2.0 INSTALLATION
© 2001 Xantrex Technology Inc. All Rights Reserved.
P/N 975-0013-01-01 Rev B 10/01
13
Series Stacking (continued)
Series Stacking AC Wiring
Series stacking is used in applications where either 240 volt loads (or a combination of both 240 and
120 volt loads) need to be powered from the inverters. One inverter, connected to the utility’s L1 line,
provides one 120 volt AC output and a second inverter connected to the utility’s L2 line provides the
second 120 volt AC output (180 degrees out-of-phase from the first inverter). The combined out-of-phase
voltages can power 240 volt AC loads as well as 120 volt loads, up to the power rating of the inverters.
Input Wiring (SW Series) (Figure 2-7)
Utility Input
• Connect a wire from the ground bus in the main service panel to the GROUND terminal in the L1
inverter. Connect a second ground wire from the L1 inverter’s AC GROUND terminal to the GROUND
terminal in the L2 inverter.
• Connect a wire from the neutral bus in the main service panel to the NEUTRAL IN terminal in the L1
inverter. Connect a second wire to the NEUTRAL OUT terminal and route this wire to the L2 inverter’s
NEUTRAL IN terminal. Keep this wire as short as possible.
• Connect a wire from the main service panel’s hot L1 line to the L1
L1
L1
L1
L1 inverter’s AC HOT IN 1 terminal.
• Connect a wire from the main service panel’s hot L2 line to the L2
L2
L2
L2
L2 inverter’s AC HOT IN 1 terminal.
Generator Wiring
• Connect a wire from the generator’s ground terminal to the AC GROUND terminal in the L1 (or L2)
inverter.
• Connect a wire from the generator’s neutral terminal to the NEUTRAL IN 2 terminal in the L1 (or L2
Inverter).
• Connect the generator’s hot wire (120 VAC) to the AC HOT IN 2 terminal in the L1
L1
L1
L1
L1 inverter.
If a 120/240 VAC generator is used in the system its hot (L2) output must be connected to the L2
inverter as follows:
• Connect a wire from the generator‘s L2 hot terminal to the AC HOT IN 2 terminal in the L2
L2
L2
L2
L2 inverter.
