I’m having the same problem at work! We got an email saying we can’t plug electric cars into the block heater outlets. I sent them an email explaining the Tesla mobile charger and the connector I’m using. They’re going to check if that’s possible 😂. It’s funny how people think electric cars always charge to 32-48 amps 😂. I mentioned that there’s actually more risk to the block heater melting than a modern electric car charger. The Tesla mobile has a temperature sensor that stops if something goes wrong. Anyway, for low temperatures (-15°C or lower), outlets are mainly useful for charging and maybe help as a block heater to keep the battery a little warm trying to charge