Install Multiple Powerwall 3 Units

Leader to Follower Communication Ethernet (see Prepare Ethernet Wiring with RJ45 Connectors)
Internet Connection for Multiple Units Option 1: The Leader Powerwall 3 is connected to customer router over Wi-Fi
Option 2: Either the first or last Powerwall 3 (can be Leader or Follower) in the chain is connected to customer router via Ethernet
Informational PurposesAn informational icon, calling your attention
Note
Only connect the router to a Powerwall 3 at either end of the chain; do not connect it in the middle of the chain (see Connecting Powerwall 3 Units via Ethernet for example diagrams).
Maximum Wire Length Between Units See Plan Cable Length Between Components
Overcurrent Protection Devices Each Powerwall 3 requires its own circuit breaker
Splitting PV Production Between Multiple Powerwall 3 Units Splitting PV production (strings) equally between the Powerwall 3 units is preferred but not required

Connecting Powerwall 3 Units via Ethernet

All Powerwall 3 units other than the Leader unit must be connected via inter-Powerwall Ethernet wiring and are designated as Follower units. The units can be connected in any order, so long as each unit is connected to at least one other unit.

Figure 1. Option 1: Leader Powerwall 3 Connected to Customer Router via Wi-Fi (Leader at Start of Chain)
Figure 2. Option 2: Leader Powerwall 3 Connected to Customer Router via Wi-Fi (Leader in Middle of Chain)
Figure 3. Option 3: Leader Powerwall 3 Connected to Customer Router via Ethernet
Informational PurposesAn informational icon, calling your attention
Note
If connecting the system to the customer router via Ethernet, connect the router to either the first or last Powerwall 3 in the chain. Do NOT connect the router in the middle of the chain.

Commissioning Multi-Powerwall 3 Systems

For instructions to commission a multi-Powerwall 3 system, see the Powerwall 3 Device Setup Guide.