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The GFCI is an electrical safety device that quickly breaks an electrical circuit with leakage current to
ground. It is to protect equipment and to reduce the risk of serious harm from an ongoing electric shock.
This GFCI is wired in parallel with the AC terminal block and they can output a maximum of nominal
power.
For the 120/240Vac split phase models, the GFCI is installed on the Hot 1 line.
The GFCI amperage rating is 20A for all models.
The GFCI has no overload protection.
2.5.14 Automatic Neutral-to-Ground Bonding
The automatic neutral-to-ground bonding feature uses an internal relay that automatically connects the AC
neutral output to the vehicle/boat’s safety ground (“bonding” it) in Inverter Mode and disconnects it
(“un-bonding” it) when they have connected to a qualified external AC source.
The inverters with model # of APC3012NC/APC3024NC/APC3048NC are equipped with automatic
neutral-to-ground switching.
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.
Disabling the Automatic Neutral-to-Ground Connection
In some installations, this feature must be disabled.
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