by WoodSmith » Fri Aug 15, 2014 12:49 pm
I'm not sure what kind of advice you are looking for. Are you looking for advice on how to get wires from point A to Point B? It's kind of up to you in how you choose to do it. Some of the choices will be limited by how your trailer is built, how you plan to finish it off, and what kind of look you are going for. If the wall studs are C channels, you might be able to use them for wire runs, but not if they have sharp pointy screws or rivet heads popping into them every 12 inches.
If you are going to do all the wiring ahead of time and are certain you know where everything needs to go, putting it inside the walls is the way to go. Be sure to protect the wire anyplace it passes through metal, and at least fasten it frequently with wire ties, but better would be to put it inside a conduit. Putting wiremold on the surface of the walls will allow access to the wires without having to remove wall panels, but then you have wiremold on the walls. (I don't like the look, but I'll probably never be inside your trailer!) Heck, you could put EMT (Electrical Metal Tubing) on the walls if you want to.
Another alternative is to have all the wires running front to back in a raceway covered by a piece of crown molding. Wires may then drop out of the crown into a wall mounted cabinet where the device you want to power lives. Or behind the wall panel.
Start by figuring out where in the trailer the service is going to locate. Most RV's have the service entrance on the drivers side, do you want it on the tongue or on the wall? In front or behind the axle? Then take some pictures of the inside of the trailer and post them with specific questions.
Glen