MS Series Owner's Manual - Magnum Energy

Installation
2.5.5 AC Conductor Wiring
The following steps are basic guidelines for installing and connecting the AC wiring into and out of
the inverter, refer to table 2-3 to determine your AC wiring configurations before beginning.
WARNING: Before making any AC connections, make sure the inverter is disconnected
from the battery and all AC power is disconnected from the inverter.
Wiring the Inverter AC Input
1. Remove the two Phillips screws on the AC wiring access cover (item 15 in figure 1-3) to access
the internal AC terminal block (see figure 2-10).
2. Route the cable from the AC electrical main panel through one of the strain reliefs clamps to
the AC INPUT. Tighten the strain relief clamp securely on the cable. Always leave a little extra
slack in the wiring.
3. Connect the hot wire (BLACK) from the main panel’s dedicated breaker to the “HOT 1 IN”
terminal. Tighten the “HOT 1 IN” terminal to 16 in lbf (1.8 N-m).
Info: Depending on the AC wiring configuration, you may need to connect a wire to
the “HOT 2 IN” terminal, refer to your configuration drawing (Figure 2-11 to 2-15).
4. Connect the neutral (WHITE) from the main panel’s neutral bus bar to the “NEUT IN” terminal.
Tighten the “NEUT IN” terminal to 16 in lbf (1.8 N-m).
Wiring the Inverter AC Output
1. Route the cable from the inverter’s AC OUTPUT to the AC electrical sub-panel (or outlets, if
using the output breaker versions) through the strain reliefs clamps. Tighten the strain relief
clamp securely on the cable.
2. Connect the hot (BLACK) wire from the “HOT 1 OUT” terminal to the sub-panel main breaker
(or to the hot connections on the outlets, if using the output breaker versions). Tighten the
“HOT 1 OUT” terminal to 16 in lbf (1.8 N-m).
Info: Depending on the AC wiring configuration, you may need to connect a wire to
the “HOT 2 OUT” terminal, refer to your configuration drawing (Figure 2-11 to 2-15).
4. Connect the neutral (WHITE) from the “NEUT OUT” terminal to the sub-panel’s neutral bus bar
(or to the neutral connection on the outlets, if using the output breaker versions). Tighten the
“NEUT OUT” terminal to 16 in lbf (1.8 N-m).
Wiring the Inverter AC Ground
5. Combine the ground (GREEN) wire from the main panel’s ground bus bar and the ground
(GREEN) wire from the sub panel’s ground bus bar (or the ground connection on the outlets,
if using the output breaker versions). After these grounds are combined, connect them to the
“AC GROUND” terminal. Tighten the “AC GROUND” terminal to 16 in lbf (1.8 N-m).
AC Wiring Inspection
1. Verify all cables runs are secured. If installed in a mobile installation - use wire ties or other
non-conductive fasteners to prevent chafing or damage from movement and vibration.
2. Verify strain reliefs or grommets are in place to prevent damage to the wiring or conduit where
it passes through walls/bulkheads or other openings.
3. After verifying all AC connections are correct and all inverter AC terminal screws are torqued to
16 in lbf (1.8 N-m), replace the AC wiring access cover and the covers on the main electrical/
distribution panel.
© 2009 Magnum Energy Inc.
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