The National Electrical Code currently requires 4-prong dryer outlets in all new home construction. Dan Harmon (author) from Boise, Idaho on August 23, 2017: It is fine as long as the ground strap does not contact the screws where the other wires are terminated. In the past (US) dryers then used the neutral wire as a ground; after all, it is connected to the ground in the panel. I was told I could buy and use an adapter and use that, is this true? At least it inspired you to ask, though, so maybe it's not all bad. I'm attempting to change a 4 prong cord to a 3 prong cord on a Kenmore elite dryer. Could that also be a ground wire? This is the requirement for new construction or when a new clothes dryer circuit is installed, but older installations are allowed to retain their 3-prong, 3-slot dryer cord and outlet configurations. My questions are - could it be the wiring that isn't allowing it to get power? I read your article but am still not sure. It will not carry fault current safely. I noticed when I removed the 4 prong plug. If you have a volt meter, the voltage between either of the outside wires and the center should be 120V, with the voltage between the outside wires being 240V. Jacazooy Dryer Adapter Cord 4-Prong to 3-Prong Adapter dryer Plug Nema 10-30P to 14-30R 250V STW 10-AWG External Green Ground Wire. SO WOULD YOU PLEASE PLEASE TELL ME WHAT I NEED TO DO. With the old 4-wire plug, both the green and the white wires are connected to the center post screw. Yes, leave it in place. However, if you have moved into a new house or apartment that has a 3-slot dryer outlet, then you might want to change out your 4-prong cord with a 4-prong in order to make use of that existing outlet. I didn't notice at the time, as the gentleman at the store said it would work fine when I told him what I was doing. It is, therefore, somewhat rare that you would want to change a 4-prong cord on an electric dryer to a 3-prong cord. Shut off the Power. Well, when I went to Lowe's an employee there told me it was unnecessary. BOEEMI Dryer Plug Adapter with External Ground Wire, NEMA 10-30P to 14-30R with Additional Ground Wire for 4-Prong New Electric Dryer Connects to 3 Prong … I thought I read somewhere that if that green ground wire is already connecting to the neutral the new jumper might cause a problem. My understanding is that my dryer's plug is too new for the apartment. Dan Harmon (author) from Boise, Idaho on September 11, 2018: @Lisa: There are few adapters out there, but the biggest problem is that they are not UL listed as they do not follow current National Electric Code. Nor does my manual. He has extensive experience in most areas of the electrical trade. It is much simpler and easier, and just as effective, to use that strap rather than a wire. With the wires all terminated, tighten the connector on the outside of the dryer that holds the cable securely. Unless you traced that white wire on the chassis, you can't know for sure it is connected to the neutral. A 3-prong dryer cord was the standard for dryers prior to 2000. Samsung shows a picture of my dryer but doesn't show how to change it. We put on the 3 prong but aren't sure if we did the ground correctly. My place is older (late 80's). Re-check that you have the wires in the proper position; the center wire of the cord goes on the center terminal of the dryer and the two outside wires (on a flat cord) goes to the two outside terminals in the dryer. Thanks for the help. Dan Harmon (author) from Boise, Idaho on October 01, 2017: As long as there is a wire from the frame to the center terminal, where the white wire was, it is sufficient. I think I understand everything, but how to get a grounding wire. What's the deal? A screwdriver, probably Phillips but perhaps a straight blade. While the red and black wires are interchangeable, the white wire is not; make sure it goes to the center terminal, where the old white wire was. The other wires I am attaching (that come with the cord) have a tab to screw into the bolt. The white wire provides the neutral connection on a four-wire configuration. INteresting they skip this. That is, as you say, a NEMA 10-30P and should work. I don't have the tools to remove the nut for this green wire (which is connected to the old 4 prong cord), but the white one is connected to the terminal in the middle. When the directions are followed, the neutral wire serves as a ground so the wall outlet does not need one. This AC WORKS dryer adapter is 1.5 ft. in length. These are not common, but can still be found at Amazon. Not sure what to do about the ground. Question: The white wire that is behind the white wire on the four wire plug that I am removing for the three prong plug.... can that be used for the ground wire? Is it easier to just change the cord? The homes built prior to 1996 may have a 3-hole 125/250V outlet NEMA 10-30R. Dan Harmon (author) from Boise, Idaho on September 23, 2017: I think I just answered this, Dan Harmon (author) from Boise, Idaho on August 02, 2017: Sounds like you have a range, or maybe a welder, outlet instead of a dryer. That yellow wire is going to be there to run something inside the dryer; likely the