indeed....
Mr. Dini performs an amazing run of interference for UL. The sanctioned widget of the century may well turn out it's edsle.
After reading the article when it came out i contacted UL , asking if AFCI's were listed for ungrounded circuits. This was not a 'if it'll work' question,or 'do you think it's a good idea?' question.
It was a listing question, as it IS or it IS NOT listed for such use.
UL's reply did not resolve this.
