Backup Gateway 2 Wiring Diagrams

The wiring key below illustrates how the lugs in the Backup Gateway 2 are connected.

Figure 1. Backup Gateway 2 Wiring Key

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.
Informational PurposesAn informational icon, calling your attention
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.
Figure 2. Partial Home Backup with Standalone Meter
Informational PurposesAn informational icon, calling your attention
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).
Figure 3. Partial Home Backup with Meter Load Center
Informational PurposesAn informational icon, calling your attention
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.