2.0 INSTALLATION
© 2001 Xantrex Technology Inc. All Rights Reserved.
P/N 975-0013-01-01 Rev B 10/01
1 1
Series Stacking (continued)
Wiring with a Conduit Box
When wiring a stacked pair of inverters using a conduit box, a longer DC cable must be supplied to connect the
negative terminals of the inverters together. This does not come with the kit and must be obtained separately. The
following illustration shows how the inverters are wired in a conduit box. This wiring arrangement is basically the
same as the previous illustration (Figure 2-Series Stacking (continued)
Battery Connections for Stacked Inverters
When using inverters in a stacked configuration, the same battery bank must be used for both inverters. To
ensure even charging of the batteries, each inverter must be connected to both strings (i.e., positive cable to string
2, and negative cable to string 1 for inverter L1; and positive cable to string 1 and negative cable to string 2 for
inverter L2) as shown in the diagram below. 4).
NOTE: SWCBs (SW Conduit Boxes) or PSCBs (PS Conduit Boxes) may be required to meet
code when stacking inverters.
DC
Disconnects
Negative
Tie
Series Stacking
Cable (SWI)
+
–
+
–
DC Disconnect Box
SWCB (or PSCB)
Conduit Box
SWCB (or PSCB)
Conduit Box
DC Negative
Block
+
–
+
–
Batteries
+
+
-
-
Inverter 1
(L1)
Inverter 2
(L2)
DC Chassis
Earth Ground
NOTE: The Series Stacking Cable is
illustrated here to show it connects to
each inverter. Please refer to the
inverter's operator's manual for the
STACKING PORT location.
DC Chassis
Ground
Figure 2-5
DC Wiring using a DC Disconnect Box
