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15
Planning Preparations
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AC Output Neutral Bonding
The AC source must have its neutral conductor bonded to ground.
Bonding system
The Freedom SW 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 26.
Freedom SW 3K2K InvChg Install Guide.book Page 15 Wednesday, October 12, 2011 4:40 PM
