SolarCity H6 - Battery Pack Interface; Communications; Figure 3-17: High-Voltage Battery Pack Connections

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Chapter 1 - Welcome

3.5.2 - Battery Pack Interface

The SolarCity H6 inverter connects directly to the battery pack output via two high-voltage

lines (BATT+ and BATT-). The battery pack is an un-grounded/floating system, meaning that

there must also be a ground connection between the battery pack chassis and the inverter

(bonding bushing not required).

Figure 3-17

displays the battery pack connection to the

inverter.

Figure 3-17: High-voltage battery pack connections

3.5.3 - Communications

The SolarCity H6 inverter also includes multiple communication lines for the battery pack

and the fireman switch. Two sets of low-voltage lines enable communications between

battery pack and the inverter.

• Set 1 includes the communication wires that connect to the following Communication

connectors (16-24 AWG; colors may vary):

- 12V AUX

- 12V AUX GND

- Enable/Disable

- CAN_H

- CAN_L

Set 2 includes the 14-22AWG Fireman Switch connectors that may run either through the

same conduit as the AC grid wiring or through a separate 1/2” conduit:

• Fireman +

• Fireman –