CodeJackal is right on the money with that one, I know I learned it the hard way! If you do have a category B or C connecting butt joint, Tom Barsh's post is the one to follow, it is completely accurate.
The E value rules in Section VIII are quite confusing. I have many new Code certificate holders that buy the software package, go to a seminar, and procdeed to use the wrong E value time after time. Section VIII Appendix L examples are helpful here, as always.
