Step 5: Configuring The Output Neutral Bonding System; Ac Output Neutral-To-Ground Bonding System - Xantrex PROSINE 2.0 User Manual

Step 5: Configuring the Output Neutral Bonding System

AC Output Neutral-to-Ground Bonding System

The PROsine 2.0 Inverter•Charger provides an installer-defeatable system that
automatically connects the neutral conductor of the inverter AC output circuit
to safety ground ("bonding" it) during inverter operation, and disconnects it
("un-bonding" it) when the inverter•charger has connected to AC shorepower.
This system is designed to conform to installation codes that require single-
phase AC sources such as inverters and generators to have their neutral
conductors tied to ground 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. Any AC source feeding the PROsine is required to
have its neutral already connected to ground. Therefore, to keep from
connecting the neutral to ground in a second place, the PROsine transfer relay
breaks its own neutral ground connection when connected to shorepower.
This automatic neutral-to-ground bonding system is suited for installations in
which the AC shorepower source is known to have a bonded neutral. This will
be the case in most situations: in a utility feed after the AC source panel, at an
RV park hook-up, at a marina's shorepower hook-up, or with a generator with
a bonded neutral.
In some installations, however, the AC shorepower source will not have a
bonded neutral. This is true on some generators and it is true in certain utility-
feed situations. To accommodate these situations, the PROsine automatic
neutral bonding system can be defeated, so the PROsine will not bond the
neutral in any mode of operation. This allows the installer to bond the neutral
in the AC load panel to provide the required single-point bonding of the
neutral.
➢ ➢ ➢ ➢ To enable and disable the automatic AC output neutral-to-ground
bonding system
You enable and disable the system using a screw in the AC wiring
compartment, identified as the "Invert Mode Output Neutral-to-Ground
Bonding Screw". (See
indicates two different holes that the screw can be mounted in. One hole is
445-0089-01-01
WARNING: Fire and Shock Hazard
AC neutral bonding system settings should only be changed by a
qualified installer aware of the implications of the changes. Disconnect
all AC and DC sources before working in the AC wiring compartment
or before making a setting change.
Figure 10.) This screw is identified with a label that
S 3 I
ECTION NSTALLATION
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