What you need to do before touching anything

Before you remove a single screw, turn off the breaker that controls that outlet. Go to your electrical panel, find the breaker labeled for that room or circuit, and flip it to off. Then go back to the outlet and test it with a lamp or phone charger to confirm the power is actually gone. Do not skip this step — electricity can kill you.

Once you have confirmed the power is off, you can safely remove the cover plate by unscrewing the single screw in the center. Set it aside. The outlet itself is held in place by two screws on the top and bottom of the metal box. You will unscrew those next, but the wires are still connected, so work slowly and do not pull hard.

Key Takeaways

  • Always turn off the breaker and test the outlet with a lamp before you start work, because live electricity in the outlet can cause serious injury.
  • The two brass screws hold the hot wire, the two silver screws hold the neutral wire, and the green or bare screw holds the ground wire — write down which wire goes where before you disconnect anything.
  • New outlets cost between $1 and $5 each, and the whole job takes 10 to 15 minutes once the power is off.
  • If the wires are too short to reach the new outlet or if the box is cracked, you may need to call an electrician rather than replace it yourself.

Disconnecting the old outlet

Gently pull the outlet out of the box until you can see all three wires connected to the back. You will see two brass screws (one on top, one on bottom), two silver screws (one on top, one on bottom), and one green or bare screw. The brass screws hold the hot wire, the silver screws hold the neutral wire, and the green screw holds the ground wire.

Before you touch anything, take a photo or write down which wire color is connected to which screw. This matters — putting the wires on the wrong screws will either make the outlet not work or create a fire hazard. Loosen each screw by turning it counterclockwise until the wire comes free. Do this one wire at a time so you do not mix them up.

Installing the new outlet

Check that your new outlet is rated for the same voltage and amperage as the old one. Standard household outlets are 15 amp, 120 volt. If you are replacing an outlet in a kitchen or bathroom, it should say GFCI (ground fault circuit interrupter) on the face — these outlets have a test and reset button and are required by code in wet areas.

Take the first wire (the one that was on the brass screw) and insert it into the brass screw hole on the new outlet. Tighten the screw clockwise until the wire is snug but not crushed. Repeat for the silver wire on the silver screw and the ground wire on the green screw. Pull gently on each wire to make sure it does not slip out.

Once all three wires are connected, carefully push the outlet back into the box. The outlet should sit flush against the box — if it does not, the wires may be too short or the box may be damaged. Screw the outlet to the box using the two screws on the top and bottom, then screw the cover plate back on.

Testing your work

Go back to the breaker panel and flip the breaker back on. Return to the outlet and plug in a lamp or phone charger to confirm it works. If nothing happens, turn the breaker back off and check that all three wires are still connected tightly. If the outlet still does not work after you have checked the connections, turn the breaker off and leave the outlet alone — call an electrician.

If you installed a GFCI outlet, press the test button on the face. The outlet should lose power. Then press the reset button and the power should come back. This confirms the GFCI is working correctly.

When to call an electrician instead

If the wires are too short to reach the new outlet comfortably, do not force them. Stretched wires can overheat and cause a fire. If the metal box is cracked, rusted, or damaged, replace the box as well — this is more involved and usually requires an electrician. If you see more than three wires in the box (for example, if two circuits share the same box), stop and call an electrician, because the wiring is more complex than a straightforward replacement.

If you turn the breaker back on and the outlet sparks, smells like burning plastic, or the breaker when ready trips back off, turn the breaker off again and call an electrician. These are signs of a wiring problem that you should not try to fix yourself.

Tools and materials you will need

You need a screwdriver (usually flathead, though some outlets use Phillips head), a lamp or phone charger to test with, and the new outlet itself. If you want to be extra safe, buy a non-contact voltage tester for $10 to $20 — you touch it to the outlet and it beeps if power is present, which is a faster way to confirm the breaker is actually off.

The outlet itself costs $1 to $5 for a standard outlet and $10 to $20 for a GFCI outlet. Buy the same type and rating as the one you are replacing. If you do not know what you are replacing, take a photo of the old outlet and bring it to a hardware store — staff can match it for you.

Frequently Asked Questions

What if I cannot find the right breaker for that outlet?

Turn off the main breaker at the top of the panel — this cuts power to the entire house. Then you can work safely. Turn it back on when you are done. This takes longer but is completely safe.

Can I replace an outlet while the power is on if I am careful?

No. Even if you think you are being careful, a slip or a moment of distraction can be fatal. Always turn off the breaker and test the outlet first. This takes 30 seconds and is not optional.

What does the third hole in the outlet do?

That is the ground hole, and it connects to the green or bare wire. It protects you if something goes wrong with the appliance. Never block it or use an adapter to plug a three-prong plug into a two-prong outlet — if you need a three-prong outlet, replace the outlet with one that has three holes.

Do I need a permit to replace an outlet myself?

Permit rules vary by city and county. Some places allow homeowners to do their own electrical work without a permit; others require a permit and inspection. Call your local building department and ask before you start. If a permit is required and you skip it, you may have trouble selling the house later.

What if the outlet is in a wall and I cannot see the breaker label clearly?

Turn off breakers one at a time and test the outlet after each one until it stops working. That is the right breaker. Turn it back on, then turn it off again before you work. It takes longer but it works.