[sdiy] iec connector confusion

[Dave Manley]

harrybissell at wowway.com wrote:

> (I use "balanced power" with a special tapped transformer that truly gives +/-
> 60 volts with respect to ground. GOD help you if you mix wires from the
> standard 120V system and the balanced one... :^)
> 
> H^) harry

So what's the straight dope on using balanced power.  Since you are 
doing it I assume there are real advantages and it is not just snake oil.

-Dave