H6 Hybrid Inverter - Installation & Operation Guide
64
Copyright 2017 SolarCity Corporation. All rights reserved.
5.6.1 - Limitations
The following requirements may apply when selecting the wire size and type:
• For all DC copper wire connections, use size 8-12AWG that is rated for +194°F (+90°C).
• Do not coil the PV wires.
• Use conductors rated for at least 600V.
5.6.2 - Wiring
To connect the PV array wires to the SolarCity H6 inverter:
1. Connect one 3/4” conduit to the SolarCity H6 inverter for each MPPT channel (up to two
channels supported) using watertight conduit fittings, as described in
“Conduit Plugs and
Fittings” on page 61
.
2. Pull the wiring from the PV array through the conduit to the inverter, leaving at least 6”
(152mm) of exposed wire to ensure adequate strain relief. The wiring must comply with
the requirements listed in
“PV Array” on page 37
.
3. Use the procedure described in
“Using the Spring Clamp Connectors” on page 62
to
connect the PV array wires from the first string to the PV1A+ and PV1A- connectors in the
SolarCity H6 inverter as described in
“PV Interface” on page 28
and
“PV Array” on
page 37
. When making the connections:
- Connect the positive wire to the correct positive connector first.
- Connect the negative wire to the correct negative connectors next.
4. Repeat Step 3 for the PV1B, PV2A, and PV2B connection(s), as appropriate for the
installation. The following combinations are supported, subject to the limitations
specified in
“PV Array” on page 37
:
- PV1A and PV2A
- PV1A, PV1B, and PV2A
CAUTION: DC INPUT VOLTAGE THAT EXCEEDS THE MAXIMUM INVERTER
RATING OF 570 VDC WILL VOID THE INVERTER WARRANTY.
CAUTION: BE SURE THAT THE POLARITY IS CORRECT WHEN YOU MAKE THE
CONNECTION. REVERSING THE POLARITY MAY DAMAGE THE INVERTER.
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