Junction Box Splice for a 220 Volt Electric Range Cable

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How to Splice a 220 Volt Cable in an Electrical Junction Box: How to Splice Electrical Wires, What to do with the Ground Wire.

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How to Splice a 220 Volt Cable in an Electrical Junction Box

Electrical Question: I need to move an existing 220 /240volt outlet to make a new gas and electric range fit when plugged in.

  • This outlet is as old as the house which was built in 1971.
  • I don’t want to rewire the entire run, I just want to use the existing box as a junction box and run over about a foot to the new location with a plastic remodel box.
  • The problem is that there is no ground screw on plastic boxes.
    • What do I do with the ground wire in the new box?
  • Do I simply cut if off?
    • The existing outlet has three wires, two hots and a neutral I believe as the ground is attached to the box.

This electrical wiring question came from: Dennis, from Olympia, Washington.

Dave’s Reply:
Thanks for your electrical wiring question Dennis.

How to Splice Electrical Wires

Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on the personal level experience and ability to work with tools and access to the wiring.
Precaution: Identify the circuit, turn it OFF and then Tag it with a Note before performing any wiring.
Notice: Installing additional electrical wiring should be done according to local and national electrical codes with a permit and inspected.
Special Materials: Properly sized wire connectors, anti-corrosion ointment, electrical tape, junction box and blank cover.

Working with Ground Wires and Junction Boxes

  • Splicing¬† 220 Volt Cable
    • Splicing onto the existing cable and extending it to a different location is fine, just make sure to splice all the wires together color to color including the ground wire.
  • What to do With Spare Wires
    • Never cut off a wire that is not being used especially a ground wire.
    • Cap off any unused wires and if the junction box does not have a terminal or there is no provision for terminating the ground wire then do not cut the ground wire off, but keep it folded inside the junction box.

What to do with the Ground Wire

  • Junction Box Ground Wire
    • I have seen this far too often where the ground wire is cut off really short especially at switch boxes because the switch did not have a ground terminal, however it is best to keep the full length of the ground wire and fold it back into the junction box so that it is available for future use.
  • Safe Keeping for Ground Wires
    • The ground wire poses no threat even if it is a bare wire as long as the ground wire is folded into the back area of the junction box.

More about Home Electrical Wiring

Guide to Home Electrical Wire

  • Electrical Wire for the Home

  • Complete listing of electrical wire types and parts used for home projects with electrical code information serves as selection guidelines.

Home Electrical Junction Boxes

  • Electrical Junction Boxes for Home Wiring

  • Understanding electrical junction boxes and what they are used for.
  • Home electrical wiring is the process of installing electrical wire to a location that will serve electrical devices or an appliance. One very important component is the box where the wire will be installed.
  • The type and size of the home wiring electrical boxes will depend upon the circuit size, application and its location.

Wiring a Kitchen Range

  • Wiring a Kitchen Range Power Cord

  • Fully Described Electric Range Installation with a typical 220 Volt electric power cord wiring system.
  • You may find yourself with either a 3-wire or 4-wire electric range. Lets look at how the electric range is wired and what to do if your cord does not match the plug.

Electrical Grounding
Electrical Grounding Methods and Requirements

  • Electrical Grounding Methods and Requirements

  • Listing of electrical codes for grounding with examples of electrical grounding codes for home electrical wiring.

Learn How to Wire it Right with my
Complete Guide to Home Electrical Wiring
Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Wiring GFCI Outlets
Wiring Home Electrical Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
Troubleshooting and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
Electrical Codes for Home Electrical Wiring
....and much more.

» Click here to learn more about Home Electrical Wiring «
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Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all projects.

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FAQs Frequently Asked Questions and Comments

4 Responses to “Junction Box Splice for a 220 Volt Electric Range Cable”
  1. Lenny says:

    Can I splice a dryer and a range on the same 240 line?

  2. Tim B says:

    I was told that the dryer electrical wire cannot be spliced according to the Ontario Electrical Code. It must be continuous from the outlet to the breaker. Is this true?

    • Dave Rongey says:

      Hi Tim,
      I am unaware of any such code. Electrical splices here in the U.S.A. may be made as long as the splice is accessible and done using approved methods and materials for the electrical circuit and application.


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