© 2010 Magnum Energy, Inc.
2.0 Installation
24
AC Output Wiring
CAUTION:
The inverter’s AC output must never be con-
nected to an AC power source. This will cause severe
damage to the inverter and is not covered under war-
ranty.
Info:
When using the MMS Series inverter in an RV ap-
plication, under certain conditions and provided that the
wire is properly sized for the protecting breaker; RVIA
wiring standards will permit the breaker in the Main dis-
tribution panel and/or the supplemental breakers on the
inverter to provide adequate protection for the AC output
wiring. For more information on these requirements, refer
to the RVIA (www.rvia.org).
Follow the steps below to hardwire the AC output of the MMS Series
inverter:
1. Remove the 1/2” knockout on the AC Output Connection (see Figure
3, Item 9) – use a utility knife to cut thru the round slot.
2. Discard this knockout and install a 1/2” strain relief in the AC OUT
opening. You may need to
fi
le the opening edge for proper
fi
t.
3. Run a 2-conductor plus ground cable through the strain relief in
the AC OUT opening. Refer to Table 4 for the minimum wire size and
the overcurrent protection required for the AC output wiring.
4. Remove about two inches of the insulating jacket from the AC
cable, and then separate the three wires and strip about 3/4” of
insulation from each wire.
5. Using approved AC wire connectors, connect the outgoing Hot
Out, Neutral Out, and AC Ground wires to the inverter’s AC wires
colored red (HOT OUT), white with black stripe (NEU OUT), and
green (AC GROUND) respectively. Gently pull on the wires to ensure
they are securely held together, and check to see that no bare wire
is exposed.
6. After making the AC output connections, secure the AC output
cable by tightening the strain relief.
7. Connect the outgoing AC wires to either:
a. an AC load sub-panel equipped with overcurrent protection
(e.g., circuit breakers), or
b. directly to the circuit, when following RVIA requirements that
permit using breakers from the main distribution panel or the
breakers on the inverter under certain conditions.
The AC output wiring in the inverter should be complete. Before
reattaching the AC access cover, review all AC wiring to ensure all
connections are correct and secure.
