Basic Installation Procedures
975-0787-01-01
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DC Cabling
This includes all the cables and connectors between the batteries,
the DC disconnect and over-current protection device, and the
Freedom X. Most mobile installations require multi-strand
insulated cables for flexibility and durability in high vibration
environments and require disconnects and over-current devices.
Electrical wiring sizes in North America are indicated by AWG
notation. In other parts of the world, the metric system is used.
Under the AWG standard, a larger gauge number indicates a
smaller wire diameter. Wire size is usually marked on the larger
sized cables.
specifies the minimum recommended DC
cable size and maximum fuse size for the Freedom X.
The DC
cables must be copper and must be rated 75 °C minimum.
The cables should be terminated with lugs that fit the DC stud
terminals snugly (
5
/
16
" hole size).
Inverter
Cable Length:
Battery to Inverter
(one way)
Minimum
Cable
Size
Maximum
battery
Fuse Size
Freedom X
1000 120VAC
12VDC
Less than 5 feet
(1.5 meters)
No. 2 AWG
150 A DC
Freedom X
2000 120VAC
12VDC
No. 2/0
AWG
250 A DC
Freedom X
3000 120VAC
12VDC
No. 4/0
AWG
350 A DC
Freedom X
2000 120VAC
24VDC
Less than 5 feet
(1.5 meters)
No. 2 AWG
150 A DC
NOTE
:It is not recommended using a cable longer than 5 feet
(1.5 meters) in each direction. North American cable sizes above
are based on the US National Electrical Code Table 310.17 -
75 °C cables, assuming an ambient temperature of 30
°
C cables.
Table 6 Required Cable Sizes
IMPORTANT
: Using the correct cable size is critical to achieving
the rated performance of the Freedom X unit. When starting a
heavy load the Freedom X can draw current surges from the
battery of up to 400A (in 12VDC models). If the DC wiring is too