Backup Gateway 2 Wiring Diagrams
The wiring key below illustrates how the lugs in the Backup Gateway 2 are connected.
![](GUID-BED61812-473B-4B6D-8F33-78B0AAE74087-online-en-US.png)
Powerwall 3 with Backup Gateway 2 (Whole Home Backup)
- All loads and generation are downstream of the Backup Gateway 2 contactor.
- Site-level metering by integrated Site CTs.
- Solar metering by Powerwall 3
- Internal panelboard kit may be used for Generation breakers.
- Neutral-Ground Bonding Strap installed only if Gateway is main service equipment.
![](GUID-4CD3D642-AF46-4C98-AC16-DE554A99D670-online-en-US.png)
Note
In this example, Powerwall 3 can be landed at the Backup
Gateway 2 internal panelboard as shown above, or at an external generation panel as
shown in Powerwall 3 with Backup Gateway 2 (Partial Home Backup).
Powerwall 3 with Backup Gateway 2 (Partial Home Backup)
- If Non-backup loads connected to Non-Backup Lugs, site-level metering by integrated Site CTs.
- If Non-backup loads are upstream of Gateway, site-level metering by integrated Site CTs plus additional 100 A CTs on L1/L2 of non-backup circuit, or by remote meters at point of interconnection.
- The internal panelboard kit may be used for Generation breakers or Non-Backup loads.
- Neutral-Ground Bonding Strap installed only if Gateway is main service equipment.
![](GUID-E72D5BE8-730F-438D-B06A-A7C77B22992D-online-en-US.png)
Note
In this example, Powerwall 3 can be landed at an external
generation panel as shown above, or at the Backup Gateway 2 internal panelboard as
shown in Powerwall 3 with Backup Gateway 2 (Whole Home Backup).
![](GUID-0DF45C3C-B7AA-44D6-8DFC-D7DE8A7C7E99-online-en-US.png)
Note
In this example, the upstream loads may only be metered by the Internal Auxiliary
Meter if they are less than 100 A. Otherwise, a Remote Energy Meter and CTs must be
used.