m (20 in) 1875157-05-x
        Warning IconA warning icon, calling your attention to a possibly risky situation
        CAUTION
        Using any other harness combination will result in excessive wire length, impacting product performance.
      • When Expansion units are connected on both sides of Powerwall 3, there is no limit on the maximum combined harness length. However, there is effectively a maximum combined harness length of 8 m (26 ft)* on each side of Powerwall 3 because:
        • Only (2) Expansion units can be connected on one side of Powerwall 3 (with (1) Expansion connected on the other side for a maximum total of (3) Expansion units)
        • The longest available harness is 4 m (13 ft) long. While any combination of harnesses can be used on either side of Powerwall 3 in this configuration, using the longest available harness results in a maximum combined length of 8 m (26 ft)

        *Only (3) Expansion units can be connected to the Leader Powerwall 3. With Expansion units connected to both sides of Powerwall 3, there will always be one side with only (1) Expansion unit connected; by default, the maximum harness length on this side is 4 m (13 ft), which is the longest available harness length.

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        Note
        The Expansion harnesses plugged in to the left and right ports on Powerwall 3 can be different harness models (e.g. the 4 m (13 ft) harness on one side and the 2 m (6.5 ft) harness on the other).
    • Determine how far apart the Expansion units can be installed depending on which Harness(es) are being used:

      Expansion
      Harness Part Number

      (A)
      Maximum Distance Between Units, Accounting for Bend Radius

      Tesla P/N 1875157-05-x0.25 m (10 in)
      Tesla P/N 1875157-20-x1.75 m (5 ft 9 in)
      Tesla P/N 1875157-40-x3.75 m (12 ft 3 in)

Restricted Powerwall 3 Installation Locations

Powerwall 3 may NOT be mounted in any of the following locations:

  • Habitable spaces (defined as any location used for sleeping, lounging, cooking, eating, etc.)
  • Interior hallways
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Note
See Residential Code for ESS and When to Escalate on Partner Portal for more information on how various codes apply to installing Powerwall systems, including Powerwall 3 installation location.