http://www.oster.com/manuals/.../2503.pdf
This hand mixer is intended for household use only. NOTE: This ap liance has a polarized plug one blade is wider than the b other). T o reduce the risk of shock, t is plug is intended to fit in a polarized outlet only one way. If the lug does not fit in the outlet, reverse the plu . If It still does not fi P contact a qualified , electriclan. Do not attempt 7 o defeat this safety feature: