Forward thinking on wiring. I'll be using Fastrack and wiring the layout (8x16) for two main loops powered by an MTH Z4000. Lionel recommends 16 gauge wire for bus lines whereas I see many other resources recommending 14 gauge. I understand that due to it's larger size, 14 may carry a somewhat heavier load than 16, but in a layout of this size, does it make much of a difference? What are the pros/cons of each? Thanks. PS FWIW, my collection of motive power is a mix of LionChief and conventionally operated engines. I have no plans to add any other CC systems. I prefer the traditional O gauge equipment over scale. Thanks again.