SECTION 3 INSTALLATION
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Figure 15 DC Cable Connections
DC Grounding
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To connect the DC ground
The Chassis Ground lug on the DC end of the inverter•charger is used to
connect the chassis of the inverter•charger to your system’s DC grounding
point as required by regulations for some installations. Use copper wire that is
either bare or provided with green insulation. Do not use the DC Ground Lug
for your AC grounding. (See the AC wiring instructions in this section.)
Follow the guidelines below that correspond to your type of installation.
These guidelines assume you are using the code-compliant DC supply cable
and fuse sizes indicated in this manual. If you are using different sizes, refer to
the applicable code for DC grounding details.
•
Recreational Vehicle
Use 8AWG copper wire and connect it between
the Chassis Ground lug and the vehicle’s DC grounding point (usually the
vehicle chassis or a dedicated DC ground bus).
•
Marine
Use 2AWG copper wire that is bare or has insulation rated min.
90
°
C, and connect it between the Chassis Ground lug and the boat’s DC
grounding bus or engine negative bus.
•
Residential
Use 4AWG wire and connect it between the Chassis Ground
lug and your system’s DC grounding point. This will usually be the AC
service entrance grounding point or a separate ground rod. For a solar PV
installation, this will usually be the same ground rod used to ground the
PV array.
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