Dan has been a licensed journey-level electrician for some 17 years. That has comprehensive experience in most areas of the electric trade.

You are watching: 240 volt 4 prong to 3 prong adapter

Congratulations! You've simply moved right into your brand-new home, the new drapes room up, and also the washer and also dryer are all set to it is in put into place. But wait! The dryer cord won't plug in—the dryer cord has 4 prongs, but the wall surface receptacle only has three holes! What's up v this?

What's up is the in 1999, the National electric Code describe a change, request all new dryers and home dryer receptacles to have actually 4 prongs rather of the older 3-prong style. That fourth prong is a ground wire and also is over there for far better electrical safety. The older outlets are "grandfathered" in the rule change and are fairly legal to use if currently in place, yet you will need a brand-new cord to fit it.

Now, it would certainly be practically if there to be a dryer plug adapter the you can plug into that three-pronged receptacle so that you can plug her dryer into that—but over there isn't. Friend will have actually to readjust the dryer cord to do it fit.

The great news is that dryer cords space readily easily accessible and fairly inexpensive, and also it isn’t an extremely hard to switch them. Amazon tote dryer cords in a wide variety of lengths, and also home advancement stores will usually have actually one or 2 sizes together well. A screwdriver and a pair that pliers will execute the job, although some nut chauffeurs would it is in nice.

Now if the situation with your dryer cord and also outlet is backwards from this—that is, you have actually a three-pronged cord and also a four-pronged outlet—you are looking at the not correct article. Look at this write-up instead: an altering A 3-Prong Dryer Cord and also Plug to a 4-Prong Cord.

If Your wall surface Plug Looks like This...




Removing the Old Four-Prong Plug

Begin through unplugging the dryer. Over there is high voltage inside (240 volts) the can provide you a very nasty shock, also kill you. Do sure over there is no opportunity of this by unplugging the dryer before proceeding any further.

There will certainly be some sort of connector stop the dryer cable to the wall surface of the dryer so the it doesn't traction out. The most common type is a clamp through two screws on the exterior that can be tightened to squeeze the wire into place. Loosen this screws so that the wire can slide the end of the dryer.

Remove the sheathe plate native the wire terminal block, exposing the wires inside. Keep in mind where each shade of cable terminates. A picture, one of two people hand attracted or taken through your clever phone, can be very useful. Normally, friend will see a heat of three terminal screws, through the red and also black wires connected to the two outside screws, the white wire linked to the center screw, and also the environment-friendly wire connected to the frame of the dryer.


The four-pronged cord has been loosened from the dryer wall surface and is all set to be disconnected from the terminals. Pay specific attention to wherein the white and green wires go.

Remove each wire from the screw or stud holding it, making certain to save all nuts or screws. A seed driver or socket is preferred however a pair the pliers is usually enough to loosen and remove the wires.

Work the old wire out of the connector the holds it come the wall surface of the dryer, and set it beside for feasible future use. Friend never know when you can move again, and Murphy's legislation says that if friend do, it will certainly be back into a residence with a four-prong dryer plug!


Here the four wires have been removed and a metal ground strap installed between the dryer frame and the white wire. You can use a #10 wire rather of a strap.

Installing the Three-Prong Dryer Cord and also Plug

Once the four-wire cord is removed, it is time to download the new three-wire cord and plug. Work-related the wire through the connector, yet do not tighten it yet. The red and black wires go to the outer two terminals (in the picture the dryer wires space black and blue) and also the white wire goes come the terminal in the facility of the terminal block. When the red and also black wires room interchangeable, the white wire is not; make certain it goes come the facility terminal, wherein the old white cable was.

Most three-wire cords execute not have actually colored wires, so rather of equivalent colors determine the wires using the relative position of the wires in the cord. The center wire that the three will constantly go come the center (white) terminal; the outer two wires go to the outer terminals. The outer two wires deserve to be interchanged, however never placed the center wire that a flat, three-wire cord top top anything but the facility terminal.

Your three-prong cord will certainly not have actually a environment-friendly ground wire. In place of the wire a ground strap or quick piece the #10 cable (preferably green) must be installed. One finish should walk to where the green wire on the old cord went, and also the other end to the terminal where the white cable went. Do not disregard this step! girlfriend must have a "jumper" of part kind, a wire or strap, installed in between the dryer frame and the white wire. This jumper is the only thing the grounds the dryer. Without it, if over there is one electrical trouble later, the framework may become energized and also present a large shock hazard.

The picture shows a steel strap installed; the goes indigenous the white wire down the side of the terminal block, and is screwed to the dryer frame. If this strap is not available (and it commonly isn't) acquisition a one-foot piece of #10 green wire, strip an customs of insulation from every end, and install that wire between the connector the white wire supplied to go to and the connector top top the framework where the green wire provided to go.

What the three-wire connection will look like, including a steel ground strap (circled) in between the dryer frame and also the white wire. You have the right to use a #10 wire rather of a strap.

With the wires every terminated, tighten the connector top top the outside of the dryer the holds the cable securely.

It is wise to turn the strength off at this point, just in situation something has been wired wrong. Through the strength off, plug the dryer right into the wall surface outlet and also turn the breaker back on. Test the dryer for suitable operation and you're done. Congratulations top top doing your own house repair job! the wasn't therefore bad, to be it, also though that dryer cord adapter friend really want isn't available?

