Appendix J: Revision Log


Revision	Date	Description
1.18	March 20, 2025	Added minimum room size to Choose a Location that Meets Powerwall 3 Clearance Requirements
1.17	March 14, 2025	Added Electrical Equipment Sizing and Overcurrent Protection for multi-Powerwall systems Updated Install Stacked Expansion Units to reflect that the shims should be installed on the bracket before mounting the bracket to the rear Expansion unit
1.16	January 24, 2025	Added Test PV Strings with MCIs Updated STEP 11: Turn On and Commission the System with reminder to install MCIs and connect / test PV strings before turning Powerwall 3 ON Updated Powerwall 3 Wall Bracket Anchoring Details for Wall-mounting or Ground-mounting on Approved Foundation to reflect that the bracket fasteners should be installed on the outside edges of the bracket slots for greater stability when anchoring to concrete, brick, or channel strut Updated Install Expansion Units with Powerwall 3 with guidance for painting the Expansion Harness Updated Wall Mount an Expansion Unit with strapping guidance when using the 0.5 Expansion Harness in a wall-mounted configuration
1.15	November 21, 2024	Updated Powerwall 3 Specifications and Install MPPT Jumpers (Optional) to reflect updated Powerwall 3 I_MP of 15 A and I_SC of 19 A Updated Install Mid-Circuit Interrupters in PV Array with "Always 4" rule option for number of required MCI-2s Updated Channel Strut section and made general update to attach fasteners on outer edge of bracket slots in Powerwall 3 Wall Bracket Anchoring Details for Wall-mounting or Ground-mounting on Approved Foundation Added Powerwall 3 Wall Bracket Anchoring Details for Stacked Configurations Updated Concrete Pad Details for Ground-mounting Powerwall 3 on Pre-Cast Concrete Pad an Existing Structural Wall to reflect pre-cast concrete pad
1.14	October 24, 2024	Updated Powerwall 3 Specifications, Required Supplies, and STEP 5: Make Powerwall 3 AC Circuit Connections to reflect that Powerwall 3 can be configured to have an off-grid maximum continuous discharge power of 15.4 kW if installed with an 80A breaker and appropriately sized conductors Updated Mid Circuit Interrupter Specifications (P/N MCI-2) PV Rapid Shutdown Equipment (PVRSE) to include MCI-2 High Current current ratings
1.13	October 9, 2024	Updated Install Mid-Circuit Interrupters in PV Array to clarify that MCI(s) must be installed on any PV system connected to Powerwall 3
1.12	September 25, 2024	Updated Install Mid-Circuit Interrupters in PV Array to clarify that MCI(s) must be installed on any PV system connected to Powerwall 3 Corrected maximum combined harness length when Expansion units are connected on both sides of Leader Powerwall 3 in Wall Mount an Expansion Unit Corrected allowable wire range for Ground terminals (metric only, corrected 2.5 mm² to 4 mm²) in Powerwall 3 AC and PV Wiring
1.11	September 17, 2024	Updated STEP 9: Install Energy Metering for the System to reflect availability of Tesla Remote Energy Meter Added Powerwall 3 Center of Mass and updated Powerwall 3 Wall Bracket Anchoring Details for Wall-mounting or Ground-mounting on Approved Foundation with additional details on wall bracket anchoring requirements depending on mounting configuration Updated Install Expansion Units with Powerwall 3 to reflect stacked mounting configuration option and added specific stacking instructions in Install Stacked Expansion Units
1.10	September 4, 2024	Added Powerwall 3 Expansion Specifications and Install Stacked Expansion Units
1.9	August 13, 2024	Updated Mechanical Specifications to reflect that the Powerwall 3 height is 43.5 in (1105 mm) when the glass front cover is installed Updated In the Powerwall 3 Accessory Bag and STEP 7: Install Clamp-on Ferrite Cores / Metal PV Shield to reflect that only (2) ferrite cores are required for Powerwall 3 units with Tesla P/N 1707000-11-L or 1707000-21-L Updated Close Wiring Compartments to reflect that front cover fasteners can be reused Updated General Anchoring Notes to reflect that Powerwall 3 cannot be mounted to a chimney
