This  has a polarized plug (one blade is more  than the other). To  the risk of electric shock, this plug is  to fit into a polarized  only one way. If the plug does not fit  into the outlet,  the plug. If it still does not fit, contact a qualified  . Do not attempt to  the plug in any way. If the plug fits loosely into the  outlet or if the  outlet feels  do not use that  .