Xantrex Freedom XC 1800 Owner's Manual page 31

AC breakers and fuses must be sized to adequately protect the
wiring that is installed on the input and output AC circuits of the
Freedom XC. All breakers and wiring must be sized and
connected in accordance with the electrical codes or regulations
applicable to your installation. Table 4 gives some examples of
wiring sizes based on the U.S. National Electrical Code and the
Canadian Electrical Code. These examples are based on using a
two-conductor-plus-ground copper cable rated at 60 °C, and
assuming an ambient temperature of up to 30 °C. Ensure that your
breakers and fuses have suitable temperature ratings for your
wiring. Other codes and regulations may also be applicable to your
installation.
Table 4 Required AC Wire Size vs Breaker Rating
Breaker Size (A)
10A
Minimum Wire
14AWG
Size (AWG)
975-1175-01-01
15A 20A 30A
14AWG 12AWG 10AWG
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
ground bonding and Output Neutral ground bonding must be
isolated from each other.
AC Grounding
As per UL458, for all permanently connected 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 regulations,
directives, local codes and ordinances.
Basic Installation Procedures
17