Breaker 1-9, what's your 10-20?

Ever had something that just didn't make sense and that you couldn't let alone? We have two of those things, both electrical in nature.

Ed, our electrician, has worked his way through most of our electrical panel. He reclaimed the old 30A electric wall oven circuit, the old 30A electric cooktop circuit, and the old 40A A/C circuits and re-purposed them so that we'd have new circuits for the kitchen. He mapped the other circuits to what they controlled, but there was one circuit that he was not able to trace. Circuit 19.

Since the utility room is gutted, Ed tagged the wire for us yesterday after tracing it from the panel, so that we can see where it begins heading north in the attic. We work a lot cheaper than he does, especially on wild goose chases.

We traced that wire this morning into a wall in the kitchen (where we know it services nothing). There was a wire coming back up that wall cavity, so we guessed it was the same wire, continuing its mysterious journey. We found that it led to the formal dining room. We left the attic and headed for that area. Sure enough, 3 lone receptacles in the dining room were without power. That's bizarre, an entire 20A circuit to service 3 seldom-used receptacles...in a seldom-used room!

But, that may mean that we have a circuit available to tap into for exterior receptacles. We need one on the west side of the house (or northwest eave) and that's exactly where that line runs.

Now, to the second puzzle. There is an existing, seemingly original, exterior outlet on the north side of the master bedroom (northeast side of the house). It has wire coming into the receptacle and leaving the receptacle...but no power. Digging around in the attic yielded no clues - no wire seems to be going to it from the attic, which would lead you to believe that it would be connected via the two indoor receptacles on either side of that window, with the wires running through the wall. I've never wanted to cut into a perfectly good wall so much in my life. Not knowing why that receptacle doesn't have power is infuriating!

We have contemplated that maybe it should be wired from the exterior light, so I want to turn off that breaker and pull that lamp off the wall and see whether there is wire leading away from it that is no longer connected. Yes, I'm grasping at straws. The deal is, if we can't find where it should be powered from, we're going to have to install new receptacles someplace else where we can get wire to them without cutting into the interior walls (and keeping it under the window would necessitate cutting into the interior wall).

One mystery down, one yet to go....