10 Freedom Xi Installation Guide
Basic Installation Procedures
DC Cabling
This includes all the cables and connectors between the batteries,
the DC disconnect and over-current protection device, and the
Freedom Xi. 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. Table 2 specifies the minimum recommended DC cable size
and maximum fuse size for the Freedom Xi. 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).
Table 2 Recommended Cable and Fuse Sizes
Inverter
Cable Length:
B
attery to Inverter
(one way)
Minimum
Cable Size
Maximum
battery Fuse
Size
Freedom Xi 1000 120VAC Less than 5 feet
(1.5 meters)
No. 2 AWG 150 Adc
Freedom Xi 2000 120VAC No. 2/0 AWG 250 Adc
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.
Using the correct cable size is critical to achieving the rated
performance of the Freedom Xi unit. When starting a heavy load the
Freedom Xi can draw current surges from the battery of up to 400A. If the
DC wiring is too small the voltage drop from this surge will result in a
voltage at the Freedom Xi terminals that is too low for the Freedom Xi to
operate correctly. The Freedom Xi may appear to operate correctly with
smaller cables until a heavy load such as a microwave or refrigerator
attempts to start - then the unit may work correctly sometimes and not work
correctly other times.
Important:
Freedom XI Install Guide.book Page 10 Friday, September 18, 2015 2:48 PM
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