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Electrical Wire and Cable

Four Wire Oven to a Three Wire Circuit

By Dave Rongey - Summary:

How to Make the Electrical Wiring Connections for a 3-Wire or 4-Wire 240 Volt Electric Oven

Wiring Diagrams for 3 and 4 Wire Ovens

Electrical Question: My new oven has four wires one black one white one red and one ground but my house has only a black a white and ground.
How should I connect the oven? black to black and white to white and ground to ground but what do I do with the red wire from the oven?

This electrical question came from: Randy, a Homeowner from Hurst, Texas.

Dave’s Reply:
Thanks for your electrical question Randy.

Wiring Connections for a 3-Wire or 4-Wire oven

How to Make the Electrical Wiring Connections for a 3-Wire or 4-Wire 240 Volt Electric Oven


Oven Electrical Wiring Connections

Lets look at how the electric oven is wired and the possible solutions if your circuit does not seem to the same.

For more information about 220 Volt Wiring Diagram
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Home electrical wiring includes 110 volt outlets and 220 volt outlets and receptacles which are common place in every home. See how electrical outlets for the home are wired.

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4 Responses to “Four Wire Oven to a Three Wire Circuit”
  1. Dave Rongey says:

    Hi Doug,
    Please see the page as described in the article: Wiring a Kitchen Oven
    On that page you will see photos, wiring diagrams, and a full explanation that will assist you with wiring your oven.

    As for the circuit wiring coming out of the wall:
    Typically older homes with an existing 240 volt oven circuit had the white wire which was used for the red wire, and the installing electrician did not color or identify the white wire as such. However the circuit wiring should be verified using a voltage tester.
    I hope this helps,

  2. Doug says:

    I am installing a new electric wall oven. The oven has: RED, BLACK, WHITE, and BARE wires. Coming out of the wall I have: BLACK, WHITE, and BARE wires. Should it be wired : WHITE-WHITE , BLACK-BLACK , BARE-BARE? Where does the RED wire connect? Or, should I purchase a new oven cord, or run new 4 wire cable from the breaker box? Thanks for your help in advance!
    Doug G., Sweeny Texas.

  3. Dave Rongey says:

    Tim, I would check the wiring on the GFCI Outlet to make sure that the wring is correct, making sure that the Line and Load wiring designations are correct. If it is found that they are then it is possible that the GFCI outlet may be defective. I’m sorry to say that there are some General Contractors and Builders who may be licensed, but they don’t have adequate training to perform home electrical wiring. This is something I sincerely hope to see changed in future State Licensing Laws.

  4. Tim Doyle says:

    I have a GFI outlet that has two additional “downstream” regular outlets set in a kitchen. I have tested it with an electrical circuit tester. All three come up that they are wired correctly, but that one with the actual breaker will not trip. The problem is that the GFI will kick (when tested with the circuit tester) on the two additional outlets, but the one with the actual breaker will not trip! I have installed several of these in the past but this one was installed in my girlfriend’s condo by a very unscrupulous builder.