To replace an electrical outlet, first turn off the power at the breaker and confirm it is off with a voltage tester. Then remove the old outlet, connect the wires to the matching terminals on the new outlet, and reinstall it securely. If the wiring is damaged or confusing, call an electrician.
Replacing a worn or defective electrical outlet (“receptacle”) is a fairly simple repair, but it is also a job that requires care. An outlet that is wired incorrectly can create a shock hazard, damage appliances, or even cause a fire.
The good news is that replacing a standard 120-volt duplex outlet is usually straightforward if you shut off the power, test to make sure the circuit is dead, and reconnect each wire to the proper terminal. This guide shows you how to do it safely and correctly.
Quick Answer
Turn off the breaker, test the outlet to make sure the power is off, remove the cover plate and old outlet, and reconnect the wires to the new outlet: black to brass, white to silver, and bare or green ground to the green grounding screw. Then reinstall the outlet, restore power, and test it.
When to Replace an Outlet
You may need to replace an outlet if it:
- No longer holds a plug securely
- Stops working properly
- Shows burn marks or discoloration
- Feels warm or sparks when used
- Has cracked or damaged plastic
- Tests as faulty or improperly wired
If the outlet is dead, first see Outlet Not Working? How to Troubleshoot & Fix It before replacing it. The problem may be a tripped breaker, a tripped GFCI outlet, or a loose connection elsewhere on the circuit.
Before You Begin
Before replacing an outlet, buy the correct replacement type. Most standard household outlets are 15-amp duplex receptacles, but kitchens, bathrooms, garages, laundry rooms, and outdoor locations may require GFCI protection, and some circuits may use 20-amp receptacles.
Always shut off the power before working on an outlet. Then use a voltage tester to confirm that the circuit is actually off. Never trust the breaker position alone.
| Outlet Feature | What to Check |
|---|---|
| Amperage | Match the new outlet to the circuit rating—typically 15 or 20 amps |
| Voltage | Standard household outlets are usually 120 volts |
| Location | Bathrooms, kitchens, garages, and outdoors often require GFCI protection |
| Wiring type | Standard outlets are for copper wiring; aluminum wiring requires special devices |
Outlet Wire Connection Guide
A standard 120-volt duplex outlet has three basic wire connections:
- Black (hot) wire connects to the brass terminal screw
- White (neutral) wire connects to the silver terminal screw
- Bare or green ground wire connects to the green grounding screw
These connections must be made correctly. Reversing the hot and neutral wires creates reverse polarity, which can be dangerous and may damage electrical devices.
How to Replace an Electrical Outlet
1. Turn Off the Power
Switch off the breaker that serves the outlet. If you are not sure which breaker controls it, turn on a lamp or plug-in tester before shutting breakers off one by one.
Once you believe the correct breaker is off, plug in a tester or use a voltage tester to confirm that the outlet is dead.
2. Remove the Cover Plate
Unscrew the outlet cover plate and set it aside.
3. Remove the Outlet from the Box
Unscrew the mounting screws at the top and bottom of the outlet and gently pull the device straight out of the electrical box.
4. Confirm the Wires Are Not Live
Before touching any wires, use a voltage tester again to make sure the wires in the box are not energized.
5. Note Where Each Wire Is Connected
Before disconnecting anything, take a close look at how the existing outlet is wired. It may help to take a photo for reference.
On a properly wired outlet:
- Black wires are on the brass side
- White wires are on the silver side
- The ground wire is attached to the green screw
6. Disconnect the Wires
Loosen the terminal screws and remove the wires. If the wires are pushed into backstab holes, release them by inserting a small screwdriver into the slot next to the wire opening.
7. Prepare the Wire Ends
If needed, trim damaged wire ends and strip about 1/2 to 3/4 inch of insulation. Use needle-nose pliers to bend each wire into a clockwise hook.
8. Connect the Wires to the New Outlet
Attach each wire to the proper terminal:
- Black wire to the brass screw
- White wire to the silver screw
- Bare or green wire to the green grounding screw
Hook each wire clockwise around its screw so tightening the screw pulls the wire in snugly.
Though some outlets allow push-in or backstab connections, side screw terminals are generally the more secure choice. For more on making these connections, see How to Wire an Electrical Receptacle.
9. Reinstall the Outlet
Carefully fold the wires back into the box and screw the outlet into place. Then reinstall the cover plate.
10. Restore Power and Test the Outlet
Turn the breaker back on and test the outlet with a lamp or outlet tester to make sure it works properly.
Properly Orienting an Outlet
A conventional duplex outlet has a short slot for the hot side, a longer slot for the neutral side, and a round or U-shaped grounding hole. Many electricians install outlets with the grounding hole down, though some install them with the grounding hole up. Follow local practice or match adjacent outlets if you want a consistent look.
Common Mistakes to Avoid
| Mistake | Why It Matters |
|---|---|
| Working without testing for power | The circuit may still be live, creating a shock hazard |
| Connecting black and white wires to the wrong sides | This causes reverse polarity and can damage appliances |
| Using loose connections | Loose wires can overheat and fail |
| Using backstab connections when better options are available | Push-in connections are more likely to loosen over time |
| Ignoring signs of burned or damaged wiring | This may indicate a more serious circuit problem |
When to Call an Electrician
Call a licensed electrician if:
- The outlet box contains aluminum wiring
- You see burned insulation or melted wires
- The outlet is part of a 240-volt circuit
- The wiring does not match standard color coding
- You are unsure how to reconnect the wires safely
For more diagnostic help, also see Outlet Not Working and GFCI Outlet Not Working.
Find an Electrical Pro Near You
FAQ
Can I replace an electrical outlet myself?
Yes, if you are comfortable working with basic wiring and follow proper safety precautions. Always shut off the power and test the outlet before touching wires.
What wire goes where on an outlet?
The black hot wire connects to the brass screw, the white neutral wire connects to the silver screw, and the bare or green ground wire connects to the green grounding screw.
Should I use the back holes or the side screws?
Side screw terminals are generally the more secure and longer-lasting connection.
How do I know if an outlet needs replacement?
If it is cracked, burned, loose, warm, sparking, or no longer works properly, it should be replaced.
What happens if I wire an outlet backwards?
This creates reverse polarity, which can increase shock risk and may damage plugged-in devices.
Do I need a special outlet in a bathroom or kitchen?
Yes. Many locations near water require GFCI protection for safety.
