System Configuration
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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, 60Hz, 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 page2–29).
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.