A last thought: currently that you have actually your dryer operating properly, the vent hose might need part attention. Older, plastic, vent hoses are not recommended together a fire hazard, and even more recent metallic ones compromise over time. Plenty of dryers are placed very close come the wall surface where the exhaust vent is located, requiring that the water tap be bad kinked in order to hook as much as it, and rigid steel elbows are easily accessible to aid alleviate this problem. No the dryer vent or vent elbows space expensive; take into consideration replacing castle or in ~ a minimum clean out the vent hose and the vent opening external your home. If you're in ~ it, examine that the vent external operates correctly, closing when the dryer is not running so that insects and little animals cannot acquire in. Whether you acquisition your brand-new cord in ~ a local home advancement store or through the Amazon link above, both vent hoses and elbows are accessible and deserve to be purchased at the exact same time as the brand-new cord.

This short article is accurate and also true come the best of the author’s knowledge. Content is for informational or entertainment purposes only and does no substitute for an individual counsel or expert advice in business, financial, legal, or technical matters.

Questions & Answers

Question: ns am transforming a four prong dryer cord to a 3 prong cord. My trouble is the absence of a ground cable on the brand-new three prong cord. I observed the instructions online, it explained about the ground connection plate & the #10 wire. Well, as soon as I checked out Lowe's one employee there told me it was unnecessary. She said she was educated in electrical things & assured me she knew what she was talk about. So which is it? carry out I have to ground it to the human body of the dryer, or deserve to I simply hook the brand-new three prong cord up and roll with it?

Answer: friend may believe a Lowes sales person who is "educated in things" or friend may think an electrician with twenty years of useful experience that has read and understood the electric code the the US as well as what ground connection does and also why it is necessary. Her choice: should you choose experience and understanding of electricity then put the floor strap in as described.

I did not administer explicit directions and also photos for a ground connection wire because it watch pretty; ns did it because grounding is essential for safe operation of her dryer and also is required by law.

Question: mine dryer had actually a green and also yellow cable in the center terminal. Can this be provided as a floor wire?

Answer: impossible to say, although that is likely. You would have to find the other finish of the wire and also verify that is attached to the frame of the dryer.

Question: my 4 prong cord had the eco-friendly wire attached to the exact same terminal as the white wire. Does that median that my center terminal is grounded currently and the I perform not should run a new jumper?

Answer: it is possible. It is also feasible that the is not. In any type of case, however, can putting a jumper indigenous the facility terminal to the structure of the dryer cause any problems, so perform that to make sure the dryer is grounded.

Question: My new dryer has three terminals ~ above the back, yet I should use a 4 prong cord. Therefore does the green and also white wire go to the middle together?

Answer: No. The green wire goes to the framework of the dryer; any place top top the framework that it deserve to be attached. One pointer is wherein the "jumper" native the facility terminal to the structure is, and then eliminate that jumper indigenous the center terminal.

It sounds like you room in the not correct article; you require the one that describes changing a 4 wire cord come a 3 wire: https://hubpages.com/appliances/changing-a-3-prong...

Question: my dryer had two white wires in addition to a green, black and also red where does the extra white cable go?

Answer: space those wires in the cord, making that a 5 wire cord? If they space strictly interior to the dryer, not the cord, they will go to the facility terminal. If you have actually a five wire cord, I'm sorry but can't help you.

Question: I’m replacing a 4-prong cord through a 3-prong cord. Have the right to I use the eco-friendly wire indigenous the 4-prong cord because that the 3-prong cord?

Answer: If you room asking if friend can reduced off the eco-friendly wire native the 4-wire cord and also use it together the jumper wire defined in the post when installation a 3-wire cord, the answer is yes. It is that the suitable size and also will execute the project nicely.

The only an adverse is that as soon as you relocate again, you might need that 4-wire cord when more.

Question: ns bought one adapter to fix this - won't that job-related as is if my 4-prong is wired correctly or execute I have to adjust internal wiring?

Answer: I have not found any kind of adapters that room UL listed, an interpretation they do not meet the security regulations the the National electric Code. If you pick to use one anyway, follow directions (some have an extra ground wire that have to be plugged right into the ground hold of a adjacent outlet). Execute not re-wire the dryer.

Question: have the right to you adjust the 3 cable outlet into a 4 cable outlet? Is it simpler to just readjust the cord?

Answer: friend cannot change a 3 cable outlet come a 4 cable outlet without running new wire from the dashboard to the outlet - over there are only 3 wires there and you need 4. Girlfriend most definitely CAN readjust the cord, despite - cords are conveniently available, the is a an easy task and also is quite legal and also safe to adjust the cord out.

Question: If there is currently a soil strap on mine dryer (like you have in the photo) will I still must use a #10 wire?

Answer: No. That is much simpler and easier, and just as effective, to use that strap rather than a wire.

Question: ns noticed the my three-prong dryer cord doesn't complement my three-prong outlet. I have actually 10/2 WG cable to the outlet. Could I usage a three-prong variety cord to complement that outlet?

Answer: girlfriend can, and also it will be wired the same way the article describes because that a three-wire dryer cord. The biggest worry is the breaker size and the ampacity the the outlet; both need to be 30 amp. If the breaker is larger than that, it won't carry out the appropriate protection for the dryer or the wire.

The ideal option, though, can be to placed in a three-wire dryer outlet fairly than the range outlet. It's not difficult and would protect against future problems with the dryer not fitting the wall surface outlet. Just don't shot to download a four-wire outlet--there aren't enough wires because that that.

