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Never upgrade the circuit breaker's amperage unless you have first upgraded the circuit. A 20-amp breaker will pop before a 12-AWG wire will melt. A 25-amp breaker cannot be relied upon to protect that same 12-AWG circuit.

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โˆ™ 2009-12-18 18:49:45
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Q: Can you replace a 20 amp circuit breaker with a 25 amp circuit breaker?
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Can you replace a 15 amp circuit breaker with a 20 amp circuit breaker?

The answer is, yes and no. Yes you can physically pull a 15 amp circuit breaker and install a 20 amp circuit breaker into the same slot on nearly all modern electrical distribution panels. No, if the wiring is only 14 gauge then the potential exists to use more amps on the circuit than the wiring was designed for and you could be creating a hazard including fire from hot and shorted lines. A 20 amp circuit require no less than 12 gauge wire. If you are having a problem with a 15 amp circuit breaker that cannot be resolved by replacing the breaker with another 15 amp circuit breaker, it's time to research why the breaker is tripping to start with. If it's tripping because there more than a 15 amp load, it's time to shed some of the existing load on that circuit.


What is the capacity in amperes 20 amp circuit breaker supplying a continuous load?

For a continuous load the circuit breaker is set 25% higher than the load current. So a 20-amp breaker is used with a continuous 16-amp load.


Can a 15 amp breaker be replace with a 20 amp?

Not a good idea. The only safe way it can be done is if by chance the wire from the 15 amp breaker is a #12 wire which is rated for 20 amps. The #14 wire which is most likely connected to the 15 amp breaker is only rated at 15 amps. By connecting a 20 amp possible load to a 15 amp rated circuit there is the possibility of heat being generated by the wire resulting in insulation failure and then circuit failure.


What size amp circuit breaker should be used for a home entertainment system?

You use the correct size breaker depending on the size wire in the circuit. If the circuit is wired with AWG #12 wire use a 20 amp breaker. If it is wired with AWG #14 wire then use a 15 amp breaker.


How do you replace a 20 amp double pole circuit breaker?

Turn the main breaker off. Disconnect the two wires connected to the existing breaker. Remove that breaker and install the new one. Connect the 2 wires to the new breaker.

Related questions

How to wire 460 volt 30 amp to 20 amp?

Just change the breaker on the 30 amp circuit to a 20 amp breaker.


What circuit is a microwave?

A dedicated 20 Amp circuit wired with 12/2 wiring an a 20 amp breaker.


New shop 20 amp circuit 32 amp fixture how many fixtures can be put on circuit?

A 32 amp fixture can not be fed from a 20 amp breaker as the breaker will trip every time.


What is a 20 amp breaker?

A 20 amp breaker is a device that opens, or turns off, or "trips", when the current of the circuit exceeds 20 amps.


Can a sub panel from a 15 amp breaker be used with a branch circuit with 20 amp breaker?

Yes but it will limit your 20 amp circuit to 15 amps. Any amperage over 15 amps on the 20 amps circuit will trip the breaker protecting the sub panel.


Can you replace a 15 amp circuit breaker with a 20 amp circuit breaker?

The answer is, yes and no. Yes you can physically pull a 15 amp circuit breaker and install a 20 amp circuit breaker into the same slot on nearly all modern electrical distribution panels. No, if the wiring is only 14 gauge then the potential exists to use more amps on the circuit than the wiring was designed for and you could be creating a hazard including fire from hot and shorted lines. A 20 amp circuit require no less than 12 gauge wire. If you are having a problem with a 15 amp circuit breaker that cannot be resolved by replacing the breaker with another 15 amp circuit breaker, it's time to research why the breaker is tripping to start with. If it's tripping because there more than a 15 amp load, it's time to shed some of the existing load on that circuit.


Does square D make a circuit breaker with a 15 amp and 20 amp breaker in the same breaker?

No tandem breakers are of the same value.


Can a circuit breaker be tripped by using 20 amp sockets instead of 15 amp sockets?

A circuit breaker protects the wires that the devices are connected to. If the devices that are connected to the circuit are 20 amps the wire size should be #12 wire fed from a 20 amp breaker. This breaker should not trip unless the circuit is overloaded or a fault occurs on the circuit. If the devices that are connected to the circuit are15 amps the wire size should be #14 wire fed from a15 amp breaker. This breaker should not trip unless the circuit is overloaded or a fault occurs on the circuit. Putting 20 amp sockets on this 15 amp circuit will work but the circuit is limited to the amount of load that can be plugged in. You will not get the full capacity of the 20 socket because the breaker will trip at 15 amps.


Can a 20 amp breaker be replaced with a 15 amp breaker?

Yes. but the load rating of the circuit will be reduced to that of 15 amps.


Can you replace a 20 amp circuit breaker with a 30 or 40 on a 110 without rewiring it?

Absolutely not. If you do this then there are several problems that will not trip the breaker, but will set fire to your house.


Can you use a 20 amp circuit breaker for a light circuit?

As long as the light circuit isn't over 20 amps.


Is there any disadvantage of selecting over rated circuit breaker?

If i understand you correctly, yes there certainly can be. If you replace, say a 10 amp breaker with a 20 amp. you are losing the safety factor - the whole purpose of the breaker to begin with. Always replace a breaker with the exact same amperage rating!

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