Hi, I recently picked up a model 3 a few weeks back. I installed a NEMA 14-50 outlet in my garage and I have been using the UMC to charge with no trouble. Recently as the weather gets colder my heat pump has been tripping it's breaker. This never happened before and my first thought was that it might have something to do with the Tesla on the NEMA 14-50. Tried removing the UMC for a few days and it stopped happening. I didn't quite understand, so did some Google-ing and turns out that with a voltage slump (brownout) an a/c or heat pump condenser motor can over current causing its breaker to trip. I noticed with the UMC connected voltage is showing around 238v, but when the heat pump is on it drops to around 230v which I guess is enough to cause the heat pump to eventually trip the breaker after a while. My house has 200amp service and overall load should not be a problem. Heat pump is only a 6kw unit and I have a 4.5kw electric hot water tank and these are the only 2 significant loads. What is the solution to this problem? I always like to know what I'm up against before calling out the pros to fix a problem $$$.