Basic Installation Procedures
975-0395-01-01 1–27
This guide for use by qualified installers only
14. Install the lock washer and nut that are supplied. Tighten the nut to a
torque of 108–120 in-lbf (12.2–13.6 N-m). Make the connection snug
enough so the ring terminal does not move around on the DC
terminal, but do not overtighten.
15. Slip the DC terminal covers over the Freedom HF DC terminals.
DC Grounding
To connect the DC ground:
The equipment grounding lug on the DC end of the Freedom HF is used
to connect the chassis of the Freedom HF to your system’s DC negative
connection or grounding bus point as required by electrical regulations.
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 the specific type of
installation. These guidelines assume you are using the DC supply cable
and fuse sizes recommended in this manual. If you are using different
sizes, refer to the applicable installation 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 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. For the Freedom HF 1000,
use a wire of gauge 4AWG minimum. For the Freedom HF 1800, use
a wire of gauge 1/0AWG minimum.
Figure 1-9
DC Cable Connections
FreedomHF_IC_01-Installation.fm Page 27 Monday, December 24, 2007 9:47 AM