First time I have been on this thread, and have considered a TMCC loco and control system. I suppose my question has been asked/ answered a biziollion times:
How do you ground this system whose house wiring has non-grounded outlets and the cabling is not the metal armored BX cable, just two wire NM. Suppose I could drill a hole in concrete basement floor and drive a ground rod in. 
Then too, to make system work, the best way apparently is adding metal foil ground plane directly below track which would entail ripping up ballasted track.
Suggestions, but at this point just thinking not actively going to get a loco/system now.
