Magnum Energy MP Extension Box (MPX Series) - Manual (Page 47)

3.0 Installation
© 2011 Magnum Energy, Inc. 43
3.2.4 Wiring the MPXD-30D
The following steps are basic guidelines for installing and connecting the AC, DC, and communica-
tion wiring for the MPXD-30D.
WARNING: To prevent electrical shock, make sure all AC power (inverter, generator, or
utility) is off before making any AC connections inside the MP enclosure.
MPXD-30D AC Wiring
This section provides information on the AC wiring to/from the MS-PAE Series inverters, and to/
from the main and sub-panels.
Inverter AC Input Wiring (see Figures 3-22a.1 and 3-22a.2)
1. Route and attach a black wire from the top right terminal of the new AC input breakers (left MP
enclosure) to each inverter’s AC HOT 1 IN terminal.
2. Route and attach a red wire from the top left terminal of the new AC input breakers to each
inverter’s AC HOT 2 IN terminal.
3. Route and attach a green wire from the left MP enclosure’s GROUND busbar to each inverter’s
AC GROUND terminal.
Inverter AC Output Wiring (see Figures 3-22a.1 and 3-22a.2)
1. Route and attach a black w/white stripe wire to each inverter’s AC HOT 1 OUT terminal from the
left MP enclosure’s INV HOT 1 OUT busbar.
2. Route and attach a red w/white stripe wire to each inverter’s AC HOT 2 OUT terminal from the
left MP enclosure’s INV HOT 2 OUT busbar.
3. Route and attach a white wire from the left MP enclosure’s AC NEUTRAL busbar to each inverter’s
AC NEUTRAL terminal.
Bottom AC Breaker Wiring (see Figure 3-22b)
1. Route and attach a black wire to the left MP enclosure’s AC LEG 1 IN busbar from the bottom
right terminal of each of the new AC input breakers.
2. Route and attach a red wire to the left MP enclosure’s AC LEG 2 IN busbar from the bottom of
each of the new AC input breakers.
External AC Main Panel Wiring (see Figure 3-22b)
1. Route and attach a black wire to the left MP enclosure’s AC LEG 1 IN busbar from the main AC
electrical panel.
2. Route and attach a red wire to the left MP enclosure’s AC LEG 2 IN busbar from the main AC
electrical panel.
3. Route and attach a green wire to the left MP enclosure’s GROUND busbar from the main AC
electrical panel’s Ground busbar.
4. Route and attach a white wire to the left MP enclosure’s AC NEUTRAL busbar from the main AC
electrical panel’s Neutral busbar.
External AC Sub-Panel Wiring (see Figure 3-22b)
1. Route and attach a black wire from the left MP enclosure’s AC LEG 1 OUT busbar to the AC
electrical sub-panel.
2. Route and attach a red wire from the left MP enclosure’s AC LEG 2 OUT busbar to the AC
electrical sub-panel.
3. Route and attach a green wire from the left MP enclosure’s GROUND busbar to the AC electrical
sub-panel’s Ground busbar.
4. Route and attach a white wire from the left MP enclosure’s AC NEUTRAL busbar to the AC
electrical sub-panel’s Neutral busbar.
AC Wiring Inspection
After verifying all AC connections are correct and all AC terminal screws are torqued correctly,
replace the covers on the main electrical panel/sub-panel.