Outback Power Systems GFX Series Inverter/Charger Installation Manual - Manual (Page 27)

Installation
900-0113-01-00 Rev A
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A “three-wire-start” generator has two or more starting circuits. It usually has a separate switch or
position for cranking the generator. The AUX terminals cannot control this type of generator without
using a three-wire to two-wire conversion kit.
Atkinson Electronics (http://atkinsonelectronics.com) makes these kits, among other companies.
The Atkinson GSCM-Mini is designed to work with OutBack inverters and others.
The drawing below is one example of a possible arrangement. Specific arrangements, relays, and
other elements depend on the requirements of the installation and of the generator.
Figure 17 Three-Wire Generator Start (Example)
Three-Wire-Start
Generator
Atkinson
GSCM-Mini