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Outlet/plug seems pretty moosey; electrician charged me plenty, and we had to wait for the 50 amp breaker because he wanted better than Home Depot stuff. He says that wire gauge is plenty and connections are tight. Plug end of mobile connecter is firmly in. I don't know about the ground, what...

Home charger only.

I agree. Electrician says wire gauge is plenty large; 50 amp breaker does not help. Now suspecting a problem with the Tesla (UMC?) cable.

Electrician states that wire gauge is plenty big. But you are right, 50 amp breaker does not help. Now suspecting a problem with the cable.

Thanks. Electrician came out, said tha circuit breaker was shot, will replace current 40 amp breaker with a 50 amp GFi when available. Meanwhile, he suggested that setting charging current to 32 amps is marginal for a 40 amp breaker.

I have a 2020 Model 3. I charge it using an electricin-installed NEMA plug on a 40 amp breaker and the Tesla UMC. I set the charging current to 32 amps. It starts charging fine, then after about 1 1/2 hours the current drops down to 7 amps. I unplug, set the current down to maybe 28 amps...