I was just killing time watching YouTube clips and came across a couple clips relating to the movement of a HUGE 285 TON anode to a mine in Arizona. Starting at about 9:45 into the clip ( http://www.youtube.com/watch?v=FzBUBguaMk0 ), there appear two poles towards the right that have THE longest droplines extending down from the arm that I've ever seen. One feeds a riser and the other feeds a transformer bank, and I'm 99% sure it's likely going to be 2400 delta.