Step 7: Connecting the DC Cables
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DC Grounding
To connect the DC ground:
The Chassis Ground lug on the DC end of the PROsine is used to connect the
chassis of the PROsine 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.
105
°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.
Figure 3-8
DC Cable Connections
