As we start on the wall insulation, it is time to think about wiring. We are working on a wiring diagram using the CAD model, with placement for 120V and 12V outlets and fixed hookups (lights, waterpump, furnace fan, vents, fridge, etc.)
I am not sure what the regular camper manufacturers use for 12V wiring, but I decided to lean on my experience with sailboats and go with Ancor marine grade flat two conductor 14 AWG wire for most of the 12V runs. This is some good stuff, tinned and meant for harsh environments (like boating!). The conductors are red and yellow. In the marine world, people use yellow for 12VDC ground so as to not accidentally mix with AC hot or neutral. I will follow this "standard" for our camper.
14AWG is fairly beefy for some of the runs, but it seems simpler to just standardize on a wire gauge than to try and size everything for the expected current draw and allowable voltage drop. The 3 way fridge recommends 10 AWG for runs of less than 20 feet, so I am getting a little bit of that too.
I guess for the AC I will just use Romex? Opinions?
