From your description, it sounds like its a 20 amp, 240 volt receptacle (which uses both poles), so you could not plug in a 120 volt refrigerator.

However, it also seems you have limited understanding of electrical terms and wiring, so I suggest getting an electrician or other experienced person involved.

Bruce

If the outlet has a 240 volt receptacle, the prong arrangement on your 120 volt plug wouldn't fit. They are made this way so that the mistake you are trying to make can't be done!