Siemens Two Pole AFCI Circuit Breaker

[brantmacga]

Do you have specs on the Siemens that I can look at? I called tech support a few years ago with Sq. D and they told me and sent information saying Sq. D would not work on 208 volts.

That's interesting. I've had to install both Eaton and Square D 120/240 rated GFI breakers on 208v pools, and both manufacturers told me they work. I wonder what's different in the AFCI's?


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[peter d]

That's interesting. I've had to install both Eaton and Square D 120/240 rated GFI breakers on 208v pools, and both manufacturers told me they work. I wonder what's different in the AFCI's?

More complicated circuitry in an AFCI, so they made it to run on one voltage only.

 

[bsmith8691]

The neutral connects on one of the two breakers (doesn't matter which one) The conductor from the breaker lands like any other AFCI. Provided you use the handle tie, it works fairly well.

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[MNSparky]

So what do all the apartments that are fed with 3 phases Y services do for afci protection

To answer Dennis's original question, you are SOL in most situations. Better hope it's wired with conduit, an easy fish, or you can make it work with an AFCI device. :rant:

 

[GoldDigger]

But how do you connect the neutral of a MWBC?

Since that GE breaker does not include any GF detection, you just connect the common neutral to one of the two breakers.

http://structuretech1.com/wp-content/uploads/2016/02/DET-719-CAFCI-Shared-Neutral-Guide.pdf