GM Energy V2H Bundle Installation Manual 20
Dark Start Battery Details
The Dark Start Battery should be covered/protected from direct sunlight, rain, or snow when installed outdoors.
Typically, any roof overhang is adequate. The dark start has a single 3/4″ threaded connection for a cord grip, or raceway
fitting. For outdoor installations, conduit fittings must be watertight and rated NEMA 4, 4X, 6, or 6X. Fit the appropriate
connector into the threaded connection.
You must mount the dark start close enough to the Inverter so that its attached cable can route and reach into the lower
right wiring chamber of the Inverter. Position the dark start so that the integrated cable is exiting from the bottom of the
dark start (Figure 10). If and only if the dark start is installed indoors, you may mount the dark start such that the cable
exits the left or right side, but never the top.
Figure 10: Dark start mounting
A NTP 3/4” threaded hole is provided at the cable outlet. Install an NTP 3/4” conduit fitting or cable gland at the wire
egress of unit, torque it to 90–300 in-lb (10–39 N-m), and then route the cable into conduit or secure the factory cable to
the mounting surface and route into the Inverter with an additional cable gland. If mounting outdoors, conduit fittings
must be watertight and be NEMA 4 or higher. Ensure that the wire bend radius for the exiting cable exceeds 2 1/2″ (64
mm).
Rapid Shutdown Device
Installation of the Rapid Shutdown Device (RSD) or Emergency Shutdown Device (ESD) is highly recommended and may
be required based on local code or ordinance. Switch must be normally closed, be outdoor rated, be Listed for 12 VDC,
and must clearly indicate its ON and OFF positions. The RSD control circuit must be wired into the Inverter. See Appendix
C for example switch. It is recommended this switch be located near the home electric meter and be clearly labeled.
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