"Ok LK, thats fair as long as I get to submit pictures of cooked other types of wirenuts I have found on copper connections."
Your right, it's the connecton be it copper or Al, both have problems, what we have found is the purple nut, just dosem't cut it, so far i have not seen many cu to al connections made up with a 3m connector fail, My thought is the connection was not made up correct on these failures.
