Just wanted to see how someone would handle this situation, we got called to finish a house that was already roughed in and sheetrock was up. After going through it someone had pulled 12/3 homeruns everywhere and the permit is under the 08 code. What to do now to fix the problem of the arc-fault breakers is the question to meet the 08 code.
12/3 homeruns
- Thread starter A.B.C.E
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macmikeman
Senior Member
- Location
- Planet macmikeman
What brand of panel was used? There are some 2 pole ark fault breakers on the market. You might be able to match up if you are lucky, but the price tag multiplier is approx 1.5 times using single pole ark faults.
- Location
- Bremerton, Washington
The Sq D Breaker won't work, it doesn't matter if it was done under the 08 or 02 NEC.
You'll need to repull 12-2 or if you can find it 12-4.
You'll need to repull 12-2 or if you can find it 12-4.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
Or just loose one of the legs and wire the circuits accordingly.
cadpoint
Senior Member
- Location
- Durham, NC
12/4 in a MWBC, per the Code won't that put the OP back to the same situation?
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bobsherwood
Senior Member
- Location
- Dallas TX
Maybe I am confused? Could you not strip the red conductor and both ends and call it 12-2 w/G??
bobsherwood
Senior Member
- Location
- Dallas TX
Proof read!!!!! Grrr.... At both ends i mean.. Sorry.
ultramegabob
Senior Member
- Location
- Indiana
depending on how much load you have on a circuit, couldnt you just tie both the black and red together on one breaker? if its a homeline panel, you could just double land them on the breaker to tie them together.
dcspector
Senior Member
- Location
- Burke, Virginia
What did I miss? Same phase shared grounded conductor? I came in late..sorry.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
Splice at the panel or at the first box where the 3-wire enters, the results are the same.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
dcspector
Senior Member
- Location
- Burke, Virginia
Got it thanks Rob. Like I said I came in late thought I read everything....Not.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
If you can't double up the 3 wire circuits, find a company that makes 2-pole AFCI breakers and change the panel or just install a subpanel with only the AFCI's.
cadpoint
Senior Member
- Location
- Durham, NC
I don't think a AFCI breaker is dual rated and that application would seem to defeat the purpuse ?
electricmanscott
Senior Member
- Location
- Boston, MA
Siemens makes a combo two pole Arc Fault breaker. If you need all of the circuits changing the panel may be your only option.
cadpoint
Senior Member
- Location
- Durham, NC
Eaton and Siemens show up on the search engines as existing, using, "2 pole arc fault breaker".
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
If one is following the 2008 NEC, "Combination Type" AFCIs are required.
I do not believe that any manufacturer has made available to the market a 2-pole AFCI device yet. I have the Seimens paperwork, but the local supply house tells me they are not available here yet.
electricmanscott
Senior Member
- Location
- Boston, MA
That may be true Pierre. My supplier said they have them but I have yet to actually see one with my own eyes.
mikeames
Senior Member
- Location
- Germantown MD
- Occupation
- Teacher - Master Electrician - 2017 NEC
No you cant parallel 12awg conductors, too small. Only 1/0 and larger unless the exception is met and its not in this application.
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