Question: You claimed to purchase a foot that #10 green wire, why a foot? The space is an inch apart?

Answer: most stores will not market you an inch. Your prices room per foot. Plus, the course, not every dryer in the country has a ground lug within an customs of the center terminal; just some that them.

Question: as soon as I did the procedures my dryer shoot sparks out. I took the ground bowl off but then the dryer shocked us. What have to I do?

Answer: Sounds choose you have actually swapped one of the hot wires with the neutral on the center terminal. Re-check that you have actually the wires in the ideal position; the facility wire that the cord go on the center terminal of the dryer and the two external wires (on a level cord) goes to the two exterior terminals in the dryer.

Question: I’m replacing a 4-prong cord through a 3-prong cord. The 3-prong walk not have actually a eco-friendly wire. After I acquisition a #10, just how do i situate the environment-friendly ground wire on the 3-wire cord?

Answer: that does no go top top the cord. One end terminates come the facility terminal, v the facility wire, and the other finish goes to the frame of the dryer. Most most likely there is a spot where the old environment-friendly wire went; put the 2nd end there.

Question: ns am do the efforts to convert my three cord dryer to a 4 cord, however I don't have a real estate unit that the cords screw right into to do a male connection. Just how should I attach the new cord?

Answer: If her cord is permanently attached to the dryer - soldered or crimped permanently in location - I'd contact an electrician or an appliance repairman to install the brand-new cord. It may not it is in possible, though I've never ever seen a dryer developed that way.

Are you positive that there isn't a little "door", or cover, that deserve to be eliminated after acquisition a screw or 2 out?

Question: many thanks for the info very helpful. Ns do have actually a question around the ground. Every little thing I view is that the unit is currently grounded come the maker thus you simply hook increase the 3 wires. I have a four-year-old LG that has actually a white wire the runs over to a link that has a eco-friendly cap. Is that functioning as the wire connection you described, just the seller has taken care of the floor issue?

Answer: If the white cable goes indigenous the center terminal come the structure of the dryer, that is the jumper discussed. However, if that is, that was no legal to it is in there through a 4 wire cord!

I would include a jumper, just in case. If the doubles up v something already there, no damage was done, but if that is left out and the dryer is no grounded, it opens up up the possibility of a nasty shock.

Question: I have a 4 plug cord and 4 plug wall socket other than only 3 wires walk to the wall plug. The dryer plug fits the wall surface plug yet when running, arcing occurs from the it is provided lines. Is this safe to use?

Answer: I'm just guessing here, however it sounds like someone in the past has taken the easy way out and replaced the 3 wire wall surface outlet with a 4 wire outlet. Unfortunately there are only 3 that the 4 wires necessary in the wall surface - what they did come hook it increase is difficult to know.

But if you're acquiring sparking from anywhere something is bad wrong. You need to uncover out just where those three wires in the outlet room going in the electric panel and also get a 3 wire outlet, correctly wired, into the wall, followed by a 3 cable cord come the dryer. The is neither legal nor for sure to use only 3 wires to hook increase a 4 wire wall outlet.

Question: there is a green wire the is comes from the dryer and connects to the frame. Should it be moved from the framework to the facility wire?

Answer: No. Instead of a jumper wire, or a floor strap, must be added, going from the facility terminal to whereby that eco-friendly wire connects come the frame. Leave the green wire whereby it is and add the jumper.

Question: once removing mine old 4 prong cord from mine dryer, the white and green wires to be both with each other on the center terminal and the red and black on the outsides. I likewise have a green wire with a yellow strip going native the dryer structure to within the dryer. Perform I still need a jumper native the facility terminal to the dryer frame since the 4 prong wasn't grounded to the frame?

Answer: Yes. Leaving the soil jumper where it is, going indigenous the facility terminal to the frame. There is no a ground, the brand-new three cable cord has actually no other method to ground the frame of the dryer.

It is curious that a 4 wire cord had that jumper, and also that the green and white were terminated together. Either the manufacturing facility made an error or who in the past readjusted cords incorrectly.

Question: would certainly a jumper be copper from the middle white to the frame? go it require a 10 AWG wire or deserve to I use the copper the they have actually in the dryer already? over there is a pre-existing flat copper item from the white cable to the frame.

Answer: the is the preferred technique of grounding the dryer. No added wire is vital if the bonding strap is already in place from the center, white wire, terminal to the frame.

Question: girlfriend say there is no adapter, 4 come 3 prong, but I have found several! What's the deal?

Answer: Be very careful: I uncover lots of adapters produced welders or other 240V stuff, so they can run off the dryer outlet. But nothing for a dryer. Back the plugs might LOOK similar, castle won't fit unless specifically created a dryer. They must carry the NEMA designation of 10-30P (3 cable plug) and also 14-30R (4 wire receptacle). Or, if that's backwards, 10-30R and 14-30P (4 cable plug, 3 wire receptacle).

I also see lots of "twist-lock" cords that will plug into a dryer outlet: these room 240V expansion cords that are plugged together and also twisted to lock them in place. A dryer cord walk not execute that and won't fit also though that looks similar.

