Wiring for Dual Inverter Configurations

Wiring for Dual Inverter Configurations

Series stacked Sine Wave Plus inverters with ACCBs installed are wired essentially the same as single inverters, with the following differences.

Installing the ISC-S Cable

The ISC-S cable must be run through one of the ISC-S/ICM cable slots provided on the sides of the ACCB (see Figure 1-7 on page 1–10). The cable slots are blocked with hole plugs. These hole plugs must be removed before inserting the ISC-S cable.

Remove the hole plug for the slot to be used by the cable only. Do not remove any other hole plugs. Ensure that the all the other hole plugs are still in place as shown in Figure 1-34).

ISC-S Cable

Grommet

Hole Plug

Figure 1-34ISC-S Cable in an ISC-S/ICM Cable Slot of the ACCB

AC Neutral Wiring for Dual Configurations

All of the AC wiring for dual Sine Wave Plus inverters remains the same, except for two changes in the neutral wiring:

1.All NEUTRAL IN wiring goes only to the neutral terminals in the L1 ACCB (attached to the L1 Sine Wave Plus inverter).

2.A neutral bond between the inverters is created by connecting an owner supplied #6 AWG THHN neutral wire (white) from the ACCB neutral terminal attached to the L1 Sine Wave Plus inverter to the ACCB neutral terminal attached to the L2 Sine Wave Plus inverter.

This wire should be long enough to pass from the L2 inverter AC terminal block, through adjacent knockouts on both ACCBs, to the L1 inverter ACCB terminal block.

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