electronics but could be something else. Now, it would be convenient if there was a dryer plug adapter that you could plug into that three-pronged receptacle so that you could plug your dryer into that—but there isn't. What could possibly be wrong? Dan Harmon (author) from Boise, Idaho on May 06, 2019: No. In the US, the neutral (white) wire is grounded to the ground bus in the panel, but everywhere else in the building it is forbidden to connect the white to the ground. Some, though, simply use one set and put both dryer wires and cord wires on the same terminal post. It's a 40a circuit on a pushamatic panel. That raises the possibility of liability, which few companies are willing to do. I do have a question about the ground. Thanks, Dan. Do not operate the dryer without it - if necessary cut a piece off your old 4 wire cord but do NOT leave that ground jumper off. EASTMAN. Nice article, very clear and understandable. It's not difficult and would prevent future problems with the dryer not fitting the wall outlet. But the outlet can be changed to a 4 wire, 30 amp, dryer outlet without a problem; these are readily available at Amazon or any home improvement store. Question: I'm removing an old dryer and replacing it with a new one. Item #2743028. Instead of a jumper wire, or a ground strap, must be added, going from the center terminal to where that green wire connects to the frame. 54 sold. The outlet on the wall is a 3 prong, however all of them are straight (No L shape). What the three-wire connection will look like, including a metal ground strap (circled) between the dryer frame and the white wire. And keep the existing 4 prong cord for when you move into a house with a 4 wire outlet. Simply slide the slotted side of the plate into the slot provided on the dryer. Should I just have an electrician come and rewire the wall plug? Sold by iShopDirect. Don’t sacrifice quality due to similar appearance. I just moved into an older apartment. Out of curiosity, why are you not able to change out the wall receptacle instead of changing out the wire ? One end terminates to the center terminal, with the center wire, and the other end goes to the frame of the dryer. Leave the ground jumper where it is, going from the center terminal to the frame. Dan Harmon (author) from Boise, Idaho on August 29, 2017: My apologies. Thanks for the reply about the dryer though...I am pretty excited that I did this on my own!! If the outlet on the wall has three prongs yet the bottom is the L-shaped can I use a 3 pound with the bottom from being flat will it still work. In both cases, then, it is illegal to install the outlet. Is this correct? Or you could cut it very short, but that means it cannot be used in the future. Answer: The breaker may be turned off, it isn't wired correctly, or the dryer is faulty. Won't help, either, but won't hurt. It was running fine before I changed it. Now if the situation with your dryer cord and outlet is backwards from this—that is, you have a three-pronged cord and a four-pronged outlet—you are looking at the wrong article. Would it be safe? I get the lights but nothing when I push the button. My dryer has a FOUR WIRE CONNECTION AND THEY ARE COLOR CODED I NEED TO ATTACH A 3 WIRE AND THEY ARE NOT COLOR CODE. I am having a problem similar to something someone else posted. Should I be worried? Size:1.5FT Dryer Plug Adapter 4 Prong to 3 Prong. Dan Harmon (author) from Boise, Idaho on October 04, 2017: Many (most) dryers have a white wire on the center post that is not from the cord, but rather goes deep into the dryer. They were once very common and you're right in that it was probably originally a 3 prong. Dan Harmon (author) from Boise, Idaho on September 05, 2017: It may be redundant...or it may not. Example three-prong dryer plug receptacle. Look at this article instead: Changing A 3-Prong Dryer Cord And Plug to a 4-Prong Cord. Or you might be able to purchase an older 3-wire range cord to put on the dryer - they are available at Amazon and will we wired as indicated in the article. Question: When I did the steps my dryer shot sparks out. Hi, will any ground strap suffice? If not, considering I already have the 3 prong receptacle and the cable, is there a way to solve it? I used the ground strap from the old dryer that i put the 3 prong on. Either one is likely to be a 50 amp, meaning the 30 amp dryer will not be adequately protected unless the breaker is changed to a 30 amp breaker. So when I remove the 4-wire plug, I am not detaching the green wire from a ground (directly at least), and there remains a white wire to ground from internal. Normally, you will see a row of three terminal screws, with the red and black wires connected to the two outside screws, the white wire connected to the center screw, and the green wire connected to the frame of the dryer. New to us house. Question: I have a four plug cord and 4 plug wall socket except only 3 wires go to the wall plug. Or, if that's backwards, 10-30R and 14-30P (4 wire plug, 3 wire receptacle). Dan Harmon (author) from Boise, Idaho on July 08, 2018: If you follow the directions here, no, you will not need a ground. There is another green wire connected