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This thread is to compile a list of standard 120/240v panels and their ACCEPTED breakers. Please do not respond to this thread if you do not know what article 110.3(b) is. (Nobody wants to hear about you putting those Murray breakers from the dollar store into a customers homeline panel or modifying a bus to fit breakers.)

Eaton- Eaton, Cutler Hammer BR

Cutler hammer CH- CH only

Cutler hammer BR- Cutler hammer BR

Challenger- Challenger, Cutler hammer BR

Bryant- Bryant, Cutler hammer BR

Westinghouse- Westinghouse, Cutler hammer BR

Seimens- Seimens

Ite- Ite, Seimens

Crouse hinds- Crouse hinds, Seimens

Murray- Murray

Gould- Gould, Seimens

General Electric- GE

Square D Homeline- Homeline

Square D QO- QO

Federal pacific- federal pacific (replace panel)

I can never find a list online so let's make one.
 

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Discussion Starter · #8 · (Edited)
rewire said:
Cutler hammer classified breakers are listed by UL.
UL is not a manufacture specification. That just means that cutler hammer/eaton paid UL to test the breakers in other panels and they passed. That does not make it code compliant. 2 prong outlets are listed by UL would you install one today?
 

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UL is not a manufacture specification. That just means that cutler hammer/eaton paid UL to test the breakers in other panels and they passed. That does not make it code compliant. 2 prong outlets are listed by UL would you install one today?
Yes I have installed them as replacement for damaged receptacles in non grounded curcuits
 

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Discussion Starter · #16 · (Edited)
Yes the panel companies cannot void the warranty because they are tested. It is still against code to put a breaker that the manufacture does not list as an acceptable breaker, and local AHJ's fail for this reason everyday.

"Article 110-3(b) of the NEC states that Listed or labeled equipment shall be used or installed in accordance with any instructions included in the listing or labeling. Just because a breaker fits in the panel does not mean that it is okay to install it in that panel. To my knowledge, only one manufacturer has had their breakers tested and listed to install in other manufacturers panels. However, even that breaker is not allowed in a panel that is specifically labeled against installing other brands of breakers. Some panels even limit the use of certain series of their own breakers in their panels."
 

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Discussion Starter · #17 ·
Mike: Seems you had a wide variety of comments. Most seemed to indicate that the practice of installing something that the panelboard manufacturers label clearly prohibits would be putting yourself way out on the limb.

Square D's position is simple. Our panelboards are clearly marked with what circuit breakers are permitted to be installed. Installation of anything contrary to that marking will void our warranty and we will certainly make that point loud and clear should something go wrong with the installation. This is not only based on our listing, but also takes into account the 40+ years of design and application expertise our engineers put into the circuit breaker/panelboard combination.

I have seen many comments that indicate that this is only a "scare tactic,” etc. However, keep in mind that the product standards have, for many, many years, required that the panelboard be marked with the circuit breakers that are permitted to be installed, and for good reason. When manufacturer “A” says that their breaker can be installed in manufacturer “B” catalog XX-XXXX panelboard, I wonder which version of that panel they were talking about. The version made in 1998, 1993, 1989, 1985, 1980, etc? Keep in mind that the catalog number might be the same, but the design changed many times. This is where the panelboard manufacturer spends a great deal of time, making sure that things are compatible. Manufacturer “A” would have no idea what the "history" of that product was through all those years.

The vast majority of electrical inspectors (and electrical contractors) will tell you that they go by what is marked on the panel. Do anything else, has too many variables.

Jim Pauley, P.E.
Square D Company
 

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Yes the panel companies cannot void the warranty because they are tested. It is still against code to put a breaker that the manufacture does not list as an acceptable breaker, and local AHJ's fail for this reason everyday.

"Article 110-3(b) of the NEC states that Listed or labeled equipment shall be used or installed in accordance with any instructions included in the listing or labeling. Just because a breaker fits in the panel does not mean that it is okay to install it in that panel. To my knowledge, only one manufacturer has had their breakers tested and listed to install in other manufacturers panels. However, even that breaker is not allowed in a panel that is specifically labeled against installing other brands of breakers. Some panels even limit the use of certain series of their own breakers in their panels."
False.
 

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