ECN Forum Forums General Topics of the Trade General Discussion Area 480 or 460 volt secondary ?

NEMA standards ask that motors operate at + or - 10% of the Nameplate voltage.
Transformers have a variety of places where you may connect the wires, to "adjust" the voltage to what you want. It is well within the range of these 'taps' to set them at 460- just ask the guy to do it when he hooks it up.