When I charge my car away from home, sometimes I use the portable 120 volt charge cable that plugs into a normal outlet. At work, we have receptacles mounted a few feet above ground. The charge cable comes stowed and wrapped around a handy coiling device which also lights up during charging. This device hangs directly down when the unit is plugged in, and depending on how much cable I need to unwind to reach the car, weighs around 2-5 pounds.
The question is, is it safe or harmful to hang this mass from the plug? It was designed to work that way, so I have a hard time believing it poses a danger to the receptacle or the cord/plug itself. There is a debate among my fellow electric car drivers about this. Two of the receptacles recently burned out, so they are attributing it to this, and are insisting we all find a way to support the weight of our chargers elsewhere than from the plug.