How to Wire a Range Outlet 4 Prong 220V | The Complete Connection Map

Wiring a 4-prong 220V range outlet involves connecting the black and red hot wires to the outer terminals, the white neutral to the center terminal, and the green or bare ground to the G terminal, while ensuring the appliance’s bonding strap is removed for a safe 4-wire installation.

Standing in front of a new range with a four-prong cord and wondering which wire goes where is a familiar moment of uncertainty. The fix is straightforward once you understand the NEMA 14-50R pattern, but one wrong connection—especially leaving the neutral bonded to the chassis—can create a dangerous shock path. Here is the exact wiring map and the step you cannot skip.

What a 4-Prong 220V Range Outlet Actually Is

The standard US receptacle for an electric range is a NEMA 14-50R, served by a 120/240-volt, 50-amp circuit. It carries four conductors: two hot legs, one neutral, and one dedicated equipment ground. The two hot legs—black (X/L1) and red (Y/L2)—each carry 120 volts relative to neutral, and together they deliver 240 volts across the appliance. The white wire is the neutral (W), and the green or bare copper wire is the ground (G).

On a 4-wire installation, neutral and ground are separate all the way back to the main panel. This separation is the key safety difference from older 3-wire setups. For thorough guidance on selecting the right receptacle for your setup, check out our roundup of the best 4-prong range outlet options.

The Wire-to-Terminal Map

The physical layout of the receptacle terminals follows a consistent pattern, and the appliance cord connections mirror it exactly. Memorize this single table and you have the whole job.

The range cord uses the same mapping: black and red land on the two outer hot terminals of the appliance’s terminal block, white goes to the center neutral terminal, and green connects to the chassis ground screw.

Step-by-Step Wiring Sequence

The physical workflow splits naturally into the receptacle side and the appliance side. Both require the same first move.

1. Kill the power and confirm it is dead. Flip the 50-amp double-pole breaker to OFF. Use a non-contact voltage tester or a multimeter rated CAT III or higher to verify zero voltage between all conductors and ground at the outlet box. This is the one step where shortcuts are never acceptable.

2. Wire the receptacle. Strip about 3/4 inch of insulation from each conductor. Connect black to the brass-colored X/L1 screw, red to the other brass Y/L2 screw, white to the silver W/center screw, and green or bare to the green ground screw. Tighten each screw firmly; the Spruce’s guide on wiring range receptacles recommends verifying any specific torque values against the receptacle’s own instructions. Install a strain-relief fitting if the cable enters a metal box.

3. Wire the range cord. Remove the terminal cover on the back of the range. Route the cord through the rear opening and the provided strain-relief clamp—the clamp must grip the cord jacket, not the individual wires. Connect the four conductors to their matching terminals: black and red to the two hot posts, white to the neutral post, green to the ground screw. Tighten all connections and reinstall the terminal cover.

4. The critical bonding-strap check. If you are converting from an older 3-wire setup, or if the range was previously connected with a 3-prong cord, locate the bonding strap or wire that links the neutral terminal to the chassis ground. Remove it completely. On a 4-wire installation, neutral and ground must remain separate to prevent the chassis from becoming a current-carrying path.

5. Complete and test. Plug the range into the receptacle, turn the breaker back on, and verify the range powers up correctly. If the range does not operate, shut off power and recheck every connection against the table above.

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