Ac Wiring For A Dual-Inverter System - Xantrex XW4024-120/240-60 Installation Manual

AC Wiring for a Dual-Inverter System

Power Distribution bars in the XW
Power Distribution Panel accept up to
a #2/0 AWG cable (maximum).
See Figure 2-9 on page 2–11 for
torque requirements.
Figure 2-28 Dual Inverter AC Breaker Arrangement and Wiring Enlargement with Multiple AC Input Sources
975-0239-01-01
1. Disconnect the AC wires (from the utility grid or generator and to the sub-panel) and
remove the factory-installed distribution bars connected to top and bottom terminals
on the AC breakers.
2. Remove bypass interlock bracket.
3. Disconnect INV1 AC LOAD (INV1 L1-LOAD, INV1 L2-LOAD) wires from top
terminals on right-hand side breaker.
4. Add three additional dual-pole AC breakers (supplied in 865-1020) next to the
existing three dual-pole AC breakers.
5. Attach the four, four-tab distribution bars (supplied in 865-1020) to top and bottom of
AC breakers as shown in dual-inverter system wiring diagrams.
6. If a backup generator or other secondary AC source is installed in the system, reuse
two of the dual-tab power distribution bars previously installed on INV1 Grid/Bypass
breakers for generator breakers as shown Figure 2-28.
7. Connect grid wiring and loads/subpanel wiring to the new distribution bars as shown
in Figure 2-29.
8. Connect INV1 LOAD (INV1 L1-LOAD, INV1 L2-LOAD), INV2 LOAD (INV2
L1-LOAD, INV2 L2-LOAD), and INV2 GRID (INV2 L1-GRID, INV2 L2-GRID)
wires to AC breakers as shown in Figure 2-29.
9. Connect neutral (INV2 N-LOAD (SPLIT-PHASE)) and ground (INV2 GROUND)
wiring as shown in dual-inverter system wiring diagrams.
10. Connect wiring at the inverter/chargers as shown in Figure 2-29.
11. Remove the knockouts on upper wire cover for additional breakers to fit through.
12. Re-install upper wire cover. Relabel the AC breakers with the appropriate labels
provided with the XW Power Distribution Panel.
13. Install bypass interlock plate with provided screws and nylon shoulder washers
(supplied in 865-1020).
This manual for use by qualified personnel only
Step 5: Installing Additional Inverters
2–33