I added a bunch of telephone poles to the layout in Proviso, Clinton and Fulton. Wires were also added using EZ Lines from Berkshire Junction. I used the .003 charcoal line which scales out to 1/2 inch wire. I figured that was pretty close to most common telephone line. I've got to say .003 inches is really, really small. I had no difficulty working with it as it installed in a snap using fast setting CA glue. But once installed, its pretty difficult to see from normal view distances. Depending on the background, some lines were easier to see than others. And as you can see from the photos they don't show up much at all.
So, I am considering moving up to .006 which would scale out to 1 inch wire.