Thanks gfretwell for the explanations...they are helpful...I've always been inherently curious about the inner workings of things. I think the idea of AFCIs is a good one, but they need to work on the actual implementation. I do agree with the overall theme of this topic though, I hate seeing the NEC become more about selling products than safety. I mean if a new product actually helps by all means require it, but it seems there was little research to show these do their job. Let products get recommended by their own merit...not by some marketing department.