Amazon offered to carry one, and it still shows up, yet has to be unavailable for part time now. Trouble is that the adapter, once 4 prong (dryer) to 3 (wall outlet), must use the ground as a neutral, and also that isn't legitimate to execute which in turn means there deserve to be no UL label. The raises the possibility of liability, which few companies are willing to do. If you go the various other way, 4 prong outlet and also 3 prong dryer, girlfriend now have to affix the neutral to the ground inside the adapter and also again, the isn't legal outside of a dryer that is grandfathered under the law. Exact same thing: no UL label and increased liability.

Question: The white wire the is behind the white wire on the 4 wire plug that i am removing for the three prong plug.... Can that be used for the floor wire?

Answer: No. That is likely that that other white wire goes to the controls that the dryer, which usually requires 120 volts quite than 240. Leaving it whereby it is and include another ground wire to the frame.

Question: I have actually a 4 cable feed (white, red, black, bare ground) in my wall surface for the dryer, female wall plug only has connections because that 3 wires (3 prong plug) I recognize to hook up the ground climate red and black hot wires however where walk the white cable go, or deserve to it it is in capped off and also tucked away?

Answer: First, you should recognize that it is not legal this particular day to placed a 3 prong outlet in the wall; if there are four wires there, climate they need to all it is in used, and a 4 wire dryer cord be used to connect to the dryer.

Beyond that, the three wires that go to such an outlet space the black, red and also white: there is no floor terminal on a three wire dryer outlet.

Question: What if the dryer still doesn't rotate on after doing everything correctly?

Answer: The breaker might be turn off, that isn't wired correctly, or the dryer is faulty. There isn't much other option.

Question: Where execute I placed the floor when transforming from a 4 prong dryer receptacle to a 3 prong?

Answer: there is no ground wire in a 3 wire cord. Instead, a ground connection jumper need to be mounted as shown and described in the article.

Question: will certainly not hooking increase the 2nd ground wire to the middle an altering a 4-1 come a 3-1 cause the dryer to not heat?

Answer: No; both the power and also the neutral wires are still there and still hooked simply as before. Every you space doing is offering a ground because that the chassis of the dryer.

Question: Where perform I affix the old white wire? perform I affix it to the same place with the brand-new green wire?

Answer: The white wire in the dryer that disappears inside the dryer quite than being in the cord have to stay where it is--in the facility termination point. That's likewise where the brand-new white cable in the cord goes, though many three-wire cords space not colored, and it is merely the center wire that the cord. The environment-friendly ground jumper goes with the other end of the jumper going to the structure of the dryer.

Question: deserve to I usage a bolt and also nut to organize the bottom wire in place, or is that dangerous provided that electricity is involved? Or have to I to buy a new terminal block? The bottom connector come out and won’t stay in place now. I have actually a 30-year-old Maytag dryer.

Answer: A nut and also bolt is fine. Simply be certain that no one contacts the structure or wall of the dryer.

Question: ns just acquired a new stackable washer & dryer. I hooked up the 3-prong to the earlier red cable on the top and the white in the middle, and black ~ above the bottom. Execute I leave the floor strap hooked as much as the white wire? (neutral position)

Answer: If you are using a three prong cord, girlfriend will require the soil strap linked to the center, white, wire. Yes, leaving it in place.

Question: I'm trying to find either a ground connection plate or ground connection strap online. Can you provide a particular link or more specific terms to search for so i order the appropriate length and also size? also what devices will I need to complete the job?

Answer: It will certainly not be feasible to specify precisely what your dryer will require for a grounding strap. If you are collection on a floor strap quite than a item of wire (a couple of inches that #10 wire will do fine) you might take a look at what you will need and also visit one automotive components store. Lock should have actually a range of lengths.

Some nut chauffeurs would it is in nice, but pliers will do. A knife or some other method of stripping wire might be necessary. A screwdriver, more than likely Phillips however perhaps a directly blade. It's a pretty simple task and also doesn't require a box complete of tools.

Question: I adjusted my four prong come a 3 prong, hooked it up properly, and the dryer ran for 30 minutes prior to quitting. The was to run fine before I changed it. What can possibly it is in wrong?

Answer: space your connections tight? Is there a "hair" of a wire shorted come the following terminal and also causing the breaker to trip? I'd inspect those for a begin - there isn't much else that might go not correct after 30 minutes and be a reason of the failure.

And of food it is always feasible it was time for the dryer to die. Coincidences perform happen!

Question: I'm removing an old dryer and replacing it with a brand-new one. Now obviously I have to switch the new 4 prong plug come a 3 prong plug. Would certainly it be OK to salvage the 3 prong cord from the old dryer and also use it because that the brand-new dryers plug (the only reason I'm convert dryers is simply since I was given a newer far better model) so over there shouldnt be any issues through the 3 prong cord being damaged or anything choose that. Would certainly it be safe?

Answer: Absolutely. If there is no apparent damage to the cord then re-use it on the brand-new dryer. And keep the present 4 prong cord for when you move into a residence with a 4 cable outlet.

Question: I have actually 4 prong wall outlet and I'm thinking to connect a european dryer through 2 prong Schuko plug. If Canadian 4 prong plug has actually 240V between two hot wires in ~ +- 120V each, the German Schuko is 230V ~ above one pin and also neutral because that the 2nd one. Can you check out if this is a problem?

Answer: Yes, that is a problem. American, and I assume Canadian, dryers require 120 volts because that the controls. Europe operation on a 240V system, i beg your pardon is why over there is no 120V easily accessible there. Friend must have two wires offering 240V for the heater element and a supply, using the neutral, for 120V because that the controls. If you in which method hook it up utilizing the neutral because that a 240V supply you will blow out all the control structure top top the dryer.

