Tesla Powerwall Integrated Battery Storage User Manual
- June 12, 2024
- Tesla
Table of Contents
Tesla Powerwall Integrated Battery Storage User Manual
STEP 4: MAKE SOLAR DC CONNECTIONS
Table 2. MCI Mounting Hardware Sizing
STEP 5: CONFIGURE AND WIRE THE BACKUP GATEWAY
Remove Neutral-Ground Bonding Strap from Backup Gateway if Not Installed as Service Equipment
Proper earth connection and Neutral-to-Ground bonding is required for safe operation of the Powerwall+ system and for compliance with local code requirements.
When installed as Service Equipment, the factory-installed Neutral-Ground Bonding Strap bonds neutral to ground, as shown in Figure 8. The Neutral- Ground Bonding Strap must only be removed if not installed as Service Equipment, or for test purposes.
Use a 7 /16-inch socket to remove the two nuts attaching the Neutral-Ground Bonding Strap.
If replacing the Neutral-Ground Bonding Strap, torque nuts to 65 in-lbs (7.4 Nm).
Figure 19. Neutral-Ground Bonding Strap Location
WARNING: To ensure safe operation in Backup Mode, a local earth connection must be present on the site such as by earth rod or ground electrode. Connection of earth rod must comply with local codes.
Install Main Breaker in Backup Gateway
When installed as Service Equipment, a main breaker must be installed. Eaton
CSR or BW type breakers may be used; see Eaton Breakers on page 92 for
compatible breakers.
1. Remove the Sl and S2 supply lugs using a 7 /16-inch hex socket.
2. Install the main breaker, torqueing the two Sl and S2 nuts to 65 in-lbs
(7.4 N-m) using a 7 /16-inch hex socket.
NOTE: Main breaker wire lug cover caps are recommended any time a main breaker is installed in the Backup Gateway
Figure 20. Removing the Sl and S2 Supply Lugs to Install a Main Breaker
Make AC Power Connections to Supply and Load Panels
In each of the following steps:
- Strip the ends of the wires and insert into the corresponding Backup Gateway terminal lugs.
- Using an appropriate torque tool, tighten the lugs according to the table on the following page.
- Use copper or aluminum wire only.
- Connect the supply conductors to the Backup Gateway Supply terminals according to Conductor Connections on page 49 and the accompanying table.
- Connect the home load panel conductors to the Backup Gateway Backup terminals according to Conductor Connections on page 49 and the accompanying table.
- For partial home backup with Non-Backup loads under 100 A, a Non-Backup panel can be connected.
Connect the conductors (Ll, L2, Neutral, and Ground) from the Non-Backup panel to the Backup Gateway’s Non-Backup terminals according to Conductor Connections on page 49 and the accompanying table.
Any circuits connected here will not be powered when disconnected from the grid. During on-grid operation, these circuits are still metered by the internal site metering with no additional metering hardware required.
WARNING: Always ensure all equipment is safely de-energized and locked out prior to working, to prevent risk of electric shock. To avoid shock hazard, never power on the system without a connection to Earth at the Gateway.
WARNING: Incorrect wiring of AC conductors presents a risk of electrical shock or damage to equipment. Before energizing the system, ensure all connections are made correctly according to the instructions in this document and in accordance with local wiring codes and regulations.
Refer to Appendix B: Wiring Reference on page 85 for all wiring requirements and recommendations, including wire colors and gauges.
Refer to Appendix C: System Wiring Diagrams on page 95 for example system wiring diagrams.
Table 3. Conductor Connections
Design Considerations
Refer to Appendix G: Feature Notes on page 720 for information on the Backup Gateway load shedding feature, which can be used to interrupt any 60 V circuit when operating off-grid.
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