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Conveyor dryer wiring

I bought a dryer that someone tried to extend cord by splicing another line to it. the original line had 4 wires( black red white green) the extention only had 3 with the green wire left cut off and not connected anywhere. what are the functions of the 4 wires

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  • howlerone Jun 10, 2008

    this is a conveyor dryer for screenprinting

  • Anonymous Oct 23, 2008

    I recently bought a used American Screenprinting Phoenix 30 conveyor dryer. I have a similar situation in that the conveyor is wired with a 4 wire NEMA 14-50 plug and my shop has a standard 220 three-wire receptacle. Also the dryer runs at 50 amps and the receptacle has 30 amp breakers on it. Is it better to switch the dryer to a 3-wire and just put 50 amp breakers in the breaker box or is it better to just go ahead and install a 4 wire receptacle on its own line and breakers?


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Newer electrical codes call for a 4 wire receptacle. never splice appliance cords, it isn't woth the safety issue and they are not very expensive. you need to access the terminal block, which is where the cord goes into the dryer. the cord you use (3 or 4 wire) will depend on what is on your wall. if you wall has a 3 wire plug then you will need to connect the green wire from the center terminal to the frame of the dryer. there is probably a hole and screw next to terminal block. that is where the green wire goes on a 3 wire hook-up. if you have a 4 wire receptacle then the green wire should be hooked to center terminal (white). you will have to obtain the proper cord (pigtail) from a parts supplier.
J

Posted on Jun 10, 2008

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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

1 Answer

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.

Electric Dryer Prong Conversion

Aug 20, 2011 | Maytag Dryers

1 Answer

Dryer did not come with electrical cord so I bought one.


The following link explains how to correctly install a power cord on your dryer:

http://www.fixya.com/support/r3575913-installing_a_220_vac_appliance_cord

The main difference between the 3-wire and 4-wire configuraiton is how the Neutral (WHITE) wire and Ground (GREEN or BARE COPPER) wire are terminated on the terminal block in the back of the dryer:

- In a 3-wire configuration, these two wires are connected together via a ground strap at the terminal block.

Terminate the wires at the terminal block by matching the corresponding colors:

RED to RED (HOT) 120VAC
BLACK to BLACK (HOT) 120VAC
WHITE to WHITE (Neutral) 0VAC - Neutral should also have a ground strap attached that grounds it to the equipment cabinet or ground lug.

NOTE: Newer homes built after the year 2000 REQUIRE a 4-wire configuration to be in complaince with the National Electric Code. In addition, some newer appliances may not work correctly without a 4-wire power cord.

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

Dec 23, 2009 | Kenmore 62602 Electric Dryer

2 Answers

I have a wall outlet that is made for a 4 prong dryer and i have a dryer with a 3 prong, i went to the store and bought a new cord besides knowing its for a dryer do i need to know anything else, i bought...


When you put the cord on the dryer,the white wire goes to the center wire terminal. Black and red go to the 2 outside terminals right and left. The Green ground wire attaches to a ground screw outside the terminal cover.

Oct 08, 2009 | Frigidaire FEQ332E Electric Dryer

1 Answer

Dryer 4 tp 3 pring cord install


Hello wgirdler,
While it is preferred to upgrade the receptacle to a 4-prong type (which includes Neutral & Ground) Code requirements grandfather in 3-prong receptacles in older homes. So if your preference is to remove and replace the power cord on your dryer, make sure you get one that is designed for a dryer application and is 10/3 type. ( 10 Gauge wire with 3 conductors)...
Unplug the original 4 prong plug from the receptacle and pull the dryer away from the wall to gain access to the back of it.
Next, loosen the cord clamp that allows the cord to pass thru the back panel and into the druer compartment.
Open the access cover to where the end of that cord is terminated on a terminal block of the dryer.
Note which color is attached to which terminal ( red to red,black to black, white to white and green to green)...
3 Prong cables do not use a ground wire ( green) in the cord so you would wire the red to red, black to black and white to white ( The red and black are the power conductors and the white ..which is normally terminated between them.. is in the middle. You can get a seperate insulated conductor wire and route it from the ground stud of the dryer to the receptacle metal casing but do this with power disabled at the circuit breaker box...
Hope this helps.
Regards,
Rick

Nov 29, 2008 | Whirlpool LER5636P Electric Dryer

1 Answer

Trying to install 3 way cord with a 4 way replacement cord. I have disconnected all wires and put them back. My question is concerning the white wire.The wires that are already connected to the dryer red,...


In a three wire system you have 2 hot wires (black and red) and a neutral (white). the ground is connected to the neutral at the dryer. In a 4 wire system you have the 2 hot wires, neutral, and a ground. (green). The ground is connected with the neutral at the circuit panel. The hot wires at the dryer should be on the outside scres, the neutral should be in the center and the ground should be under the green screw. *****. .

Sep 23, 2008 | Dryers

1 Answer

Used maytag electric dryer installation question


First off, you should be wiring your power cord directly to the terminal block inside the dryer. If someone just cut off the cord that is terminated inside the dryer, and you are attempting to splice the new cord onto the old one.. you are making a mistake.. take the new cord and bond it directly to the terminal block inside the dryer. If you have a new 4-wire power cord, you are probably dealing with a red/black/white and green wire. ( assuming it is a four prong plug).. The black and red wires are the power lines themselves and should mate with the red and black wires inside the dryer. The green ( is frame ground) and is normally bonded to a stud near the terminal block or the dryer frame. The white is the neutral line and is normally tied to the terminal in the middle and between the red and black tie points.. In line splices should not be done on this appliance.. Hope this helps..

Sep 06, 2008 | Dryers

1 Answer

Electric dryer cord switch from 3 to four prongs when the wires aren't colored?


I wouldn't worry about that, make sure you can fully see the terminal block where the wires install. Left to right usually is black, white and red. Make sure green is on ground at the case and if there is a white wire there already, just add the green to it. The cord also on a 4 wire is coded so just line up the colors.

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1 Answer

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The difference between a 3 and 4 wire cord is the 4 wire cord separates the ground and neutral, where the 3 wire grounds through the neutral. The 4 wire cord gives an extra safety against electric shock. The red and black wires on the cord go to the red and black wires on the terminal block. Then you have to determine where the green wire on the dryer goes, if it has one. Some dryers have the green wire spliced into the white wire maybe 6 inches from the terminal block. If this is the case you will hook both the green and white wires on the dryer to the nuetral (middle) terminal with just the white wire on your cord. Some dryers have a ground strap, a flat narrow peice of metal that goes from the neutral of the terminal block to the cabinet just below it. If this is the case then remove the screw securing it to the cabinet and bend it back up onto the nuetral terminal, or remove it completely. Then hook the green ground wire from the cord to the cabinet of the dryer. Make sure all of your connections are tight, but be careful not to strip them. It's also important to hook up the strain relief to prevent any possible tugs on the cord from pulling on the terminal block connections.

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