Using the Delta Netowrk from this image: http://www.belden.com/images/B23_WyevsDelta.jpg Between Y-X, there should be 120V. Between Y-Z, there should be 120V. Between X-Z, there should be 120V. But wait! If we assign values to make the above statements true... Call X = 0V, and Y = 120V, so from Y-X is 120V. If Y-Z should be 120V, and Y is already 120V, then Z should be 240V. This is so from Y-Z is 120V. If X-Z should be 120V, and Z is 240V, then X should be 360V. But that can't be, since we already said X is 0V to make Y-X = 120V. From what I know, if X is held to be 0V and Z is 240V, then from Z-X is 240V! If X is made to be 360V, then Y-Z is no longer 120V! What am I doing wrong?