Magnum Energy MS Series - Manual (Page 32)

©
2012 Magnum Energy, Inc. Page 23
Installation
2.5.5 AC Conductor Wiring (MS2012, MS2812, MS4024 models)
The following steps are basic guidelines for installing and connecting the AC wiring to and from all
MS Series inverters (except MS2000 Series model inverters – for instructions on wiring MS2000
Series model inverters, refer to Section 2.5.7). 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 no AC power is connected to the inverter.
Wiring the Inverter AC Input
1. Remove the two Phillips screws on the AC wiring access cover (Item 15, Figure 1-3) to access
the internal AC terminal block (see 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 (Item 8, Figure 1-2). 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 HOT
1 IN terminal. Tighten the HOT 1 IN terminal to 16 in lbf (1.8 N-m).
Info: You must connect to the HOT 1 IN terminal if you want to use the battery
charger.
Info: Depending on the AC wiring confi guration, you may need to connect a wire to
the HOT 2 IN terminal – refer to your confi guration drawing (Figure 2-10 to 2-13).
4. Connect the neutral (WHITE) from the main panel’s neutral busbar to the inverter’s NEUT IN
terminal. Tighten the NEUT IN terminal to 16 in lbf (1.8 N-m).
Wiring the Inverter AC Output
1. Route the wires (hot, neutral, and ground) through the unused strain relief clamp on the
inverter (Item 8, Figure 1-2) to the AC electrical sub-panel (or outlets, if using the output
breaker versions). Tighten the strain relief clamp securely on the wires.
2. Connect the hot (BLACK) wire from the inverter’s HOT 1 OUT terminal to the sub-panel‘s 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 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).
3. Connect the neutral (WHITE) from the inverter’s NEUT OUT terminal to the sub-panel’s neutral
busbar (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
1. 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
inverter’s AC GROUND terminal. Tighten the AC GROUND terminal to 16 in lbf (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 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.