For the first time, I have encountered a problem using a J1772 charging station. Here are the pertinent facts: 1. Semaconnect provides services to a building where I often park. I have a Semaconnect account and the iPhone app so I have access to the chargers. There are two chargers at the facility and have encountered the same error with each of them. 2. The charger that Semaconnect provides is a ChargePro station. The specifications are located here: Tech Specs 3. The charger is configured for 208V and 30 amps. My car seems to recognize this fact. 4. When I plug into either charger, within a few seconds the charging stops and the ChargePro unit indicates that it has encountered a "Ground Fault" error and to "Check Connection". There is also a long error code: AAAjAQAABAFAAAA. 5. Semaconnect and the building have tried to troubleshoot it, but it still returns the same error. 5. Here's the even more frustrating/puzzling part. Semaconnect operates another charging location nearby with the same ChargePro unit, and my car charges there without any trouble. 6. In addition, the building informs me that someone else with a Model S used one of the charging units for six hours the other day and did not encounter any errors. Apparently, no else besides the one Model S has used it. 7. I plan on calling Tesla, but I figured somebody here undoubtedly knows more about this problem than Tesla does. I also note that this issue came up with the Roadsters some years ago, but I haven't found a recent issue with a Model S. Any help would be greatly appreciated. Thanks!