Question: i am changing a four prong come a three prong, however the green and also white wires from the cord were both attached come the facility connection top top the dryer. Over there is a environment-friendly screw top top the dryer through a white cable going into the dryer, where to, i can't see. To be this dryer formerly converted to a four prong? Not certain what come do around the ground. I was called by the previous owner the dryer is 4 or 5 year old.

Answer: it sounds favor it was previously converted. Age isn't much of one indicator; at 5 year old that should have come with a 4 prong yet could have been convert to a 3, then ago to a 4.

In any case, the brand-new center wire on the 3 cable cord will certainly go come the center terminal, through a jumper from over there to the frame of the dryer - the eco-friendly screw ~ above the framework would it is in the ideal place to put the other end of the jumper. Leave the existing white wire whereby it is; it will certainly be used to run the controls and also needs to be there.

© 2011 Dan Harmon


James ~ above April 29, 2020:

Very nice write up. Made it simple.

Jim top top January 27, 2020:

Nice article, really clear and also understandable.

Dan Harmon (author) indigenous Boise, Idaho top top November 06, 2019:


The only wires that have to be disconnected room those the were the 4 prong cord friend removed. That yellow wire is going to be there to operation something inside the dryer; likely the electronics however could it is in something else. Leaving it ~ above the facility terminal where it was.

Most machines have a twin set the terminals; one collection for the cord and also one (that is actually associated to the first set) for the dryer parts. Some, though, just use one set and placed both dryer wires and also cord wires on the very same terminal post.

Jill ~ above November 06, 2019:

I am changing my cord native 4 prong to 3 prong. I have put the environment-friendly wire earlier where it had actually been. I noticed as soon as I was placing the center neutral wire on that there had actually been a yellow wire from the machine connected to center location have to it tho be linked to that center wire?

Dan Harmon (author) native Boise, Idaho on September 17, 2019:

Absolutely! In fact, i recommend maintaining the old cord, whichever means you are transforming it, for future use. If that cord is no obviously damaged it will be fine.

I just changed out a selection cord (the troubles are the very same with varieties with 3 and also 4 wire cords), because that the same factor you are an altering your dryer cord. And I offered the variety cord from the range I was acquisition out.

Sumner Owen ~ above September 17, 2019:

I'm removed an old dryer and also replacing it through a brand-new one.Now clear I have to switch the brand-new 4 prong plug come a 3 prong plug. Would certainly it be ok to salvage the 3 prong cord indigenous the old dryer and also use it for the new dryers plug( the just reason I'm switching dryers is simply because I was given a newer much better model) so there shouldnt be any issues v the 3 prong cord being damaged or anything prefer that. So would it it is in ok to execute so?


The apartment outlet either has actually no neutral or no soil (which has been illegal because that years). There need to never it is in an unused terminal in an outlet.

But you're top top the appropriate track; if you attach the ground cable in her cord come both ground and also the center terminal it must work. That IS exactly how a three wire cord functions anyway - the neutral and also ground are linked inside the dryer. Any kind of wires coming from the dryer mechanism should be left simply as castle are; simply connect the cord "ground" (or neutral if that's what it in reality is) come the facility terminal v a jumper to the framework of the dryer. This is defined in the article, and it won't make any difference whether the "ground" cable is one actual floor in the improperly wired outlet or actually a neutral.

A side keep in mind - her landlord is exactly in that the outlet will supply 240 volts to the dryer. What that is skipping is that a dryer additionally requires 120 volts, and that the wire offering that (the neutral) is missing.

David on respectable 27, 2019:

I just purchased a brand-new dryer and live in one apartment. There is a four prong outlet but only has 3 wires come it. It has actually a red and black hot wire come the two directly blades and also a ground cable to the ring blade. When dryer was delivered they hooked increase a 4 prong cord through the white wire to the center and black and red to the two outside and the ground to the frame the dryer does no power on. The apartment maintenance claims that the plug is no the problem and also will provide 220 to the dryer. I have noticed in operation manual that i can attach the ground cable to the facility terminal. But there is likewise another white wire from the dryer attached to the center. What have the right to I do if something to gain the dryer to strength on?

Dan Harmon (author) from Boise, Idaho on respectable 02, 2019:

The vent water tap could definitely be a problem. The is unlikely, but possible, that you have actually put the center wire top top an exterior terminal; be certain that the center, or white, cable is on the facility terminal.

Emma on august 02, 2019:

Hi Dan!

We newly replaced the cord native 4 come 3, however now it seems the heat is not working properly. That is taking 3-4 rounds to dried a batch of t-shirts top top high! would certainly it be a absent step in the cord? might the vent water tap be a difficulty as well?


Dan Harmon (author) indigenous Boise, Idaho on July 18, 2019:


First, it is no much longer legal to download an outlet without a ground, i beg your pardon is what the 3 prong setup is. If you shot to go the various other way, from a 3 to a 4 prong, the wiring in the wall surface is missing a ground for this reason the 4 prong outlet, request a ground, will certainly not have actually one.

Brandon top top July 17, 2019:

Out that curiosity, why are you not able to readjust out the wall receptacle instead of transforming out the wire ? Thanks.!

