How to Change a Circuit Breaker in the Panel box

How to Change a Circuit Breaker in the Panel box
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If you have determined that there is a faulty breaker in the home panel and you have found a compatible module to replace it, plus If you want to know how to change a circuit breaker, you can replace the breaker by following the steps below.

List of tools that can help how to change a circuit breaker

  1. Screw driver
  2. Rubber gloves
  3. Safety shoes (if available)
  4. Marking tape 
  5. multimeter
  6. Voltage detector 

Used safety equipments:

Running electricity can be very dangerous. Therefore, be careful when trying to reduce the risk of electric shock.

Turn off every single breaker:

how to change a circuit breaker

First of all, turn off all individual circuit breakers. If you turn off only certain breakers, then the supply will continue in the remaining breakers.

Turn off the main power supply:

Each control panel has a master switch that you must turn off before you can work on your control panel. In some cases, this master switch is located on a different control panel than your personal control panel.

Test a panel with multimeter:

Even if you switch off the main power supply to your panel, a failure in this system could mean that the power supply continues to work. Always check the panel components for power before touching them.

Note the amperage of faulty breaker:

Make note of the faulty circuit breaker. He will help you install a new circuit breaker. You can easily compare with each other.

Unlink the old circuit breaker and connect it to the neutral terminal nearest to the circuit breaker and to the ground terminal.

Inspect your panel for unused panel slots:

If your panel has an unused panel slot, you can install your new spare switch in the unused slot before removing the damaged one. You mark this new switch so that it doesn’t have to be in exactly the same place as the old one.

Double check your circuit breaker:

Single pole circuit breakers are suitable for currents of 120 volts, and double-pole circuit breakers are suitable for currents of 240 volts. The rated amp of the circuit breaker shall not exceed the rated power of the power conductor. Typically 15 amps for 14 gauge copper, 20 amps for 12 gauge copper, and 30 amps for 10 gauge copper.

Locate the breaker’s mounting contacts:

Interchangeable switches have mounting contacts near their bottom. One is the mechanical assembly of the circuit breaker housing and the other is the electrical contact. First of all, turn on the non-electrical contact point and carefully push the shell down to connect the electrical mounting components to the control panel.

Pull the Breaker Out:

Pull the circuit breaker straight out to remove it from the rail. The housing of the breaker has an outer corner that fits into the bus slot. You may need to turn or pull the breaker slightly to release the tab.

Very important tip how to attach the wire:

You can see the screw terminal and most people put the wire under the screw and they are completely wrong , you need to insert the wire in between those two small plates nearly close under the screw head and screw down tight.

Replace the cover and test:

Make sure the newly installed circuit breaker is positioned comfortably. Replace the control panel cover and turn on the main toggle button. Now turn on the newly replaced switch. If it works without stumbling, you’re done.

Last words:

Circuit breakers usually don’t need to be replaced unless they are worn, damaged, or don’t work properly. You should replace the breaker if it is hot to the touch, smells like it is burning, or if there is visual damage such as black or charred material or frayed wires.

A quality circuit breaker should last a long time. Breakers don’t always cause electrical problems or short circuits. The problem can come from another location. Therefore, you should use all other options before blaming the breaker for any issues that arise.

If you are not sure why the circuit breaker shuts down so often and you are unable to determine the problem, you should seek professional help.