Installation Manual: 22.8kWh

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Generator AC Wiring

Generators wired to the Sol-Ark Split-Phase systems must be rated at 240VAC. Generators wired to the Sol-

Ark Three-Phase systems must be rated at 208VAC. Installations outside North America that incorporate

generators rated at 230VAC / 50Hz can be wired to the Sol-Ark, provided there is no Neutral wiring

connection.

Generators can either be wired to the Sol-Ark’s Generator Input Port or to the Sol-Ark’s Bi-directional Grid

Port.

In grid-connected systems, generators cannot be wired to the Grid Port. However, the Sol-Ark’s Generator

Input Port may need to be utilized for purposes other than the generator’s connection. AC Coupled systems or

systems utilizing the Sol-Ark’s Smart Load functionality are wired to the Sol-Ark’s Generator Input Port. In such

scenarios, a whole-home generator transfer switch is necessary to incorporate a generator into the system:

Figure 15.0 - Generator Wiring in Grid-Connected AC Coupled Systems

It is also acceptable, but not required, to use a whole-home generator transfer switch when the Generator

Input Port does not need to be utilized for an AC Coupled solar PV array or Smart Loads. This setup is typical

for larger (10-30 kW) generators.

In off-grid systems, Sol-Ark recommends that the Grid Port be used for generator connections.

CAUTION: Adhere to the programming instructions in the “Generators” sub-section of Section 5.3

(Configuring the Sol-Ark) in this Manual when incorporating a generator into the system.

Inverter Charger Grounding

The Sol-Ark includes a ground busbar (outlined in Figure 14.0). A wiring connection must be made between the

Sol-Ark’s ground busbar and earth ground using appropriately sized equipment grounding conductors. The Sol-

Ark’s ground busbar accepts wire sizes up to 4 AWG. System grounding must be done according to all

applicable NEC and local installation codes.

240VAC or

208VAC

REV20210319