SolarCity H6 - Fireman Switch; Figure 5-6: Fireman Switch

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Chapter 1 - Welcome

5.9.6 - Fireman Switch

The Fireman Switch is typically located near the main electrical panel to allow emergency

responders to shut down all power to the PV system from the panels on. It may also be

mounted directly under the SolarCity H6 inverters through a 1/2” conduit. The switch is

located beside the main electrical panel for easy access to firefighters during an emergency

situation. Please see

“Fireman Switch and Rapid Shutdown” on page 42

The Fireman Switch is typically wired to the SolarCity H6 inverter through the conduit

carrying the AC grid connections; however it can also be wired using a dedicated 1/2”

conduit. The inverter wiring box includes the Fireman + and Fireman – terminals. By default,

the inverter contains a jumper that shorts these terminals pre-installed from the factory.

• To use the Fireman Switch: Push the red button. This holds the button close to the

housing and sends a signal to the SolarCity H6 inverter, which in turn sends a wireless PLC

signal through the PV array lines to the RSD boxes on the roof, which respond by isolating

the PV array from the rest of the system. This system also shuts off the battery pack and

all AC outputs.

• To reset the Fireman Switch: Rotate the button clockwise. You will hear a click, and the

button will pop back out, ready for normal operation.

Figure 5-6: Fireman Switch

Note: SolarCity recommends using 14-22AWG wire for the Fireman Switch

connection.

Note: Make sure that both the DC Disconnect Switch on the inverter and

the switch on the Battery Pack are in the ON position when resetting the

Fireman Switch in order to resume normal operation.