Yes, you can purchase a replacement, 3 prong, cord. If you room asking if there is an adapter of some sort; none that I would recommend; I in reality recommend that any kind of such adapter no be used.

Dom on might 14, 2019:

I have a regular three prong outlet and a 4 prong dryer cord is over there a replacement cord for that

Dan Harmon (author) indigenous Boise, Idaho on might 06, 2019:

No. You must enhance the plug come the outlet. The L shaped bottom prong is traditional for dryers.

Jo on may 06, 2019:

If the outlet ~ above the wall has three prongs however the bottom is the L-shaped deserve to I use a 3 pound with the bottom native being level will it still work

Dan Harmon (author) from Boise, Idaho top top April 07, 2019:

Hi Emily:

Yes, there room adapters the come and go on Amazon. This one is typical: an advertisement from China, in broken English, claiming to have actually a UL approval yet failing to rubber stamp it on their product as forced by UL. They're ready to do a single cord to your specification, but it expenses a an excellent deal to get a UL listing and they will certainly lose hundreds of dollars trying to carry out so because that each product produced.

But beyond that, think about just where you're walk to placed that floor wire, and also what will be used for a neutral wire. Over there IS no neutral in the wall, so any "neutral" in the adapter is not one at all. The advertisement says to ground that eco-friendly wire come a 15 amp outlet (it doesn't say whereby to connect it or wherein to find one more outlet the the wire will certainly reach) - electrical code in the US requires a #10 ground wire to the panel and also a 15 amp outlet only has actually a #14 wire. It will certainly not lug fault existing safely.

Buy and use the adapter at your very own risk; i wouldn't usage it.

Emily ~ above April 06, 2019:

Hi, a small bit off topic yet you stated that over there is no adapter. I'm looking at this adapter from Amazon. Is this it s okay to buy instead of a dryer cord and also rewiring as you described? Link:


Dan Harmon (author) from Boise, Idaho ~ above February 23, 2019:


One end of the floor jumper goes to the center terminal, together with the facility wire on the brand-new cord. The other end attaches anywhere on the body/frame of the dryer; wonderful point is where the 4 cable ground attached.

Frank Testa ~ above February 21, 2019:

Thanks, Dan. But your explanation of just how the ground cable is mounted needs to it is in clearer. Tell me just how to connect to the center wire and the frame. I'm dealing with a conversion from a 4-prong cooktop cord to a 3-prong cord. Thanks

Dan Harmon (author) indigenous Boise, Idaho top top February 21, 2019:


I am not familiar with wiring demands in Costa Rica. In the US, the neutral (white) cable is base to the floor bus in the panel, yet everywhere rather in the structure it is forbidden to affix the white come the ground.

In the previous (US) dryers then supplied the neutral wire as a ground; after all, it is associated to the ground in the panel. This is no the best possible arrangement, yet it did carry out grounding safety to the framework of the dryer via a floor jumper native the facility wire that the dryer cable (that's the neutral) come the frame of the dryer. It's an excellent enough that as soon as the electric code adjusted it was allowed to remain in numerous homes.

So if Costa Rica grounds the neutral wire in the panel box it will occupational fine as far as safety goes. I have no method of knowing if that is legal to do, though, and you have to install a jumper together described above between the facility terminal and also the frame of the dryer. Again, assuming you space using a dryer intended for the united state market.

This isn't the first time I've heard that manufacturers are not consisting of that jumper in your instructions. I don't know if over there is currently one there (there really should not be for a 4 wire cord) or if they are just assuming that current codes apply to every houses. But even if it is already there it can not hurt to put an additional one in - be sure to install that jumper!

Jonathan Araya ~ above February 21, 2019:

Hello, Dan.

I´m a civil engineer from Costa Rica trying to understand electric topics.

Great article by the way!

In my brand-new house we had actually a 4-prong 14-50 Nema receptable because that the dryer, prefer the people you usage for her Kitchen. (I checked the circuit and also has a 30 amp breaker). So, i filed a insurance claim to the construction company to adjust it.

At the neighborhood hardware keep they couldn´t discover the exactly 14-30 receptable, only a 3-prong one (hard come believe, ns know). They download it. I´m not certain what they do with the soil cable coming from the breaker, i think they cut it and wrap tape roughly it.

- I´m clear around the US electric code about the 3 prong connection it´s outdated. Nevertheless of that, will this connection work? I´m worry around the soil cable. If not, considering I currently have the 3 prong receptacle and the cable, is there a method to resolve it?

- I just read my Whirlpool Dryer install instructions and does not pointed out anything about the ground for the 3 receptable to the dryer´s frame. Interesting they skip this.

on November 14, 2018:

Thanks for the help. I had switched cords and also then check out your site and also learned that i did not have a ideal ground. I used the floor strap native the old dryer that i placed the 3 prong on. Thanks for conserving me native a shock

Chris ~ above October 25, 2018:

Hi dan, i have actually a dryer i got from mine inlaws next door, at yheir residence its ~ above a 4 prong and works great, i adhered to your steps and when placed in my home on a 3 prong that runs because that a minute and also shuts off, i took it ago to their house and also it works simply fine there, however still shuts off at my house... Any kind of idea what i could be dealing with?

Dan Harmon (author) indigenous Boise, Idaho on October 22, 2018:

Leave all wires alone that are not a part of the new cord. The only exception is the floor wire/strap when an altering FROM a 3 wire cord come a 4 cable cord; the one is to it is in removed.

