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YES.

By duplex breaker, you mean 'tandem breaker', a special breaker designed to allow you to get more circuits into a panel that is full or almost full.

You most likely have a 'CTL' type panel in your home.

You MUST use 'CTL' breakers, or CTL tandem breakers in that panel. By design, if you look at the bus bars that your breakers snap onto, the upper 60 percent or so is different than the lower 40 percent.

The lower bus bars are designed differently so that you cannot install tandem breakers in a certain number of spaces. This prevents you from overloading the panel.

Most people at Lowe's and Home Depot do not know this and will give you anything to put into your panel. DON'T! If the CTL tandem doesn't fit, it's not supposed to. Do NOT go back to the store to get a different breaker because that one didn't fit.Call an electrician to install a larger service and panel with more capacity. Installing non-CTL breakers to cirvumvent the safety feature can cause your house to burn down.

It costs more to rebuild your home due to electrical fire, than it would have cost to have the job done right by a professional electrician.

The above answer is correct, but I would like to add there are some States that do not allow tandem breakers.

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Q: Is it possible to overload a panel with too many duplex breakers?
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Can you use mini breakers instead of regular breakers?

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Will siemens breakers pass inspection on gould panel box?

As long as the breakers are made to fit the box, there shouldn't be a problem. you can only use breakers listed for the panel, there should be a label on the panel door. It will list all of the breakers approved for use in that panel. If you don't see the breaker by manufacturer name listed, then it should not be used. Lots of brands will interchange, but they have to be listed to be approved.


How many 20 amp double pole breakers can go into a 100 amp panel?

The provisioning of the breakers in a panel has a physical limitation regarding how many breakers will fit and a load calculation based on what devices the panel has to support. Your question really applies to both types of breakers. There are rules of thumb for sizing and populating the panel. This information is in the National Electric Code. If you have an existing panel and a new application requiring additional breakers for 220 Volt applications, the current draw in panel can be measured by an electrician and you will know what additional load you can support. If breakers fit physically in the panel, but connected devices exceed the total current capacity you will trip the main panel breaker. At this point you would need to get an electrician involved.


Are cutler hammer breakers interchangeable with American switch breakers?

Your circuit box should have a label on the door listing compatable breakers. For instance, my American Switch 200 amp panel lists what American Switch breakers are usable on that particular panel, and then it goes on to list other manufacturers whose breakers will work in the panel. Mine can use Frank Adam Type A, FA-D, QP & QPH, Bryant Type BR-D and BD breakers as well as Westinghouse Type QP and Q. I am not sure that I would go with the adage that if it fits use it. Check your Panel Box for the tag listing compatible breakers.

Related questions

Can you use mini breakers instead of regular breakers?

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What is ACDB panel?

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What is acdb?

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Name of the legend identifying the breakers inside an electrical panel?

The panel schedule.


Will GE breakers fit a Murray panel?

No, they will not work. Use only Murray breakers for safety.


Will siemens breakers pass inspection on gould panel box?

As long as the breakers are made to fit the box, there shouldn't be a problem. you can only use breakers listed for the panel, there should be a label on the panel door. It will list all of the breakers approved for use in that panel. If you don't see the breaker by manufacturer name listed, then it should not be used. Lots of brands will interchange, but they have to be listed to be approved.


How many 20 amp double pole breakers can go into a 100 amp panel?

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Will zinsco and gte circuit breakers interchange?

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First you need to determine if addition of the new breakers will exceed the 200A service under normal operating conditions. If so you will need to go to power company and increase service and put in a larger main panel. If you have the capacity for the extra current you can add a sub-panel and add the breakers there as well as the breakers you will remove from main panel to accommodate the sub-panel breaker. Another way depends on what breakers are in current panel. There are some breakers that can be duplexed in the same space as a single breaker.


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Are cutler hammer breakers interchangeable with American switch breakers?

Your circuit box should have a label on the door listing compatable breakers. For instance, my American Switch 200 amp panel lists what American Switch breakers are usable on that particular panel, and then it goes on to list other manufacturers whose breakers will work in the panel. Mine can use Frank Adam Type A, FA-D, QP & QPH, Bryant Type BR-D and BD breakers as well as Westinghouse Type QP and Q. I am not sure that I would go with the adage that if it fits use it. Check your Panel Box for the tag listing compatible breakers.