1.8	July 24, 2024	Updated Powerwall 3 Specifications to reflect Powerwall 3 power / current output can be limited; added guidance for locating the part number and serial number on a Powerwall 3 unit Updated Mid Circuit Interrupter Specifications (P/N MCI-1) PV Rapid Shutdown Equipment (PVRSE), Mid Circuit Interrupter Specifications (P/N MCI-2) PV Rapid Shutdown Equipment (PVRSE), and Install Mid-Circuit Interrupters in PV Array with link to UL 3741 Application Addendum for complete list of systems that have been certified to UL 3741 when installed together with Powerwall 3 and Tesla MCI Updated In the Powerwall 3 Accessory Bag and Powerwall 3 Service Parts, Orderable Parts, and Accessories to reflect that Powerwall 3 units with part number 1707000-11-L or 1707000-21-L ship with a different set of MPPT jumpers than all other Powerwall 3 units Updated Required Supplies to reflect that Powerwall 3 units with part number 1707000-11-L or 1707000-21-L can be installed with metallic or non-metallic conduit Updated Make PV Power Connections and Install MPPT Jumpers (Optional) with new PV wiring diagrams and instructions for Powerwall 3 units with part number 1707000-11-L or 1707000-21-L Updated STEP 5: Make Powerwall 3 AC Circuit Connections with instructions to choose Powerwall 3 breaker size based on configured power output, as well as to mark configured power output on the Powerwall 3 product label
1.7	July 1, 2024	Updated Maximum Output Fault Current and added Maximum Short-Circuit Current Rating in Powerwall 3 Specifications Added Maximum Disconnect Voltage to Mid Circuit Interrupter Specifications (P/N MCI-1) PV Rapid Shutdown Equipment (PVRSE) and Mid Circuit Interrupter Specifications (P/N MCI-2) PV Rapid Shutdown Equipment (PVRSE) Updated Required Supplies to reflect that minimum NEMA 4 (IPX5) fittings are only required when installing Powerwall 3 outdoors Updated Install Mid-Circuit Interrupters in PV Array with warning that where it is allowable to install only (1) MCI per string, MCI-1 must be used Updated STEP 5: Make Powerwall 3 AC Circuit Connections to reflect Fast Acting fuse requirements if using a 60A fuse rather than a circuit breaker for Powerwall 3 overcurrent protection
1.6	May 29, 2024	Updated Powerwall 3 Specifications and STEP 5: Make Powerwall 3 AC Circuit Connections to reflect fuse requirements if using a 60A fuse rather than a circuit breaker for Powerwall 3 overcurrent protection
1.5	April 29, 2024	Updated Install Mid-Circuit Interrupters in PV Array to include guidance for Ecofasten systems Corrected Appendix H: Shutting Down Powerwall 3 to reflect that the Powerwall 3 Enable switch initiates Rapid Shutdown per NEC 690.12
1.4	April 18, 2024	Updated Overcurrent Protection Device and PV DC MPPT Voltage Range in Powerwall 3 Specifications Updated STEP 9: Install Energy Metering for the System to reflect that Powerwall 3 can be installed with standalone (AC-coupled) solar inverters when Backup Gateway 2 is installed (required for Solar metering) Updated Install Mid-Circuit Interrupters in PV Array to include guidance for IronRidge systems
1.3	March 17, 2024	Updated Ingress Ratings in Powerwall 3 Specifications Updated Mid Circuit Interrupter Specifications (P/N MCI-1) PV Rapid Shutdown Equipment (PVRSE) to reflect an updated Nominal Input DC Current (I_MP) of 13 A Updated Install Mid-Circuit Interrupters in PV Array to include maximum DC circuit length for paralleled strings Updated Install Mid-Circuit Interrupters in PV Array to include guidance for UL 3741 listed IronRidge systems Updated Connecting Powerwall 3 Units via Ethernet to reflect that the system can be connected to the customer's router via Ethernet
1.2	February 8, 2024	Updated Plan Powerwall 3 Mounting Configuration and Appendix A: Powerwall 3 Anchoring Details to reflect that Powerwall 3 must be mounted using the mounting bracket Updated Install Mid-Circuit Interrupters in PV Array to include guidance for Solar Roof V3R systems Updated STEP 9: Install Energy Metering for the System to clarify that Backup Gateway Internal Auxiliary Meter (Meter Y) can only be used to meter Site in Powerwall 3 systems (it cannot meter Solar at this time)
1.1	January 15, 2024	Updated Plan Cable Length Between Components to reflect that maximum communication cable length depends on wire gauge Added step to remove PV connector cover in Make PV Power Connections Updated Tesla Asset Controller (TACO) LEDs Updated STEP 11: Turn On and Commission the System to reflect additional scenarios
1.0	November 17, 2023	Initial publication