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Topic: 3wire vs. 4wire range

User: difowler1, Location: Chapel Hill, NC

Asked on: Wednesday, April 20, 2011 at 9:13 pm EDT
Answered on: Tuesday, May 14, 2024 at 4:27 am EDT

Question: Seems like I remember reading an article about how to connect a 4wire new range when you have an older home with the 3 wire circuit. I can't find it now.

Step 1: Check the Circuit Turn off the power at the main electrical panel. Verify that you have a 3-wire circuit with two "hot" wires (usually black and red) and a neutral wire (usually white).

Step 2: Install a Grounding Rod If your home does not have a grounding rod, it is essential to install one per the local electrical code. Locate an area outside near the electrical panel and drive an 8' copper-plated steel grounding rod.

Step 3: Connect the Grounding Rod to the Panel Use #8 or #10 solid copper wire to connect the grounding rod to the ground bus in the electrical panel. Secure the wire with screws or a lug.

Step 4: Install a Grounding Wire Run a #8 or #10 stranded copper wire from the ground bus in the panel to the location of the range.

Step 5: Connect the Grounding Wire to the Range
Remove the back panel of the range and locate the terminal marked "ground" (usually a green screw). Connect the grounding wire to the "ground" terminal on the range.

Step 6: Connect the Neutral Wire
Connect the neutral wire (white) from the circuit to the terminal on the range marked "neutral."Step 7: Connect the Hot Wires Connect the two hot wires (black and red) from the circuit to the terminals on the range marked "L1" and "L2."Step 8: Secure the Wires Tighten all the terminal screws securely and ensure that the wires are properly connected.

Step 9: Close the Back Panel Reinstall the back panel of the range.

Step 10: Turn on the Power
Restore power to the electrical panel.* Check the range to ensure it is working properly. Flag for review

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