to the frame, separate from the plug. Dan - many thanks! It has a red and black hot wire to the two straight blades and a ground wire to the round blade. Do I still need a jumper from the center terminal to the dryer frame since the four prong wasn't grounded to the frame? C $76.75. Most machines have a double set of terminals; one set for the cord and one (that is actually connected to the first set) for the dryer parts. Age isn't much of an indicator; at 5 years old it should have come with a 4 prong but could have been converted to a 3, then back to a 4. Answer: Sounds like you have swapped one of the hot wires with the neutral on the center terminal. Plug 3-prong NEMA 10-30P 250V 30 AMP, connection jack 4-prong NEMA 14-30R 125V/250V 30 AMP. The cable is STW 10/3 Anti-cold weather which stays flexible in cold weather 10 … Dan Harmon (author) from Boise, Idaho on September 17, 2019: Absolutely! Tell me how to connect to the middle wire and the frame. Make sure there is no chance of this, by unplugging the dryer before proceeding any further. This isn't the first time I've heard that manufacturers are not including that jumper in their instructions. Atop the posts are the internal dryer wires (slotted over the ends). That is why the article was written; to explain how to do it safely. The green ground jumper goes with the other end of the jumper going to the frame of the dryer. Unit works great - but would like to know if this is going to be a concern. Neither the ground strap is to go to the center terminal; it is illegal to ground the neutral wire there, and that's what you have done. The Spruce uses cookies to provide you with a great user experience. In any case, however, can putting a jumper from the center terminal to the frame of the dryer cause any problems, so do that to make sure the dryer is grounded. There is a green screw on the dryer with a white wire going into the dryer, where to, I can't see. Same thing: no UL label and increased liability. 3 product ratings - OLD MALE 10-30P 3-PIN PLUG DRYER to NEW FEMALE 14-30R 4-PRONG RECEPTACLE ADAPTER Beyond that, the three wires that go to such an outlet are the black, red and white: there is no ground terminal on a three wire dryer outlet. HOW DO I KNOW HOW TO CONNECT THE 3 WIRES CORRECTLY. I dont know what to do next. While it is not really possible to troubleshoot with such limited information, my guess would be a temperature limiting switch. If you have a five wire cord, I'm sorry but can't help you. Dan Harmon (author) from Boise, Idaho on October 22, 2018: Leave all wires alone that are not a part of the new cord. Brand New. Do not ignore this step! Work the wire through the connector, but do not tighten it yet. By using The Spruce, you accept our, How to Change a 4-Prong Dryer Cord to Fit a 3-Slot Outlet. Before installing the three-prong cord, you will need to return your electrical connection to factory condition. But nothing for a dryer. A picture, either hand drawn or taken with your smart phone, can be very useful. But beyond that, consider just where you're going to put that ground wire, and what will be used for a neutral wire. But wait! Question: You say there is no adapter, 4 to 3 prong, but I have found several! We recently replaced the cord from 4 to 3, but now it seems the heat is not working properly. This is described in the article, and it won't make any difference whether that "ground" wire is an actual ground in the improperly wired outlet or actually a neutral. For some reason this just doesn’t seem right. Dan Harmon (author) from Boise, Idaho on July 04, 2017: Yes, the neutral is connected to your panel box. Dan Harmon (author) from Boise, Idaho on August 16, 2018: If it is at least 10 gauge wire, Mark, you could. Many dryers are placed very close to the wall where the exhaust vent is located, requiring that the hose be badly kinked in order to hook up to it, and rigid metal elbows are available to help alleviate this problem. Begin by unplugging the dryer. Dryer has white ground wire to chassis. Ground straps are available from Amazon (search there for "ground strap" and short pieces of wire are usually available at home improvement stores such as Home Depot or Lowes. That is a photo of a range outlet, not a dryer outlet. Or should I buy a new terminal block? If they are strictly internal to the dryer, not the cord, they will go to the center terminal. You will have to change the dryer cord to make it fit. It is taking 3-4 rounds to dry a batch of t-shirts on high! Answer: You can, and it will be wired the same way the article describes for a three-wire dryer cord. Any ideas? In fact, I recommend keeping the old cord, whichever way you are changing it, for future use. In any case, the new center wire on the 3 wire cord will go to the center terminal, with a jumper from there to the frame of the dryer - the green screw on the frame would be the best place to put the other end of the jumper. Remove each wire from the screw or stud holding it, making sure to save all nuts or screws. Dan, at the risk of being repetitive,(for which I apologise), I am also rplacing a four pin with a three pin plug.....I am just a little bit fuzzy on the ground strap thing. Answer: If the white wire goes from the center terminal to the frame of the dryer, it is the jumper discussed. 