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Electrical Wire and Cable
Electrician Training Electrical Certification wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Electrical Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable

Wiring a Dryer Power Cord

clothes-dryer-wiring
Summary: Electrical wiring for a dryer power cord has a typical 240 Volt electric power cord with 3-wire and 4-wire wiring configurations. Many people may experience the situation of trying to make a older dryer work with an new four wire receptacle. This article will explain what options you have to get your dryer wired and running.


How to Wire a 3Wire Cord and 4Wire Cord Dryer Cord



The 3-Wire Configuration is generally found at older homes. If you have an older electric dryer with a three prong 220 volt plug you have 2 Options: Most electric dryers can be wired to work with either a 3-wire or 4-wire circuit.

The 4-Wire Configuration has been adopted and applies to all new installations. The 4-wire circuit which has a separate insulated neutral wire and the separate ground wire along with the 2-hot wires. In this case where the home is newer than the old electric dryer the following describes what you would have to do.

Instructions

Option 1:
You will need to purchase a 4-Wire Dryer Cord. Remove the 3-Wire Dryer Cord and install the replacement 4-Wire Dryer Cord. Next where the wires are connected to the electric dryer you will need to remove the Bonding Jumper which goes between the frame Grounded Screw and the Neutral Terminal as shown in the 3-WIRE HOOK UP wiring diagram below.
If this jumper does not exist then you will need to attach the Ground Wire from the 4-Wire Cord to the metal frame of the electric dryer.

Option2:

Purchase a 3-Wire Outlet. Turn the circuit off and replace the 4-wire outlet with the 3-Wire Outlet and do not connect the Neutral wire to the outlet.

Wiring Option1: Wiring Option2:
OLDER HOMES AND ELECTRIC DRYERS NEWER HOMES AND ELECTRIC DRYERS
IMPORTANT:
The following steps apply ONLY if the dryer specifically states that it can be wired for either 3-Wire OR 4-Wire Connections. Some new dryers may require a Separate Insulated Neutral Wire AND a Separate Ground Wire for a 4-Wire Connection Only.
Be sure to consult your dryer installation manual
specifications for the configuration that is allowed.
3-wire-dryer-cord 4-wire-dryer-cord
3-wire-dryer-outlet 4-wire-dryer-outlet

NEMA 10-30R 30AMP-125/250VOLT

NEMA 14-30 30AMP-125/250VOLT
This system can be adjusted depending on what your wiring configuration is.
For example you may have one of the following conditions:
converting an old 3-wire outlet
to a new electric dryer
converting a new 4-wire outlet
to an old electric dryer



More About Wiring a Dryer Cord




related

Maytag Dryer Cord Replacement Model LDE 8000


I bought a used dryer today and my apartment is updated with the 4 prong power receptacle. Once the back cover was removed on the main board there was three terminals top to bottom in a row there is two wires one red and black, on the second terminal two white wires, and on the third one blue wire. Well I'm not sure how to place the new 4 prong on this existing board because the new plug has 4 wires a white, red, black, and green. Can you please direct my effort on this old dryer. Thank You Barry

Dave's Reply: Typically the older 3 wire dryers do not require the separate neutral wire, but they do need the ground wire, and the two power wires.

Electric Dryer Wiring Diagram


I just want to say how much my husband and I appreciate this dryer wiring configuration that you have made available for us. Thank you very much again!

Dave's Reply: Your welcome Tammy, I'm glad the dryer wiring diagram has helped you!

3 Wire Dryer Cord to a 4 Wire Dryer Cord


I need to convert an old 3 wire outlet for a new 4 wire dryer what is the easiest thing to do with this problem.

Dave's Reply: Calvin, new dryers require a 4-wire circuit only, and you must verify this with your own dryer by referring to the owners manual or the installation manual. Some dryers may allow a 3-wire cord to be used, however if you find that your new dryer does not allow a 3-wire cord to be used then a 4-wire circuit will need to be installed, which is best accomplished by hiring a qualified licensed electrician.

4 Wire 30 Amp 240 Volt Dryer Circuit


Dave, in changing a three wire dryer hook up to a four wire, what does the connection in the circuit breaker panel look like; since you would be running a 10/4 circuit? Appreciate your answer, Nelson

Dave's Reply: Nelson, the typical connections for a 240 volt 30 amp 4-wire dryer circuit in a panel is as follows: The Black and the Red to the 2-pole 30 amp circuit breaker. Bare or Green insulated Ground wire to the Grounded terminal strip. The White Neutral wire is terminated depending on the electrical panel: If this is the Main Panel the grounds and neutrals share the same terminal strip. If this is a Sub-Panel then the White Neutral is terminated on the isolated Neutral terminal strip which is not bonded to the grounded panel enclosure.

PLEASE NOTE:
Unless you are a Qualified Electrician do not attempt working in an electrical panel, Contact a Qualified Licensed Electrician to perform any work involving an electrical panel.

Recent Questions about Dryer Cords


Dryer Cord and Electric Circuit Wiring
My Dryer Cord that is Too Short, Can I Splice the Wires? I want to move my dryer to the other side of the laundry room but the cord isn't long enough.

3 Prong Cord Wiring For An Electric Dryer
Connecting 3-Wire and 4-Wire Dryer Cords: How to Hook Up 3Wire and 4Wire Dryer Cord.

Installing a Washer Dryer Unit with an Existing Dryer Plug
Will my 240volt 3 prong outlet work with a new dryer with a 250volt with a 4 prong cord? How to Connect 3 Prong and 4 Prong Plugs for a Washer Dryer Combo.

Wiring a NEMA 14-30P Cord for a Electric Dryer
How to Wire an Electric Dryer Cord: Electrical Circuit Requirements for an Electric Dryer. Understanding the circuit and outlet wiring for a dryer.

3 Prong to 4 Prong Electric Dryer Plug
My Dryer has a 3 prong to 4 prong plug setup and my dryer is not working right, what am I doing wrong? How to Wire a 3-wire Clothes Dryer: You may find yourself with either a 3-wire or 4-wire electric dryer, or a 3-wire or 4-wire outlet.

Wiring an Electric Dryer for a 3-Wire Cord
How should I wire the connectors for a dryer cord? Wiring a Dryer Cord: How the electric dryer is wired and what to do if your cord does not match the plug.

How to Wire a Dryer Motor Switch
Wiring an Dryer Motor Start Switch: Dryer Motor Centrifugal Start Switch, Dryer switch number 3388235 is the motor switch which has 2 sets of terminals, with three wire connections on each side.

Electrical Wiring Conversions for Clothes Dryers
How To Convert a Clothes Dryer Electrical Cord and Outlet - The 240 Volt and 250 Volt Dryer Outlets are actually one in the same, however the plug configurations may be different.

See more at the Electrical Questions Category Listing.
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Wiring Home Electrical Circuits
Electrical Wiring for a Laundry Room
Wiring Electric Dryer Cord
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Electrical Tip

The Safest Way to Test Electrical Devices and Identify Electric Wiring!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester, [amazon.com], I use for the detection of Standard Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

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