Thanks for responding.

While trying to find out more about the potential use of AFCI with Aluminum wire I found the article at the attached link. Not only is it a good argument for expanded use of AFCI. It also has several clear and concise definitions of electrical problems.

http://www.mikeholt.com/documents/mi...terrupters.pdf

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The only reason some people get lost in thought is because it's unfamiliar territory.
- Paul Fix