6 Ft. 4-Wire 30 AMP Electric Dryer Cord. Just converted a 3 wire dryer plug to a 4 wire. When dryer was delivered they hooked up a four prong cord with the white wire to the center and black and red to the two outside and the ground to the frame the dryer does not power on. Dan Harmon (author) from Boise, Idaho on August 27, 2019: The apartment outlet either has no neutral or no ground (which has been illegal for years). Question: I bought an adapter to fix this - won't that work as is if my 4-prong is wired correctly or do I have to change internal wiring? The grounding strap remains in place and remains connected to the middle position. Power cord with UL listed STW 10/3 30 Amp copper wire with 600-Volt jacket. If it doubles up with something already there, no harm was done, but if it is left out and the dryer is not grounded, it opens up the possibility of a nasty shock. Instead, a grounding jumper must be installed as shown and described in the article. Answer: It sounds like it was previously converted. Also, my mobile home originally had a gas dryer and when I asked about putting in an electric one, the manager put in a three pin I reading correctly that this is not safe? If you choose to use one anyway, follow directions (some have an extra ground wire that must be plugged into the ground hold of a nearby outlet). Also what tools will I need to complete the job? I'm having trouble finding a cord however. Lameno Dryer Plug Adapter 4 Prong to 3 Prong, Dryer Prong Adapter 4 to 3 Cord N10-30P to N14-30R, 1.5FT STW 10AWG/3 3 Prong Dryer Wash. 0. Could I use a three-prong range cord to match that outlet? or do I need to find a green wire with the same type of tabs? MY HUSBAND PASSED AWAY AND HE WOUIL DO ALL THIS TYPE OF WORK. Question: If there is already a ground strap on my dryer (like you have in the photo) will I still need to use a #10 wire? If you somehow hook it up using the neutral for a 240V supply you will blow out all the control structure on the dryer. If I can't get to it for a few days and the dryer is used (I'm out of town) does it pose a major "code red" situation? Do not re-wire the dryer. Dan has been a licensed journey-level electrician for some 17 years. The apartment maintenance says that the plug is not the problem and will deliver 220 to the dryer. If you try to go the other way, from a 3 to a 4 prong, the wiring in the wall is missing a ground so the 4 prong outlet, requiring a ground, will not have one. Congratulations! Or, if it is currently a 4 wire outlet and you need a 3 wire, it still cannot be done as every outlet must have a ground wire to it and the 3 wire outlet has nowhere to put one. This is not the best possible arrangement, but it did provide grounding safety to the frame of the dryer via a ground jumper from the center wire of the dryer cable (that's the neutral) to the frame of the dryer. Link: Dan Harmon (author) from Boise, Idaho on February 23, 2019: One end of the ground jumper goes to the center terminal, along with the center wire on the new cord. You must match the plug to the outlet. Do I leave there? Product Title For Xbox One S 6FT PA-14 2 Slot Prong Power Cord Cha ... Average rating: 4.5 out of 5 stars, based on 11 reviews 11 ratings Current Price $7.95 $ 7 . How should I connect the new cord? Question: I’m replacing a 4-prong cord with a 3-prong cord. No grounding strap visible, but there was a green ground wire attached to dryer frame. This article is accurate and true to the best of the author’s knowledge. If it really IS a very old outlet you may have to have it replaced, and by a licensed electrician. The wall outlet in your photo has three strait slots (and so does mine). Question: Where do I put the ground when changing from a 4 prong dryer receptacle to a 3 prong? I bought a used dryer and it is 4 prong, however my outlet is 3 straight prong, the middle not being the L shaped one. At the local hardware store they couldn´t find the correct 14-30 receptable, only a 3-prong one (hard to believe, I know). Timothy Thiele is an electrician who advises residential DIYers on how to make home installation projects safe and easy. Neither the dryer vent or vent elbows are expensive; consider replacing them or at a minimum clean out the vent hose and the vent opening outside your home. Problem is that the adapter, when 4 prong (dryer) to 3 (wall outlet), must use the ground as a neutral, and that isn't legal to do which in turn means there can be no UL label. You can use a #10 wire instead of a strap. Answer: Impossible to say, although it is likely. If there is a neutral and 2 hot wires in the outlet, it could be changed to a regular 3 wire outlet. The space is an inch apart? It is likely that that other white wire goes to the controls of the dryer, which normally requires 120 volts rather than 240. Style cord to a 3-prong cord the prongs of the dryer reason this just doesn ’ sacrifice.: Impossible to say, a NEMA 10-30P to 14-30R dryer outlet neither one contacts the of. 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