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I am trying tochange my

I am trying to change my 3 prong dryer cord to a four prong. the dryer is a kenmore model # 86980100.

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  • mverysmart Feb 29, 2008

    i need to know how to connect the wires on the terminal block i had a 3 prong cord but because of the plug at my new house I had to change to a 4 prong cord. somebody heeeeelp

  • mverysmart Mar 04, 2008

    im new and i clicked fix ya not low scores

  • mverysmart Mar 05, 2008

    Ok i broke the wall on the terminal block. the piece between the red and white cord. But I made sure to seperate them before plugging them in and it worked, but when i went to unplug the dryer to put the door back on it popped and fizzled and now it wont work I believe the ground wire and the screw that holds on the terminal block touched. What in the hell do I do now or am I just screwed

  • mverysmart Mar 06, 2008

    thats n6t a d40b q4est56n and yes 5 d5d f5x t4rn the brea2er b6x 6ff and 6n and 5t st533 5snt w6r25ng

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This is common issue. Due to some building codes the 3-prong configuration is no longer used in homes. The wiring is similar with one exception. The 4-wire plug uses an additional (WHITE) NEUTRAL wire.

Here's a brief explanation of how the plugs are configured:

Dryer 3 prong wire configuration:

RED - 120 VAC
GREEN - GROUND
BLACK - 120 VAC

Dryer 4 prong wire configuration:

RED - 120 VAC
GREEN - GROUND
BLACK - 120 VAC
WHITE - NEUTRAL

BOTH plugs provide the SAME source voltages to your appliance:

220 VAC - provided across the RED and BLACK leads are what drives your heating circuitry.
120 VAC - usually tapped of the BLACK wire is used to run the drive motor and timer on MOST dryers.

The wire terminal block in the back of the dryer should have a black, white, and red wire running to it from the dryer wiring harness. With the 4 prong plug, simply attach the BLACK, WHITE and RED wires at the terminal block ensuring that you match the RED and BLACK wires as they are configured and attach the WHITE wire at the remaining terminal lug. Make sure you screw them all down securely. Attach the remaining GREEN wire to chassis (dryer frame) ground. I hope this helps you.

Posted on Feb 29, 2008

  • 2 more comments 
  • Jeff Rockwell
    Jeff Rockwell Mar 03, 2008

    Thanks for Trying? You couldn't figure out how to convert your dryer plug with the instructions I gave you? I've worked on appliances for a living and have had to convert many dryers for this very reason. It would be nice to get feedback about the advice given, so that I can possibly give you better guidance instead of leaving low rating marks with no reason given.

  • Jeff Rockwell
    Jeff Rockwell Mar 04, 2008

    I appreciate the feedback. I was just wondering if there was something more that I needed to assist you with. Sometimes instructions aren't clear and those that may not understand, choose to disregard the advice rather than asking questions. I was just hoping this wasn't the case. I hope I can be of assistance again if you need it.

  • Jeff Rockwell
    Jeff Rockwell Mar 06, 2008

    This may be a dumb question, but have you checked the circuit breaker that feeds the outlet? Normally, when you accidentally ground something in the manner you described, the circuit will be the first thing to trip.

  • Jeff Rockwell
    Jeff Rockwell Mar 07, 2008

    Something went wrong in the translation with your last response, because half the characters appear as numbers. I pretty much figured out your response, though. If you've double checked the circuit breaker and the wiring is intact, AND installed correctly, you may have blown the thermal fuse. It is a small white plastic device mounted on the BLOWER FAN HOUSING. There will be two wires connected to it. This fuse acts as a circuit breaker, but cannot be reset if it trips. It has to be replaced. You need to unplug the dryer, locate the thermal fuse and disconnect the wires leading to it. Take a continuity reading across the leads. It should read 0 ohms if good. You can see a picture of it at repairclinic.com. Just type in your model number in the search menu and look at item #2986. I hope this is the source of your problem.

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Did you replace just the plug end of the existing cord or the entire cord/plug cable at the dryer connection? You cannot just replace the plug end since the 4th connection is not made it won't work. The easiest solutiuon is to use a 3 to 4 prong adapter. See this video that explains it.

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Get yourself a 4-prong cord and note that it has red, black, white, and green/yellow wires but sometimes, like the 3-pronged one, the red and black wires are both replaced by same color wire, usually gray and can also switch places. All you have to do now is connect the 3 wires in the same manner they are connected as 3-prong cord to the terminal block. The ground strap wire now just need to be connected to the remaining 4th wire, the green/yellow wire instead of the center terminal together with the white (neutral) wire. Reinstall the terminal block cover and it's done.

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