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How-to replace a circuit breaker

Updated: 8/17/2019
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14y ago

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If you need to ask this, might I suggest an electrician? There is serious power in the box. Answer for USA, Canada and countries running a 60 Hz power supply service. Shut the main breaker off and use a battery light source to see what you are doing. After removing the panel cover you will be able to see what type of breakers are in the panel. There are two types, push-in or bolt-in. Shut the breaker you want to change-out to the off position. Remove the load wire from it. If the breaker is a push-in type, pry with moderate pressure to the side of the panel while lifting up on the breaker. If it is a bolt-in type just unscrew it from the bus bars. Install your new breaker: with a push-in breaker seat it firmly onto the bus with a hard push. With a bolt-in beaker a bit of caution should be taken not to cross-thread the screw into the bus. If this connection is not tight, arcing could result. Over time this connection could fail and may cause the panel to be changed out due to bus failure. Don't over torque the screw. Replace the load wire and cover and you are done. SAFETY ADVICE Before you do any work yourself, on electrical circuits, equipment or appliances, always turn off the power at the breaker or fuse panel BEFORE you attempt to do any work and always use a test meter to ensure the circuit is, in fact, de-energized. IF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOB SAFELY AND COMPETENTLY PLEASE REFER THIS WORK TO QUALIFIED PROFESSIONALS.

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Q: How-to replace a circuit breaker
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Replace the 30 Amp Breaker with a 15 Amp breaker.


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No. The breaker must protect the circuit components such as wiring, outlets and switches that are connected to the breaker. Therefore if you have a 30 amp circuit as dictated by its components you need to protect it with a 30 amp or less breaker.


What is a Circuit breaker and explain type circuit breakers?

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