I was lying in bed thinking about wire prices and trying to figure out how Romex is manufactured (I know, I need a life). I know the copper is formed by drawing it thru dies, and I assume it is drawn thru the insulating material which must be in a liquid state, but I can't figure out how the individual conductors are packed so neatly into the jacket and at a cost effective method. I did a search and came up with nothing.
Maybe someone has been in a Romex manufacturing plant?