In the course of adding some flooring and new insulation to the attic space of our 1908 home, I did enough reading to know that the knob & tube covered by 12" of insulation would NOT be a good idea. I decided to take it upon myself to replace the K&T with romex for the lights and outlets upstairs. I traced the power supply (14-3 branched off 2 15A breakers) from the basement to a sub-panel (via the attic) in the closet of one of the rooms upstairs that was previously used to house the K&T. I replaced the trunk of the K&T from the subpanel to the lights and outlets upstairs. I have enerything hooked back up, but the branch off the black wire of the incoming 14-3 is not working. However, there is power to that trunk (I shocked myself while installing a ceiling fan that does not work. When I plug in a wiring indicator to a GFCI in the bathroom on that trunk, it reads that the hot & ground are reversed. However, nothing works when plugged into it. I am totally stumped.