@RickO posted:Imo, every 3' is overkill. I ran a 14 GA buss with 14 GA feeders about every 10' and have consistent voltage across my layout.
Absolutely, i.e. every 3 feet is DEFINITELY overkill, especially if you plan on using MTH DCS control. On our layout, I had power feeders to the center rail about every 8 feet, and then had to cut gaps in the center rail in order make sure that the DCS "signal" didn't "fight itself". Worked out fine.