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System Configuration
2–38 976-0043-01-02
Dual-Inverter Configurations
If 240 Vac power is required and the wattage required exceeds the wattage
output of a single inverter, it may be necessary to add a second inverter.
Two inverters can be “series” stacked to provide both 120 Vac and 240
Vac, 60 Hz, power to the AC loads.
Series stacking is an excellent choice for providing power to multi-wire
branch circuits where single (120 Vac) inverters may require extensive
rewiring within the building.
See Appendix F, “Multi-wire Branch Circuit Wiring” for information on
identifying and correcting multi-wire branch circuit wiring.
See Figure 2-20 for an illustration of a 240 Vac Generator-Only System
using dual inverters
240 Vac-only Input Source
Note:
Series-stacking inverters require the use of the ISC-S cable. This
interface cable is connected to the series stacking port of the inverters (see
“Inverter Stacking Control – Series (ISC-S) Cable” on page 2–29).
Important:
When using a 240 Vac-only input source (with a L1 and L2
connection but no neutral) with a dual-inverter configuration, a neutral
connection needs to be provided from the 240 Vac source to the inverter’s
common neutral.