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Old 10-02-2011, 06:04 PM   #1
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room for a tandem breaker?

I would like to get a small chest freezer for the basement, and I would like it to be on its own dedicated circuit. I have a QON 20-40MG200 panel, and some of the breakers were replaced with tandems by an electrician when our kitchen was remodeled. I would like to know:
(1) Is there still room for more tandems?

Also, how can I tell
(1) if a tandem will fit in place of a single and
(2) how many tandems are allowed in the panel (for future reference)?

Many Thanks in advance for the help!
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Old 10-02-2011, 06:29 PM   #2
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room for a tandem breaker?

Usually there is a label inside the panel cover that shows the layout and where the tandem breakers can go. That panel designation leads me to think it is a 20 space , 40 circuit panel (meaning the tandems can go in any space.)


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Old 10-02-2011, 06:35 PM   #3
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room for a tandem breaker?

tandems will go in all of the single pole breaker have a 20 slot 40 ckt if you want more 120 volt or a 240 ckt,change some single pole breakers to tandems to gain slots.
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Old 10-02-2011, 07:43 PM   #4
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room for a tandem breaker?

Just becarefull some of the QO panels with tandem breakers there are two verison one is CTL and other is Non CTL breakers.

The quickest way is check one of your tandam breaker and see if you have a cam finger below of the breaker that is CTL tandem breaker while the one sans cam finger is non CTL breaker.

There is a bit of price diffrence as well.

Your panel will have no issue take tandam breakers at all.

The answer will be based on NEC ( National Electrical code ) or CEC ( Cananda Electrical code ) or ECF ( Electrique Code France )
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tandem breaker

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