I noticed that our stainless steel refrigerator door makes a high pitched feedback sound when I touch it.
Investigating further, I found that the previous owner of the home (who left the fridge) removed the grounding prong from the outlet.
I measured the AC voltage between the door and a nearby grounded outlet and found a voltage of 24v. What's happening here, and is it dangerous?
Answers to questions in comments
The door has a dispenser in it. I cannot tell if it is the door or the person making the noise- it seems to originate from the point of contact and is louder when a better "connection" is made (whole hand vs finger)
The 24v I am measuring is AC. Turns out it is 24 when the fridge is running and 3v while holding temp. The rest of the house is grounded, at least I can test an outlet and get voltage difference between hot and ground.
The PO broke the pin off the plug- the socket in the wall is functional.