Ac Output Neutral Bonding - Xantrex Freedom SW 3000 Installation Manual

Planning
• If the input wiring is dual-input and the output wiring is single-input,
the following rules apply: If the input breaker on L1 is greater than 25
A, the wire size must be coordinated for that amperage. If the input
breaker on L1 is less than 25 A, the wire size must be coordinated for
25 A. The wire size must not be sized for anything lower than 25 A.
• If both the input and the output wiring are dual-input, the output wiring
for each line (L1 and L2) must be calculated separately, following
these rules: If the input breaker on the specific line is greater than 25
A, the wire size for that line and its neutral must be coordinated for
that amperage. If the input breaker on the specific line is less than 25
A, the wire size for that line and its neutral must be coordinated for 25
A. The wire size must not be sized for anything lower than 25 A.
Size of Wiring Downstream of the AC Output Breaker The wiring
used between the AC output breaker and your loads must be sized to match
the output breaker.
12

AC Output Neutral Bonding

The AC source must have its neutral conductor bonded to ground.
Bonding system The Freedom SW 3000 provides a system that
automatically connects the neutral conductor of the inverter's AC output
circuit to safety ground ("bonding" it) while the inverter/charger is
inverting, and disconnects it ("unbonding" it) when the inverter/charger is
connected to external AC power. This system is designed to conform to
installation codes that require AC sources such as inverters and generators
to have their neutral conductors tied to ground at the source of power in the
same way that the neutral conductor from the utility is tied to ground. These
same codes specify that the neutral can only be connected to ground in one
place at any one time.
Suitability This automatic neutral-to-ground bonding system requires AC
input sources with bonded neutral. This will be the case in most situations:
in a utility feed, at an external AC hook-up, or a generator with a bonded
neutral. If not, have an electrician look into bonding the source's neutral to
ground. See also "AC Input and Output Isolation" on page 23.
Freedom SW 3000 Installation Guide