I think I have a bad charging cable but I don't know for sure. I'm looking for someone near me in Long Beach, California that would be willing to swap 240 Volt UMC's for a day. Anyone up for it? I got the car in November and the cable worked fine for the first couple of weeks. After that, it would quit charging after an hour or two while charging at 40 or 32 amps. It worked for a couple more weeks at 24 amps before it started kicking off again. Now it works at 16 amps, (and I assume 12). I took it to Tesla in Costa Mesa and they said there were some flucuations in voltage during the charging process based on my logs. They suggested I have an electrician look at my system, but they thought the problem was probably with the cable. They did not have a spare cable to loan me to test at home. So, if there is anyone out there that can help me out, I would REALLY appreciate it.