Electric ovens and ranges require a 240-volt circuit to supply enough power to produce high heat levels at a lower energy consumption than standard 120-volt wiring. As per electrical building codes, there should be a dedicated circuit in your home with only the oven connected. Modern standards also require that the oven circuit use a four-prong, four-wire configuration. Some older circuits may be three-prong, so if this is the case in your home, then you may need to modify the circuit and install a four-prong outlet. If you are uncomfortable with home electrical applications, consult with or hire a professional to alter your circuit.
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Things you need
- Four-prong oven power cord
- Circuit tester
Turn off power to the oven circuit. You can use a circuit tester to be sure all power is off in the lines with which you will be working.
Remove the old oven, being careful not to damage or scratch your flooring. Disconnect the oven from your home's power.
Remove the cover to your new oven's junction box to access its electrical connections. Ovens do not come with a power cord connected because the use of three-prong and four-prong outlets will vary from home to home. Pick up an easy-to-attach power cord at your local home improvement store. Inside the junction box you will see four terminals, three in a row for the hot and neutral leads, and a green grounding screw below them.
Remove the copper bonding strip connecting the middle terminal to the ground, if installing a four-prong plug. This strip is in place so that the stove may be wired for a three-prong outlet. Follow the directions on the back of your stove or in your stove's manual for proper disconnection of this strip.
Install a strain relief into the power cord receptacle on the oven, but leave loose to insert the power cord. This strain relief will prevent the oven's connections from coming loose due to cord stress. Thread the cord through the strain relief and into the junction box.
Connect the red and black hot leads to the outside terminals, the green lead to the ground and the white lead to the central neutral terminal.
Tighten the strain relief and close the junction box. Plug the new oven into the proper outlet.
Position the oven and place a level on top of it. Adjust the legs of the oven until the oven sits levelled. Return power to your circuit.
Tips and warnings
- If your old oven used a 4-prong cord, you can recycle the cord for use with your new oven. Make sure to not damage the cord when removing it from the old range.
- Some homes have their ovens wired directly to the circuit, skipping an outlet altogether. If your home is like this, then you may want to consider having an outlet installed to make your new oven installation easier. You can, however, wire the new oven directly into the circuit. Make sure all connections coming from the oven match the proper leads in your house's wiring.
- Be sure your power is completely shut off to the circuit you are working with to avoid electric shock or injury.
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