Fellow G-Scale Folks, I'm a neophyte who aspires to build the G-Scale "Penobscot and Pee Dee Railway" in my back yard. The ultimate dream/goal will have 800' or so of roadbed, a tunnel, a waterfall and suspension bridge, DCC radio control, a dozen (or more) automated turnouts (I used to call them "switches"), and assorted other bells and whistles. I spent the winter reading books and articles to the point where my head is full of disassociated facts--and a multitude of questions. I concluded that I could either return to MIT for a PhD--or "just do it", as Nike advises, and ask questions of those who've "been there, done that". I chose the latter and here's my first tap of your experience: From my reading, I've concluded that I must have several power blocks as well as several polarity reversing sections. I believe that I should feed the associated aux power stations and polarity reversing modules with an UF 10/2 w/gnd cable. The ground is a tough dig (roots and clay) so I plan to overdig the roadway and chase this cable in the bottom. Where it makes connection with a module, I plan to lay a concrete base for the module (in the floor plan of a future scale structure) and pass the cable thru PVC conduit into a weatherproof junction box. So far, so good, methinks--unless you have a caution or alternative to pass on. But I'm not as sanguine about the power buses from the modules to the rails. UF cable (as above) would be almost impossible to use: I'd have to violate the insulation every 3' to 4' to tap it for jumpers to connect the rails. Instead, I plan to use two single insulated wires (I'm confused as to the gauge--one pamphlet has 8 gauge! while another has 18). I'm reasonably handy and patient, so believe that I can make the taps waterproof. Logically (if I get the correct gauge), this will work; the question is for how long? Can anyone recommend a better sheath than normal PVC that would have better longevity? Can anyone recommend a better approach? Pleasent weather here. But, since November when I arrived, we've had three real soakers of several inches each. The proposed roadway is on a bit of a rise, so it drains. But when she's wet, she' wet. Thank you for your time, Malcolm Stewart PS "Penobscot" is a Maine river that I grew up beside; "Pee Dee" is the name of a South Carolina river that runs by Florence, where I now live.