Conext XW+ 230V Installation Guide

Wiring the Conext XW+ Inverter/Charger without a PDP
975-0714-01-01 3–21
This manual is for use by qualified personnel only
AC System Bonding
System bonding refers to connection (bonding) of one of the current-carrying
conductors of an electrical system to ground. This creates a "grounded
conductor" or "neutral" that is at ground potential, but is separate from the
equipment ground conductor. System bonding must be done at only one
location.
Procedures for system bonding vary between on-grid and off-grid
systems.
System bonding for
on-grid systems
The Conext XW+ does not connect the neutral to ground. The AC input neutral is
already bonded to ground by the incoming utility grid system. Do not connect the
neutral to ground in any additional location.
The Conext XW+ does not switch or disconnect the AC neutral in any mode of
operation, so even in invert (back-up) mode, the inverter load sub-panel neutral
is bonded to ground by the utility grid system. It must not be grounded again in
the inverter load sub-panel.
System bonding for
off-grid systems
In a system without a generator, or with a generator that does not provide a
grounded neutral, you must make the connection from neutral to ground in the
inverter load sub-panel or main distribution panel, as applicable.
In a system with a generator that provides a grounded neutral, no additional
connection from neutral to ground is needed. Do not connect neutral to ground in
the inverter load sub-panel or main distribution panel, as applicable.
WARNING
MULTIPLE AC NEUTRAL-TO-GROUND BONDS
Verify that only one neutral-to-ground bond exists in the system. Having more
than one neutral-to-ground bond in a system violates local electrical codes,
may create a shock or fire hazard, and may cause some sensitive equipment
to malfunction.
Failure to follow these instructions can result in death or serious injury.