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When in the Pass-Through Mode / Utility Mode, the Neutral of the 120VAC shore power will be
connected to the Neutral Out connector of the Inverter Charger. At the same time, the “Neutral
to Ground Bond Switching Relay “will un-bond (disconnect) the Neutral Out connector of the
Inverter Charger from the chassis of the Inverter Charger. This will ensure that the Grounded
Conductor (GC) / Neutral of the shore power is bonded to the Earth Ground at one single point
at the location of the AC Power Distribution System of the Marina / RV Park. This design avoids
two neutral-to-ground connections from existing at the same time, thereby preventing an
electrical shock hazard between the vehicle/boat’s neutral and the external AC source’s
neutral.
The automatic transfer switch will take care of automatic neutral to ground bonding in the
following scenarios:
Feeds AC output from the Inverter Section to the AC loads when utility / shore power is not
available
The input terminals of the inverters have large capacitors connected to them. Once a
positive and negative wire are connected to the terminals, it will complete the circuit,
and commence drawing a heavy current momentarily. As a result, there may be a
sparking occurring even if the inverter is in the off position. To minimize sparking, it
is recommended that the user have the appropriate size wire feeding into the
inverters and/or install an external fuse leading into the inverter charger.
NOTE
Feeds utility / shore power to the battery charger Section when shore power / utility is
available.
This cannot be disabled.
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