In stacked Powerwall+ and Powerwall 2 AC systems, communication wiring is daisy-chained between Powerwall+ and Powerwall units. Power wiring is direct (home run) from each Powerwall+ or Powerwall to a dedicated circuit breaker in the electrical panel. Wiring between Powerwall+ and additional Powerwalls can be concealed, or run externally.

Concealed Wiring

For concealed wiring, a hole is drilled from the front of Powerwall+ into its wiring compartment and wires are run directly into it from the back port of the Powerwall. To use this wiring method, proceed to Step 3, “Prepare for Concealed Wiring.”

External Wiring

For external wiring, wires are run through conduit or raceway that spans the wiring compartment ports on the side of each Powerwall+ or Powerwall. To use this wiring method, skip to Step 4, “Join the Units.”