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Old 09-21-2010, 08:18 PM   #1
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Twin breakers

I have a Bryant electrical panel (100 Amps)that has space for 20 circuits. It is 35 years old but it is a CTL class box.. I need to add two additional circuits for a radon fan and a sump pump. I purchased Cultler Hammer BR1515 breakers (which are non-CTL). They will replace two regular Bryant breakers adding the extra place for the two circuits. I was told Cutler now owns Bryant and is the proper replacement.

When I tried to install the tandem breaker in the box, it didn't seem to fit and I did not want to force it. My questions are:
Should this breaker fit in the box?
How can I tell if this box accepts tandem breakers as the diagram and label do not indicate which slots would accept this type of breaker?
If I can't use tandem breakers, can I put two wires in a Bryant breaker, assuming I do not exceed amperage loads?


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Old 09-21-2010, 09:06 PM   #2
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Twin breakers

Make sure you didn't get a type BD1515 by mistake. I've seen the breakers in the wrong bins at the local home-horror stores on several occasions.

The BR type should fit on the buss bar without any problems. The type BD needs a notch in the buss in order to properly fit.


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jds2480 (09-22-2010)
Old 09-22-2010, 07:57 AM   #3
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Twin breakers

Non-CTl breaker should not be used in a CTL panel. They are not listed for use in that panel and installing them puts you over the number of breakers allowed in that panel.
Answers based on the National Electrical Code. Local amendments may apply. Check with your local building officials.
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Old 09-22-2010, 06:01 PM   #4
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Twin breakers

The new breakers are definitely BR1515 so I will try again to fit them in the panel. I am not worried about overloading the panel as it is only me and my wife in the house and we are not heavy users of electricity.

Is this a better option than putting two wires in one of the current breakers?
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