I have a customer who has a Chevrolet Volt and he was having problems with the charger. Seems that in using it at both home and at work the neutral blade of the male cord end is overheating and burning. He contacted his dealership and they told him to install a 20A 120V receptacle to plug in to. I told him that since it had happened at two separate locations there was a very good chance that the charging unit was defective and not the power source. He was given a new charging unit but is apprehensive about using it since the last one actually burned the cord cap and melted the wall receptacle. The specs I found on the charger are 12amp and 8amp. The home receptacle is a 20A GFCI circuit that I installed new 5 years ago. Has anyone encountered faulty chargers with the Chevrolet Volt? I am going to go back in the A.M, replace the damaged receptacle, and plug in the vehicle and load check the circuit. The dealership told him he needed a 20A receptacle because that's what they use and don't have any problems. To my knowledge the circuit being overloaded was not the problem. The male cord end on the charger is 125V 15Amp 2 pole 3 wire grounding type. Don't see where the 20A receptacle comes into play.