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I need to change the power cord on our duet dryer from a 4 prong to a 3 prong The 3 prong does not have a neutral wire does that matter?

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  • cailino Mar 30, 2009

    My DUET paperwork is asking that I come up with a grounding wire...separate from the 3 prong cord wires.  The cord didn't come with it, neither did the dryer...is it really necessary?  If so, after connecting it to the green screw, where to I attach the other end?

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I think you need to read the following link to make sure you aren't violating any electrical codes, first:

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

Yes, a 3-prong DOES have a NEUTRAL wire. That would be the WHITE terminal. A 3-prong does not have a separate ground. The NEUTRAL is usually grounded at the appliance casing by a jumper wire.

Read in the "Additional Notes" section on how to convert from a 4-prong to 3-prong. Also note that some of the newer appliances require a 4-prong plug in order to run correctly. I have a Kenmore HE3 model dryer that is currently using a 3-prong power cord. Since this model Kenmore is manufactured by Whirlpool, and is identical to the Duet, you should be okay with a 3-prong plug.

Posted on Aug 08, 2008

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4-prong to 3-prong Power Cord Conversion.


On a 4-prong power cord you have 2 hot wires, one neutral wire, and one ground wire. On a three prong cord, you have 2 hot wires and one neutral/ground wire. The difference is the on four prong the neutral wire goes to electrical neutral bus in the breaker panel and the ground wire goes to the ground bus in the breaker panel. Since the neutral and ground buses, although separate, both go to physical ground, on a three-wire setup, you are just putting the neutral and ground wire together, Most dryers actually have a place at the pigtail connection to do just that.

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Kenmore Dryer Model #11060932990 Proper grounding when changing 4 prong cord to 3 prong.


According to the National Electric Code, you will need to install a grounding strap from the frame to neutral in a 4- to 3-wire conversion.

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1 Answer

I need to change my 3 prong to a 4 prong


Unplug the dryer then remove the terminal block cover and disconnect the 3-prong cord from the dryer. Note that the cord has red , black, and white wires but sometimes the red and black wires are both replaced by same color wire, usually gray and can switch places. There's also a ground strap wire also connected to the center terminal together with the white (neutral) wire.

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.

It can be observed that converting a 3-prong cord to 4-prong cord is merely splitting the neutral line and the ground thereby increasing the number of prongs from 3 to 4 whereas, on the other hand, converting a 4-prong cord to 3-prong cord is merely joining the neutral line (white) and the ground (green/yellow) thereby reducing the number of prongs from 4 to 3.. The links below might enlighten you further on this matter.

Four-prong to Three-prong Electric Dryer Conversion
Three-prong to Four-prong Electric Dryer Conversion

Aug 21, 2011 | Kenmore Dryers

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I have a four prong clothes dryer plug that needs to go in a three prong outlet - 220v. Any ideas?


It's either you convert the 3-prong outlet to 4-prong or the 4-prong cord to 3-prong. But the latter is easier and more feasible. Unplug the dryer then disconnect the 4-prong cord from the dryer. Note that it has red, black, white, and green/yellow wires but sometimes the red and black wires are both replaced by same color wire, usually gray. The red and black wires are lines L1 and L2 reversibly, meaning they can switch places, while the white and green/yellow wires are the neutral line and ground, respectively.

Get yourself a 3-prong cord and note that it has red , black, and white wires but sometimes, like the 4-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 these 3 wires in the same manner they are connected as 4-prong cord to the terminal block. The wire strapped to the dryer cabinet and connected to the green/yellow wire of the 4-prong cord wire is now left hanging. The last step is to connect this hanging strap wire to the same terminal on the terminal block (center) where the white wire (neutral) is connected and it's done.

It can be observed that converting a 4-prong cord to 3-prong cord is merely joining the neutral line (white) and the ground (green/yellow) thereby reducing the number of prongs from 4 to 3. On the other hand, converting a 3-prong cord to 4-prong cord is merely splitting the neutral line and the ground thereby increasing the number of prongs from 3 to 4. The link below might enlighten you further on this matter.

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Kenmore 700 dryer with a three prong cord is being converted to four prong. Is there a drawing of what wires by color going to the proper screw location?


There's a ground strap wire (green/yellow) attached to the dryer cabinet and connected to the center terminal where the white neutral wire of the power cord is connected. Disconnect this ground strap wire and remove the 3-prong power cord from the terminal block taking note where the wires are connecedt to. Connect the 4-prong power cord in the same way same wire colors of the 3-prong cord are connected to the terminal block. Connect the ground strap wire to the remaining fourth wire (green/yellow). Just do the reverse when converting 4-prong to 3-prong. The link below might enlighten you further on this matter.

Electric Dryer Prong Conversion

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1 Answer

Just moved into an older home with a 3 prong dryer receptacle. My whirlpool duet dryer model: GEW9250PL1 currently has a 4 prong cord. I have purchased the 3 prong cord and am ready to install. Very...


Hi, White, green green/white striped they are all the same....only thing you really have to worry about is that you have the red and black in the proper places...
Here is a tip that will help you with changing your dryer plug. Dryer Cord and Wiring Dryer 3 Wire or 4 Wire



heatman101

Jul 13, 2011 | Dryers

2 Answers

I need to change the dryer power cord on my Amana NDE6800AYW dryer. The current cord is a 4 prong with four wires that are black, red, green, and white. I need a 3 prong plug and I got a cord a Home...


The two wires on either side of the power cord are your HOT leads. They are the voltage carrying conductors. These two wires will connect to the terminal block on the RED and BLACK wires. The middle wire is NEUTRAL and goes to the WHITE wire at the terminal block. Now...with a 3-wire configuration you will need to connect a grounding strap to the neutral wire and ground it to the grounding lug of the appliance. The following link explains:

http://www.fixya.com/support/r793520-3_prong_4_prong_power_cord_conversion

The main difference between 3 and 4 wire configuration is how the neutral and ground wires are installed. In a four wire configuration these two are independent of each other. In a 3 wire configuration ground and neutral are connected together.

If you have any questions about this repair, please ask me. I hope this helps you.

Jul 17, 2009 | Amana NDE6800AYW Electric Dryer

1 Answer

Changing my dryer cord from 3 pronge to a 4 pronge. how do i hook the cords to the baqck of the dryer. brand name is a frigidaire


on 4 wire, red and black is hot, white is neutral and green is ground. On terminal block out side terminals are hot and center is neutral, ground connects to green screw on cabinet. if your current connection has a white or green/yellow jumper on the ground term move this to the center/neutral connection with the white wire. only wire to be on gnd term in gnd wire. hot does not matter which side as long as it doesnt touch anything else and not on center term.
Difference in 3 and 4 is a dedicated ground, on 3 wire dryer was grounded through the neutral.

May 03, 2009 | Dryers

1 Answer

Roper Dryer


Changing from 3 to 4 wire hookup on a electric dryer:
Power cord help for 3 & 4 prong dryer cords 
This is an example of a three wire connection dryer cord hookup. Notice that there is a ground strap connected from the common center terminal to the frame of the terminal block. Place the center wire of the cord on the center terminal [ one with the ground ******** it ] and the other two wires will be placed on the outer terminals and it doesn't matter which wire goes right or left. Get the center wire of the cord right and you are in business. 
This is an example of the 4 wire dryer cord hookup. Notice that the ground strap has been removed from the terminal block frame and folded back onto the center terminal for storage. You can see the colors of the other hookups. TIP: White always to the middle.

Mar 02, 2009 | Roper Dryers

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