No. Solid wire is not recommended in vehicles. Most manufacturers use it because it’s cheap and easy, the same reason they use fiberglass insulation.Question relating to all the above. Is everyone using a "romex" sheathed cable? Wondered if running a flexible conduit is ever considered and running "single" unsheathed wires? Much easier to pull ,if you want to change out / add circuits later. cheers
Most people run stranded single cable for both the ground and power supply.