Reposting,, I'm new and posted original post on wrong thread.
Currently running 350' of 12 gauge extension cords to camper. Most everything is 12v but we do run the microwave and coffee pot occasionally. I know we're pushing the load on the wire and plan to do one of two options. Go with 10ga (aluminum) underground to trailer or maybe move to a better site but that pushes the length out to 450'. Will the 10ga be enough for either application?