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Change the power cord from 4 prong to three

Need to change the power cord from 4 prong to three prong. What do I do with extra ground wire?

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If converting from a 4-prong to a 3-prong configuration, the wires are terminated at the terminal block as follows:

RED (hot) - to RED
BLACK (hot) - to BLACK
WHITE (neutral) - to WHITE
GREEN (ground) - is terminated to neutral by using a common screw at the terminal block, or by using a ground strap from the neutral terminal to a ground on the equipment casing.

If in doubt, the following link explains the color codes:

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

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

Posted on Aug 02, 2009

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1 Answer

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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Need to change from 3 prong cord to


disconnect the green or brass ground strap from the terminal block to the body then wire the new plugs three colors the same as the old then connect the green from the plug strait to the body. on a 3 wire the dryer is grounded through the neutral, on a 4 wire the ground goes to the body.

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I need to change out my 3 prong dryer power cord with a 4 prong dryer cord, but unable to figure out where the wires go on the new 4 prong power cord, because the one on there is grey and not color coded...




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.

Below are a few websites.
http://www.applianceaid.com/general.html#3to4


http://www.american-appliance.com/catalog/newsdesk_info.php?newsPath=10&newsdesk_id=5

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Changing dryer plug


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.


949d841.jpg67160d9.jpg

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Replacing a 3 prong cord with a 4 prong cord on a Maytag Neptune Model # mde4000ayw


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.


949d841.jpg67160d9.jpg

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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.


949d841.jpg67160d9.jpg

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1 Answer

Changing dryer plugs


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.


949d841.jpg67160d9.jpg

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grasshopper_2.gifWiring in a new power cord for your electric dryer? Upgrading your electric dryer outlet from the old three-prong to the new four-prong outlet? Well, grab hold of those two large lumps at the base of your spinal cord and let's romp through the wild and wacky world of dryer cords and outlets.

tn_3cord_dryer_terminal.jpgtn_4cord_dryer_terminal.jpgThese two pictures illustrate the power wiring on a the terminal of an electric dryer. The one to the left here 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 to the right. These are just just thumbnail pictures that you can click for a larger view. But I'll bet you already figured that out, didn't you?
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.
tn_3prong_dryer_outlet.jpgtn_4prong_dryer_outlet.jpgIf you need to re-wire the outlet, these pictures will explain the anatomy of the three-prong (left) and four-prong (right) outlets. Once again, these pictures are just thumbnails--click 'em for a larger view.

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

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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.

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