My detached garage has a 1 bed/1bath and a garage and has a sub panel in it. There are two, 220v circuits, one with a 30amp double pole breaker and a 20 amp double pole breaker. In the garage is laundry and there is a 30amp electrical for a dryer that's not used so we can assume that's that. The box is full in space otherwise and I'd like to add an additional 20 amp 120v circuit for a small AC. Anyone have any ticks to finding where the wire ends up? Leaving it off hasn't seemed to have any effects on anything at all. I could just disconnect it and cap off the wires but it would be nice to know. The rooms and roof and walls of the garage are all finished in as well including up in the eaves so it leaves some to the imagination. I have a toner for cat5, I wonder if i could cut off some bare ends and put on the disconnected wires at the panel? Not sure it would be strong enough thru the wall and any conduit to be worth the effort. I have a non contact voltage detector that senses power on the breaker but couldn't trace it out beyond the edge of the panel.