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Stu Toft Posted on Jul 03, 2018
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I have a Generac 30,000 watt propane generator. The 5.7 GMC engine and the generator both work fine, but it came without an automatic transfer switch. What ATS will work with this unit?

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john h

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  • Generac Master 29,494 Answers
  • Posted on Jul 03, 2018
john h
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1 Related Answer

Anonymous

  • 169 Answers
  • Posted on Jan 26, 2009

SOURCE: Generac Guardian 15kW Generator

That sounds just about right, if the relay contacts get welded together it sometimes takes out the driver on the printed circuit board. As you found out, 12vdc from 23 to 194 makes the transfer switch move to the Generator position, relay not energized makes the ATS move to the Normal position.

You can make a nice test function by installing a 10 amp contact switch in series with either the N1 or N2 terminals. When the switch is open the generator thinks the Normal power has failed.

Regards,
Carl

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Generac Guardian 15kW Generator

That sounds just about right, if the relay contacts get welded together it sometimes takes out the driver on the printed circuit board. As you found out, 12vdc from 23 to 194 makes the transfer switch move to the Generator position, relay not energized makes the ATS move to the Normal position.

You can make a nice test function by installing a 10 amp contact switch in series with either the N1 or N2 terminals. When the switch is open the generator thinks the Normal power has failed.

Regards,
Carl
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