Question about Generac 100 Amp 120/240-Volt Transfer Switch #RTSN100A3

3 Answers

Generac control wires

The cable that came with the generac has 4 control wires in it. The connection block in the generator and the transfer switch has 6, am I missing something or do 2 wires not have to be connected?

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  • aarlank
    aarlank Mar 13, 2012

    the other two are probably for the battery charger circuit

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Older model Generac only haver 4 control wires:
N1
N2
23
194
if it is the included wiring harness the wires should have their numbers stamped on the jacketing and a sticker should designate the proper screw to mount it to in both the ATS and the generator housing. hooking these wires up incorrectly often results in blown fuses and/or damage to the control board in the generator.

Posted on Dec 01, 2009

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Just 4. I install generac switches and generators

Posted on Jul 09, 2009

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The 4 wire you have in the cable are utility sense and the start circuit. the two extra terminals that you are talking about are likely the battery charge circuit

Posted on Mar 13, 2012

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