SolarCity H6 - Figure 3-13: Parallel String Connections

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Chapter 1 - Welcome
The SolarCity H6 inverter does not use positive or negative grounding; however, a
floating ground that connects the chassis of each component must be included in
the installation. For example, each string or array may bring in both high-voltage lines
and a ground wire that must be connected to the grounding bus inside the wiring box,
as may the battery pack, main panel, etc. For clarity, the wiring diagrams in this manual do
not depict the grounding conductors. These grounding conductors are referred to as
Equipment Grounding Conductors, or EGCs.
Figure 3-13: Parallel string connections
The wiring box may include a Rapid Shutdown Master (Power Line Communication or PLC
Transmitter) that sends a simultaneous wireless PLC signal to the RSD boxes connecting all of
the strings in the PV array via the high-voltage DC lines connected to the PV+ and PV-
connections, as shown in Figure 3-13 .
CAUTION: THE PLC TRANSMITTER MUST BE WIRED AS SHOWN IN FIGURE
3.13. REVERSING THE POLARITY COULD CAUSE AN EQUIPMENT FAULT.