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15
Basic Installation Procedures
This
section for use by
qualified per
sonnel
only.
AC Output Neutral Bonding
The neutral conductor of the Freedom XC’s AC output circuit (that
is, AC Output Neutral) is automatically connected to the safety
ground during inverter operation. When AC utility power is present
this connection is not present, so that the utility neutral (that is, AC
Input Neutral) is only connected to utility ground at your source.
This conforms to the National Electrical Code (NEC), which
requires that separately derived AC sources (such as inverters and
generators) have their neutral conductors tied to ground in the same
way that the neutral conductor from the utility is tied to ground in
only one place. Check the regulations for your specific application
to ensure that the installation will comply with the necessary
requirements. In other words, the AC Input Neutral and Output
Neutral must be isolated from each other.
AC Grounding
As per UL458 SA29.5, for all permanently connected marine
inverters: The Freedom XC should be connected to a grounded,
metal, permanent wiring system. Also, make sure that an AC
ground wire is connected to the AC ground terminal on the unit. Do
not just connect the line and neutral wires.
All connections to the unit should comply with all local codes and
ordinances.
DC Cabling
This includes all the cables and connectors between the batteries,
the DC disconnect and over-current protection device, and the
Freedom XC. 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 XC.
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:
Battery to Inverter
(one way)
Minimum
Cable Size
Maximum
battery Fuse
Size
Freedom XC 1000 120VAC Less than 5 feet
(1.5 meters)
No. 2 AWG
150 A DC
Freedom XC 2000 120VAC Less than 5 feet
(1.5 meters)
No. 2/0 AWG
250 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.
Freedom XC Series INV-CHG Owners Guide.book Page 15 Wednesday, June 7, 2017 3:13 PM
Summary of Contents for 817-1050
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