an electrical engineer told me (I'm a fourth year apprentice)that we get more amps per circular mil area with two smaller conductors than one larger conductor each have the same total circular mil area due to heat disapation. in short, the parallel setup, dissapates heat better. But then my forman says that the only reason we do it is for pulling reasons. But if that was true wouldnt you get get bigger pipe/ box etc. Who is correct or more correct?