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I am changing from a three prong to a four. Does the green ground replace the white external or do I put the two together

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Great explanation already posted, check this link. Kudos to the Techs.
http://www.fixya.com/support/t4645254-change_3_wire_4_wire_dryer

Posted on Sep 27, 2010

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1 Answer

How do you change 3 prong to 4 prong cord?


On a three-prong cord there is a black, a red, and a white wire. The black and red are hot and the white is neutral (return). Return on the dryer is also in these cases the ground which is shunted to the netal case of the dryer. On a four prong, you have black, red, white, and green wires. The black, red, and white are the same as before, but the green is a direct connection to the dryer case for ground. This ensures proper grounding and was first introduced in to mobile home installations, where the electrical system may not always be properly grounded.

Jul 16, 2015 | Whirlpool Dryers

1 Answer

How do I change a 4 prong to a 3 prong dryer code


When replacing a 4 prong cord with a 3 prong cord you put black and red wires to the outside posts of your terminal block. The white wire from your three prong dryer cord goes to the center of your terminal block. The yellow and green wire from the dryer go together and attach to the cabinet ground.

Nov 22, 2014 | Dryers

1 Answer

I have a maytag neptune dryer #MDE5500AYW and I am trying to convert from a three prong to a four prong connection. the four prong has a red, white, black and green connection. the old three prong, had a...


yes,hook up the black with the black the white with the white and the red where the blue was,now the green is just a ground wire,all you have to do is connect it anywhere to the metal frame of the machine just to ground it,look around there should be a screw somewhere near the other wire connections if not remove any screw and connect it and it will be fine.

Sep 04, 2011 | Dryers

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

2 Answers

I have a new 4 prong plug to replace a old 3 prong on dryer


On a three wire configuration, the ground and the negative are tied together at the center position, using the dryer ground strap. Following is a description of the difference between three and four wire. Hope it helps you.
These two pictures illustrate the power wiring on a the terminal of an electric dryer. The one on top/left is the old-style three-wire configuration. Most people have this type in their homes. New code changes, though, require that dryers now have a four-wire cord, shown on the bottom/right.
Besides the number of wires in each cord, there are two important things to notice. First, in the four-wire configuration, notice that the dryer's grounding strap is folded back on itself. The whole point of the four-wire cord is to separate the ground from the neutral. The green wire (the "new" extra wire in the four-wire cord) is attached to the dryer cabinet. In the three-wire configuration, the grounding strap is left intact and the neutral and ground are tied together.


Sure hope this helps you find a resolution to your delimma! Best wishes.


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Sep 15, 2009 | Westinghouse WWS833ES Super Capacity Top...

1 Answer

I'm trying to replace the power cord on the Maytag Atlantis MDE7400AY. originally it has a three prong cord but i need to put on a four prong. in the back of the dryer it seems to only have three...


These two pictures illustrate the power wiring on a the terminal of an electric dryer. The one on top is the old-style three-wire configuration. Most people have this type in their homes. New code changes, though, require that dryers now have a four-wire cord, shown on the bottom.
Besides the number of wires in each cord, there are two important things to notice. First, in the four-wire configuration, notice that the dryer's grounding strap is folded back on itself. The whole point of the four-wire cord is to separate the ground from the neutral. The green wire (the "new" extra wire in the four-wire cord) is attached to the dryer cabinet. In the three-wire configuration, the grounding strap is left intact and the neutral and ground are tied together.


Sure hope this helps you find a resolution to your delimma! Best wishes.


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Sep 04, 2009 | Dryers

2 Answers

I need to switch my three prong power chord to a four prong


your terminal block on the dryer will have three screws in a row and there will be a green screw on the outer skin next to the terminal block cover - your four-wire cord will have a white wire, red, black and green wires - white wire goes on the center screw of the terminal block, red wire goes on one of the other screws of the terminal block, it doesn't matter which, black wire goes on remaining terminal block screw, green wire goes to the green screw

Aug 17, 2009 | Dryers

1 Answer

I had to change from a three prong to a four prong outlet. The green wire wont reach the gound bolt on the back of the dryer. I currently have it set on top of the white wire but there is also a copper...


You need to remove the grounding strap between the GROUND (Green) and NEUTRAL (White) wire if it still attached. A four prong configuration has a ground independent of the neutral wire. If the ground wire is too short to reach the terminal block, I suggest you install a longer wire of the same gauge, find an alternate location that you ground the wire to the case, or pig tail the exisiting ground to accomodate. The following link explains the 4-prong configuration:

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

Nearly all modern appliances require a 4 prong power cord now. If you have any questions about this repair, please let me know. I hope this helps you.

Jul 09, 2009 | GE DCVH515GF Gas Dryer

2 Answers

I have a 3-prong plug on a 14-year-old dryer. Now must change to 4-plug. Is that possible ... and if so, how?


A three Prong contains L1 (Line1), L2 (Line2) and N (Neutral). A four prong will contain L1 (Line1), L2 (Line2), N (Neutral) and G (Ground) typically a green wire.
Connect the three wires as normal, connect the green wire to the screw provided on the cabinet.

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Jul 04, 2008 | Dryers

1 Answer

Bought used dryer. Plugs don't match. Can cord be switched?


Yes, these cords can easily be switched. When you remove the three prong cord from the terminal block in the rear of the unit, you will wire the four prong in the same way. Black and red go to the outside terminals, white to the middle terminal, and the green wire goes to the cabinet or ground screw on the outside (usually, there is a greenish looking bolt around the terminal block door area for this to go). The only difference in a 3 and 4 prong configuration is the extra ground (green) wire. Good luck and let me know if you need further information.

Feb 01, 2008 | Maytag Performa PAV3200

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