Question about Briggs & Stratton 15,000 Watt Home Standby Generator

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15KW liquid cooled died when 240V.applied to terminal strip

I am a master electrician, helping a friend, hooking up a used generator. We are using this in manual mode.When LP gas was hooked up I simply swithed it on and it ran fine. I had also ran a 12-3 romex to unit for battery & block heater. I mistakenly wired this to a double terminal strip(I believe is item#52),on right side of control box. After I killed unit, I traced (2) small blue wires to DPDT switch(item 19 p.n.76020).I know now that this must have been a remote switch. Besides replacing auto/manual switch, what else did I possibly damage?. We tried jumping solenoid, for a second, and it cranked motor. I stopped before I caused more problems. 30 amp fuse was fine. Are there any other fuses? We had a major ice storm in NH, and I have been hooking up mostly portable units all week.(Gentran switches).I was mortified to kill this genrator & hope for a quick solution. Jean L. Landry/ J.L.Electric

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  • jllandry Dec 20, 2008

    I know I put 240v. to this switch. Will replacing switch slove problem? This specific to a Generac/Guardian LP gas 15KW standby generator.

  • jllandry Dec 20, 2008

    It is a Generac Guardian 15KW LP gas standby generator. I only need it in manual mode. The unit is used, so I don' t know exactly what year it is but it looks new, and I believe the control box is the same for most all the lp gas models in this power range (10KW - 25KW)

  • jllandry Dec 20, 2008

    Can I use a DPDT switch purchased from Radio Shack? I did look at the ratings for this switch.The toggle works as such, on/off/on. Is this an industry standard for such a switch? The ratings on side of switch were (15 A 125V. or 10A @250V.)I just don't want any more surprises!

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Hi
I would replace the switch with the radioshack equivalent. If it served as a part to the remote ignition on off circuit. Check for any volts to the wiring on the switch. I expect that it is a switch to 0v , you should have some voltage on one of the wires. If you have feed a battery voltage up to it, then there may have been some further damage in the ignition circuit. Change it out and see what happens. I give you good luck and it will work out for you :)
regards robotek

Posted on Dec 20, 2008

  • Graeme Ross
    Graeme Ross Dec 20, 2008

    Just as ToyotaEd has already pointed out. :) 

  • Graeme Ross
    Graeme Ross Dec 20, 2008

    You could get some decent information from here

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Yes u can go for radioshack switches . thanks.

Posted on Dec 20, 2008

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What is the exact model name of the generator.?

Posted on Dec 20, 2008

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The DPDT is most likely the switch that allows the transfer switch to activate the generator. You also pulled power where you should not have.

Posted on Dec 20, 2008

  • Toyota Ed Dec 20, 2008

    Replacing the switch should fix the issue.

    The center contact is cooked. I would NOT bypass the switch to verify operation.

  • Toyota Ed Dec 20, 2008

    The Radio Shack switch should be sufficient. The ratings are acceptable. Inatall it and please get back to me, works or not.

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