This article was posted 08/15/2012 and is most likely outdated.

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Applying 1-pole Combination AFCIs to Shared Neutral Circuits

Combination Arc Fault Circuit Interrupters
Application Guidelines
Applying 1-pole Combination AFCIs to Shared Neutral Circuits

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Until now, using a shared neutral (multiwire branch circuits) on arc fault protection circuits required the use of 2-pole AFCI breakers, since the AFCI circuitry uses a ground fault CT to help it detect arcs. But with GE’s newly developed combination AFCI technology, no ground fault CT is required, so shared neutral circuits can be used with two 1-pole AFCIs connected together with a handle tie.

Click here to view this Electrical Distribution publication from GE which explains these application guidelines and provides example diagrams.

 

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Comments

  • It will be interesting to see a response from GE on whether their new AFCI (w/no CT) can be listed as a Slash Rated breaker. I personally see no reason to specify two single poles with a handle tie, but we all know there are times when you have a need for a two-pole source and you only have two single pole CB's that happen to be slash rated, so you can utilize this approach. Good article!

    Richard Hairston  October 17 2012, 4:39 pm EDT
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