H6 Hybrid Inverter - Installation & Operation Guide
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Copyright 2017 SolarCity Corporation. All rights reserved.
- Connect red L2 wire to the “L2” connector.
4. Insert the grounding conductor into the grounding bus and torque the fastening screw to
21 foot-pounds (28Nm).
5.8.2 - Utility Back-Feed (OCPD) Circuit Breaker
A dedicated back-feed circuit breaker must be installed in the main electrical panel for each
SolarCity H6 inverter in the installation. Each L1 and L2 AC line must have a circuit breaker or
disconnect in order to isolate the AC grid connection when needed. The circuit breaker must
be rated for the maximum output voltage and current of the inverter. The recommended AC
branch protection for the SolarCity H6 inverter is 2-pole, 35A 120/240Vac.
5.8.3 - Output to Backup Load Center
To connect the AC backup load center wiring to the SolarCityH6 inverter:
1. Pull the wires from the backup electrical panel through the conduit to the SolarCity H6
inverter, leaving at least 6” (152mm) of exposed wire to ensure adequate strain relief. The
wiring must comply with the requirements listed in
“Main Electrical Panel” on page 41
.
2. Use the procedure described in
“Using the Spring Clamp Connectors” on page 62
to
connect the AC output wires to the BL1, BL2, and BN connectors as described in
“Backup/Protected Loads Panel” on page 32
and
“Back-up Electrical Panel” on page 39
.
3. Insert the grounding conductor into the grounding bus.
Note: The SolarCity H6 inverter does not bond the neutral connections to
ground. The inverter checks for grid power by measuring the voltage
difference between the L1 and N connectors and between the L1 and L2
connectors. A loose neutral connection is interpreted as loss of grid
power, and the inverter will stop feeding power to the AC grid.
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