Rowdy, after ribbing you, at least I should ask some serious questions:
What would the figures over time be for savings due to the over-sized conductors preventing losses due to resistance heating (I-squared times R) as compared to a "cheap" system?
The ads for copper point to turn-around times of a few years for copper Xformers versus Al, any similar savings here?
4160/7200V Wye: just a typical medium voltage system that is fed to some larger factories, and composes most of the power distribution systems in my area. I probably could've cited a better example, and I'm sure I said something to give Bjarney a chuckle! He's the real deal when it comes to medium and high voltages...