If you are change from a 3 cable cord come a 4 cable cord, you have actually the wrong article. View https://betterworld2016.org/appliances/changing-a-3-pron...

DG on October 22, 2018:

I'm transforming a 3 prong cord come a 4 prong cord on mine samsung dryer. I put the soil green/yellow stripe ground wire from the dryer v the white cable in the middle as instructed. What execute i do about the little green wire listed below the cable panel cover. Samsung shows a snapshot of mine dryer but doesn't present how to change it. No one does mine manual. Have to I leaving it alone since it is on the white panel outside the cover. It does come from the dryer. Might that also be a ground wire?

Dan Harmon (author) native Boise, Idaho top top September 11, 2018:

Lisa: over there are couple of adapters the end there, yet the biggest difficulty is the they room not UL detailed as they perform not follow existing National electrical Code. I perform not introduce them; rather I strongly recommend replacing your 3 prong cord with a 4 prong. The is lot cheaper, simple to do and also provides the safest method of making use of the new dryer.

Lisa on September 11, 2018:

I just obtained a new dryer (used) that is 4 prong and also my old dryer was 3 prong. I was said I might buy and also use one adapter and use that, is this true?

Dan Harmon (author) indigenous Boise, Idaho on august 29, 2018:


Absolutely the is safe if excellent correctly. That is why the write-up was written; to define how to perform it safely.

Crystal on august 28, 2018:

I am converting a 4 prong right into a 3 the is safe right

Dan Harmon (author) native Boise, Idaho on respectable 16, 2018:

If it is at the very least 10 gauge wire, Mark, friend could. Very couple of speakers usage that large a wire, despite - many systems are using 18 gauge or smaller (bigger numbers mean smaller wire).

Mark on august 10, 2018:

Hey can I usage speaker wire for mine jumper wire

Dan Harmon (author) from Boise, Idaho ~ above July 08, 2018:

If you follow the direction here, no, you will certainly not need a ground. As soon as the directions are followed, the neutral wire serves as a ground so the wall surface outlet go not require one.

This is only legal in the case of one older house with a 3 prong dryer outlet, however.

Willie top top July 08, 2018:

I purchase a drier with a 4 prone cord an had a 3 vulnerable receptical do u need a ground come hook up for the drier come work

Dan Harmon (author) indigenous Boise, Idaho on June 17, 2018:


Yes. You MUST have actually either a cable (preferably green) or a soil strap to walk from the center terminal come the grounding allude - the "green nail". Perform not run the dryer without it - if necessary cut a item off her old 4 cable cord but do not leave the ground jumper off. House repair shops market both floor straps and also wire.

Butterscotch Goddess on June 17, 2018:

I just adjusted from 4 prong to 3 prong but I have actually no green wire to placed on the green nail. Is the a problem?

Chris on might 04, 2018:

Very straightforward to convert. Mine had actually a eco-friendly wire screwed down along with the white center wire. I simply produced my own twin ended environment-friendly wire, attached the one end in addition to the white center wire and the other finish jumpered end to the frame where the dryer regulate white ground cable was screwed to.

Dan Harmon (author) indigenous Boise, Idaho top top April 23, 2018:

Hi Sanielle:

In a 3 prong cord you have actually it right; the facility wire is the neutral and the outer two space the black and also red. Over there is no ground wire at all in the cord, unequal the 4 prong cord the was ~ above the dryer to start with. Instead, the neutral is law "double duty" after making the alters described in the article.

Sanielle top top April 23, 2018:

Hi Dan,

I'm attempting to change a 4 prong cord come a 3 prong cord ~ above a Kenmore elite dryer. Mine cords room not color coded. For this reason the center cord is the white wire and the other 2 room black and also red (I'm speak of the cords that aren't labeled)? i beg your pardon cord will be the grounding cord?

Dan Harmon (author) native Boise, Idaho top top April 08, 2018:

Hi Betty:

The facility wire of the flat, 3 wire, cord corresponds to the white wire of a 4 wire cord. The outer two exchange mail to the black and also red in the 4 wire cord (it doesn't issue if they space swapped). There is no eco-friendly (ground) in the 3 wire cord.

Betty on April 08, 2018:

My dryer has a four WIRE CONNECTION and THEY ARE color CODED I require TO attach A 3 WIRE and also THEY space NOT shade CODE. Just how DO i KNOW just how TO affix THE 3 WIRES CORRECTLY. ONE man AT LOWES told ME the I would HAVE adjust THE PLUG and also THE move AT THE BOX and THEN i WAS TOLD i DID NOT have to DO every THAT. SO would certainly YOU you re welcome PLEASE phone call ME WHAT I should DO. Mine HUSBAND passed AWAY and HE WOUIL do ALL THIS type OF WORK. Thanks BETTY

Dan Harmon (author) indigenous Boise, Idaho top top February 10, 2018:

Hi Kay. I'm assuming the green dryer is attached come the frame of the dryer somewhere - no to among the terminals the various other wires use.

If it is, leaving it whereby it is and add a jumper cable or soil strap between the facility terminal and also the screw wherein that green wire attaches to the frame. If that is hanging free, use a screw to attach it come the framework somewhere and include that jumper wire.

