Disabling The Neutral-To-Ground Connection; Figure 2-12, Disconnecting Neutral-To-Ground Connection - Magnum Energy MMS Series Owner's Manual

2.5.2 Disabling the Neutral-to-Ground Connection

The MMS1012 has an automatic neutral-to-ground switching feature.
In installations that already have the neutral bonded to ground in the
electrical panel (i.e., home/offi ce installation), this feature must be
disabled by disconnecting the neutral-to-ground connection. If you
are not sure whether you must disable this feature, check your local
code requirements. Follow the steps below to disable this connection.
Info: The ground connection from the inverter's AC and DC
grounds should still be connected to the system ground,
even if ground switching has been disabled.
WARNING: Fire and Shock Hazard—disconnect all AC and
DC sources before working in the AC wiring compartment.
1. Locate and remove the AC access cover plate (Figure 1-3, Item
8) on the side of the MMS1012 inverter.
2. Inside the AC wiring compartment, locate the green wire with
the insulated connector (Figure 2-12). This insulated connector
connects the neutral and ground inside the inverter while
inverting.
3. Pull the two ends of the insulated connector apart to separate
the green wire; this will prevent the neutral and ground from
connecting inside this inverter.
4. Move the two disconnected ends away from each other and push
back out of the way. You must ensure that the two connector
ends will not have any contact with any other wires within the
AC compartment. You may want to use electrical tape to insulate
the ends and secure them out of the way.
Neutral-
to-Ground
Connection
(green wire)

Figure 2-12, Disconnecting Neutral-to-Ground Connection

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