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Does anyone make 2 pole AFCI breakers that can be used on MWBCs?
Some manufacturers make them. What brand do you need
 

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as far as I know, cutler hammer and ge. both junk brands.
 

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I know that Siemens has them as I have used the 20a before. As for being pricey, I think it was actually cheaper to buy one of them vs two single pole AFCI breakers.
 

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as far as I know, cutler hammer and ge. both junk brands.
So the only good brand is the one you use-- I get it..:no:

Yes CH makes one but GE uses two single pole breakers

 

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I know that Siemens has them as I have used the 20a before. As for being pricey, I think it was actually cheaper to buy one of them vs two single pole AFCI breakers.
That is about right-- It is about the cost of 2 sp afci breakers
 

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Thanks for the info. Does Square D make one for QO or Homeline?
The last time I asked they said no but that was a few years ago.
 

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If the MWBC has an arc fault on one of the circuits, will the 2-pole breaker kill both circuits?
 

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Our SH had a letter from them at some point stating that they do not and would not make one. (SqD). It was my preferred brand, and still is if we are doing new work, but if you are retrofitting something, gotta get another brand. :censored:
 

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Cutler Hammer has a CL series "classified" breaker that will fit in pretty much any 1" breaker panel legally.
They come with a pamphlet of approved panels and it's pretty much all of them.
My C-H dealer supply house has them in stock or can order anything I want.
 

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If I had them in my house I would pull them all out...by far one of the more stupid rules we have.
 

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Well, I would not do that in my house then (MWBC). I'd hate to lose 2 ckts if I had a small arc fault.
I would never wire it that way either but in some cases you may be stuck with an existing multiwire branch circuit. Now with the afci receptacles the dp afci may not be as necessary as most contractors don't pull multiwire branch circuit in homes any more.
 
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