what do you mean you cant install an arc fault breaker on a mutli wire circuit? I have done it numerous times. CH make a 2 pole independent trip arc fault breaker specifically designed for 3 wire homeruns. I think that you should reconsider who you are buying your panels from untill they become more knowledgeable about what is available out there. There is a substantial cost savings with the price of copper nowadays to use these 2 pole arc faults. Of course if you are using GE panels they arent available. I used to use GE Panels for everything untill i started have 4 out of every 10 arc fault breakers being defective. Since i have switched to CH i have installed roughly 65 Arc faults and only had one bad one. I will never switch back to GE.
Scott
