czars
Czars
- Location
- West Melbourne, FL
- Occupation
- Florida Certified Electrical Contractor
Does anyone have a handle on which manufacturers, if any, sell AFCI breakers that may be used on MWBCs?
AFCI on MWBC
- Thread starter czars
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petersonra
Senior Member
- Location
- Northern illinois
- Occupation
- engineer
can an afci be used on a MWBC at all?
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
No theoretical reason why not. The arc signature will be the same.
If the breaker includes GFP, then the neutral must run through the two pole breaker, just like for a GFCI breaker.
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If the breaker includes GFP, then the neutral must run through the two pole breaker, just like for a GFCI breaker.
Sent from my XT1080 using Tapatalk
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
GE uses 2 sp afci breakers with handle ties. I believe CH also makes a dp afci. Here is how ge does it.
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
I just verified that Cutler Hammer makes one-- part # CH215CAF or CH220CAF
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
If I recall correctly, the GE AFCI breakers are the ones which do not include any ground fault sensing. Makes a difference!
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
Yes that's true but CH does include afci and they have them- unless they took it out of the dp afci units
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
BTW every manufacturer makes a dp gfci breaker so......
- Location
- Placerville, CA, USA
- Occupation
- Retired PV System Designer
That is why you have to use a dp unit for those types instead of just handle tie.....
- Location
- Chapel Hill, NC
- Occupation
- Retired Electrical Contractor
That is correct-- I thought you were thinking the others didn't have it because of the gfci.
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