Kay on February 10, 2018:

My dryer had 4 plug and the environment-friendly wire was v the eco-friendly from plug my 3 plug as 3 wires all gray so i put center wire in middle and other2 either next what do I do with this eco-friendly wire native dryer

Dan Harmon (author) indigenous Boise, Idaho ~ above October 30, 2017:

It's claimed to be a #10 but, yes, a brief piece the #12 will certainly work. Or maybe a surrounding home improvement carries ground straps? Amazon does, ns know.

Jennifer Jones ~ above October 30, 2017:

I cannot uncover a #10 grounding wire... Will certainly a #12 work?

Dan Harmon (author) native Boise, Idaho ~ above October 04, 2017:

Many (most) dryers have actually a white cable on the center write-up that is not from the cord, however rather walk deep right into the dryer. Friend did ideal in just leaving the there. Over there will likewise be the floor wire that goes both there and to the structure of the dryer, to add the center wire that the new cord. Two, more than likely 3 and maybe even much more wires on that center terminal.

Kaycie on October 04, 2017:

We have actually a 4 prong dryer and also need to put on a 3 prong cord. We put on the 3 prong but aren't sure if us did the ground correctly. There was a white wire that we put on middle prong with middle wire. I read your write-up but to be still not sure.

Dan Harmon (author) indigenous Boise, Idaho ~ above October 02, 2017:

Most most likely one of the two exterior wires is not connected properly. Loose, or left turn off entirely.

CL on October 02, 2017:

Once girlfriend have readjusted the wire and the dryer runs, is there a factor it will certainly not now heat now once it walk before an altering the wires?

Dan Harmon (author) from Boise, Idaho on October 01, 2017:

As lengthy as there is a wire from the frame to the facility terminal, whereby the white cable was, the is sufficient.

Maggie top top October 01, 2017:

I simply went to change my 4 prong plug come a 3 prong and discovered the fourth, eco-friendly grounding wire was connected in the very same spot as the white wire, together opposed come being associated to the dryer frame. There is another green wire connected to the frame, different from the plug. Will certainly that be sufficient along with the brand-new 3 prong plug?

Dan Harmon (author) indigenous Boise, Idaho on September 24, 2017:

No, however do get it done as soon as friend can.

SleePac ~ above September 24, 2017:

Dan - plenty of thanks! If i can't get to it because that a couple of days and also the dryer is offered (I'm out of town) does the pose a major "code red" situation?

Dan Harmon (author) from Boise, Idaho top top September 23, 2017:

I think I simply answered this, but...no. Neither the ground strap is to go to the center terminal; that is illegal come ground the neutral wire there, and that's what you have done. Instead, eliminate the soil strap from that terminal, eliminate the green wire native there, and put the green wire to whereby the other finish of the soil strap attaches come the structure of the dryer.

SleePac ~ above September 23, 2017:

I simply switched indigenous a three prong come a 4 prong cord.

I left the ground connection strap assembled and also just doubled up the green and also white wires top top the center terminal block position. The ground connection strap stays in place and remains linked to the center position.

Is this a safe and also acceptable practice / layout? Unit works an excellent - yet would favor to know if this is going to be a concern.


Krystal top top September 18, 2017:

I believed it could be the the terminal ring I supplied was too low a voltage or miscellaneous so ns tried there is no it and also still nothing. I'll examine with a voltmeter tomorrow and also let you recognize the results. Thank you

Dan Harmon (author) from Boise, Idaho top top September 18, 2017:

Check that the various other two connections are snug. If you have a voltmeter, each of the outside two terminals should show 120V to ground or neutral, or 240V in between the two.

Krystal on September 18, 2017:

I switched the cord come the 3 prong cord and also cut a piece of the ground cable off the 4 prong then included an amp ring terminal come the reduced end climate attached one finish to the floor screw and also the various other to the neutral yet its not working. I obtain the lights yet nothing once I press the button. Any kind of ideas?

Dan Harmon (author) from Boise, Idaho top top September 18, 2017:

While the is no really feasible to troubleshoot through such restricted information, my guess would certainly be a temperature limiting switch. Somewhere in the dryer is a temperature sensor that will certainly shut it off if the temperature goes too high. Ns don't watch it getting that hot in just a few seconds, which would certainly seem to show that that sensor or the move is bad. It's just a guess, though, and could it is in something else. Have you checked that the discharge pipe is clear and also not plugged v lint?

Greg on September 18, 2017:

I hoped this would solve my trouble , but it didn't --- when I revolve my Roper dryer ~ above , it runs for around 10 seconds , climate shuts turn off --- any kind of ideas ?

fourevrjarhead top top September 05, 2017:

Thanks Dan. I thought that was the case, simply wanted verification.

Dan Harmon (author) native Boise, Idaho top top September 05, 2017:

It might be redundant...or it may not. Uneven you traced that white cable on the chassis, friend can't understand for certain it is associated to the neutral. Friend did appropriate by running one more wire - a hundreds wouldn't hurt. Won't help, either, however won't hurt.

fourevrjarhead top top September 01, 2017:

Dryer has actually white ground wire to chassis. Is it still important to connect ground strap or jumper to neutral post? ns did operation a jumper cable from neutral come chassis ground. Might be redundant,but is it ok? TIA, Don.

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Dan Harmon (author) native Boise, Idaho on august 29, 2017:

My apologies. That is a picture of a selection outlet, not a dryer outlet. At the very least it influenced you to ask, though, so possibly it's not all bad. Purchase a selection cord and you must be fine.