How to Change a Circuit Breaker That Has Gone Bad

When a circuit breaker keeps tripping with little or no load, many things can be responsible.

These include:

But if you have confirmed from an electrician that your breaker is bad, replacing it is quite easy.

In this article, you will learn how to replace a bad circuit breaker.

Signs of a bad circuit breaker

The following signs may mean that a circuit breaker has gone bad.

  • If it trips easily.
  • When it cannot reset
  • If it cannot trip when it suppose.
  • A circuit breaker that is always hot.
  • If it has a burnt smell.

While these signs may mean that your circuit breaker has broken down, only a professional electrician can confirm it by checking the voltage level using his multimeter.

Required Tools and materials

  • Wire stripper
  • Screwdriver
  • Flashlight
  • Personal protective equipment like gloves and google
  • A new circuit breaker.

How to replace a bad breaker

Once you have confirmed that the circuit protector is bad, follow these steps to replace it.

1. Turn off the main circuit breaker.

Turn off the main breaker that controls all the branch circuits in the house. This is to make sure there is no current flow along the circuit.

Though some professionals change the circuit breaker without turning off the power, switch it off for safety reasons.

While turning off the receptacle, apply safety measures as you never know if explosions will occur.

Stand by the side of the breaker panel and also look away, or wear your safety google for eye protection. Also, make use of your flash light since the light is already off.

  • Test the wires with a multimeter or tester to make sure they are dead

Remove the cover plate of the breaker panel

Using your screwdriver, remove the screws holding the cover plate, and be careful not to allow the cover plate to fall on the ground.

Remove the faulty circuit breaker

Once you have removed the panel cover, locate the faulty breaker and flip the reset lever to turn it off.

Straighten out the black insulated wire connected to the breaker from the side of the panel, grip the edge of the breaker, and pull it out.

Disconnect the wires connected to the old circuit breaker

Loosen the screw terminal of the breaker and remove the black wire attached to it.

Note: When replacing a 240 volt breaker, it usually comes with two hot wires, unlike 120 volt breakers.

Disconnect those wires and remove the faulty receptacle.

Connect the wires to the new breaker

Before connecting the wire to the new breaker, reset the lever to the OFF position.

Insert the black circuit wire into the screw terminal and tighten it. On some circuit breakers, this terminal is usually labeled as LOAD or LOAD POWER.

If you are replacing a GFCI or AFI breaker, connect the white neutral wire to the provided terminal on the breaker.

Install the new breaker

Push the back of the new circuit breaker into the holder clip on the panel and make sure it fits into the bus bar.

If there is an excess wire after the installation, fold it and keep it inside the space on the breaker panel.

Replace the panel cover and turn ON the breaker

Once you are through with the installation, replace the panel cover and tighten the screws.

Turn off all the circuit breakers in the breaker box before switching ON the main breaker. This will prevent sudden high power demand from the device when you turn ON the main breaker.

When you might have switched off the branch circuits, turn ON the control switch and then the branch circuits.

Can I replace a circuit breaker without turning off the power?

Yes, you can replace a bad circuit breaker without turning off the control switch, however, it is risky.

But for any reason that makes you embark on that, make sure you protect yourself. Wear your personal protective equipment, such as your boots, overall, and hand gloves. Also, never you work in a wet environment because water is an excellent conductor of electricity.