Magnum Energy MM612 Inverter - Manual (Page 23)

©
2010 Magnum Energy, Inc.
Table 3, Wire Color to AC Wire Connection
Wire color (label) Wire connection
Black (HOT IN) Hot In
White (NEUT IN) Neutral In
Red (HOT OUT) Hot Out
White with black
stripe (NEUT OUT)
Neutral Out
AC Ground Green (GROUND) AC IN and AC OUT Ground
AC IN
AC OUT
Neutral to Safety Ground Bonding
Electrical safety standards for wiring mobile (RV, boat, or truck)
installations require the AC source (inverter, shore power, or a generator)
to have the neutral conductor tied to ground. These standards also
require that the AC neutral be connected to safety ground in only one
place at any time (often called a “bond”). If more than one bond is
established, currents can circulate between neutral and ground and cause
ground-loop currents. These “ground-loops” can trip GFCIs and cause an
electric shock hazard.
In mobile installations there may be multiple AC sources, which means
there is the potential of having multiple neutral to ground connections.
Therefore, you must ensure that the inverter does not also connect
neutral-to-ground while the other AC source is powering the inverter
loads. While inverting, the MM inverters use an internal relay that
automatically connects the AC neutral output terminal to the vehicle/
boat’s ground. However, when an external AC source is connected,
another neutral-to-ground connection is introduced in the system. When
the MM Series is connected to this external AC source, the internal relay
automatically opens the neutral-to-ground connection. This design keeps
two neutral-to-ground connections from occurring at the same time.
AC Wiring Connections
For all hardwired inverter models, the AC input and output wiring is per-
formed in the AC wiring compartment. This compartment is located on
the top panel (see Figure 2, Item 8). If installed, remove the two Phillips
screws on the cover to access the AC wiring compartment and locate the
inverter’s AC wiring. There is a label located in the AC access compart-
ment with information on which wires are used for the AC input and out-
put. You can also refer to Table 3 to match the inverter’s AC wires to the
appropriate AC wire connection.
AC Wiring
This section describes the required AC wire size and the overcurrent
protection needed. It also provides information on how to make the AC
connections.
17
2.0 Installation