One quick question, off topic, but concerning electricity. My sister's window air conditioner is a 110-120 volt 3 prong plug that I've recently installed a 3 wire receptacle with ground. Before it was just a 2 wire receptacle.
Both before and after I did this, the plug itself gets hot to the touch. What could be causing this? Is it's because it's an old air conditioner? She rents a small apartment and the land owner supplies the air conditioner.