Ac Conductor Wiring - Magnum Energy ME3112-U Owner's Manual

2.5.5

AC Conductor Wiring

The following steps are basic guidelines for installing and connecting the AC wiring to and from all ME
Series inverters. Before proceeding, refer to Table 2-3 to determine your AC wiring confi gurations.
WARNING: Before making any AC connections, make sure the inverter is disconnected
from the battery and there is no other source of live power connected to the inverter.
Wiring the Inverter AC Input
1. Remove the two Phillips screws on the AC access cover (Figure 1-3, Item 15) to access the
internal AC terminal block (Figure 2-8).
2. Route the wires (hot, neutral, and ground) from the AC electrical main panel through one of
the strain relief clamps on the inverter (Figure 1-2, Item 8). Tighten the strain relief clamp
securely on the wires. Always leave a little extra slack in the wiring.
3. Connect the hot wire (BLACK) from the main panel's dedicated breaker to the inverter's AC
HOT 1 IN terminal. Tighten the AC HOT 1 IN terminal to 16 lbf-in (1.8 N-m).
Info: You must connect to the HOT 1 IN terminal to use the battery charger.
Info: Depending on the AC wiring confi guration, you may need to connect a wire to the
inverter's AC HOT 2 IN terminal—refer to your particular confi guration drawing (Figures
2-10 to 2-13).
4. Connect the neutral (WHITE) from the main panel's neutral busbar to the inverter's AC NEUT
IN terminal. Tighten the AC NEUT IN terminal to 16 lbf-in (1.8 N-m).
Wiring the Inverter AC Output
5. Route the wires (hot, neutral, and ground) through the unused strain relief clamp on the
inverter (Figure 1-2, Item 8) to the AC electrical sub-panel (or outlets, if using the output
breaker versions). Tighten the strain relief clamp securely on the wires.
6. Connect the hot (BLACK) wire from the inverter's AC 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 AC HOT 1 OUT terminal to 16 lbf-in (1.8 N-m).
Info: Depending on the AC wiring confi guration, you may need to connect a wire to the
HOT 2 OUT terminal, refer to your confi guration drawing (Figure 2-10 to 2-13).
7. Connect the neutral (WHITE) from the NEUT OUT terminal to the sub-panel's neutral busbar
(or to the hot connections on the outlets, if using the output breaker versions). Tighten the
NEUT OUT terminal to 16 lbf-in (1.8 N-m).
Wiring the Inverter AC Ground
8. Combine the ground (GREEN) wire from the main panel's ground busbar and the ground
(GREEN) wire from the sub-panel's ground busbar (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 lbf-in (1.8 N-m).
AC Wiring Inspection
1. Verify all wire runs are secured. If installed in a mobile installation, use wire ties or other non-
conductive fasteners to prevent chafi ng or damage from movement and vibration.
2. Verify strain reliefs or grommets are in place to prevent damage to the wiring 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 lbf-in (1.8 N-m), replace the AC wiring access cover and the covers on the main electrical/
distribution panel.
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Installation
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