Disconnecting Means

When designing a system that must have a “Disconnecting Means” as defined by Article 100 of the National Electrical Code, there are two available methods for disconnecting Powerwall 3 from connected circuits: the Enable switch with locking cover on the side of Powerwall 3, and a certified Emergency Stop button field-wired to Powerwall 3 via a low voltage (12V DC) power circuit. Both methods, when initiated, de-energize AC and DC conductors associated with the PV and energy storage systems and can be locked in the off position with a standard padlock or similar Lock-Out/Tag-Out device. See the Disconnecting Means for Tesla Powerwall 2, Powerwall+, and Powerwall 3 AHJ letter on Partner Portal for more information on how each of these methods qualifies as a “Disconnecting Means”.

For more information on installing an Emergency Stop button with Powerwall 3, see the appropriate installation manual:

Note

The Powerwall 3 AC breaker serves as a secondary disconnecting means.

Note

When using Eaton branch breakers on continuous loads such as Powerwall, Eaton strongly recommends using only type BR breakers that end in H (for instance BR260H).