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When I plug in my car, I see an initial voltage of 240V at 0A, when the charge current climbs to 16A, it drops to 233V. That is a drop of 7 V, That means there is a resistance of 0.44 ohm. I know from this table(American wire gauge - Wikipedia, the free encyclopedia), #10 AWG has a...

Did anyone notice the tendency from some contractors to over charge after it is known that the customer is a Tesla owner ? I knew one business owner who was quoting a $80 for a visit 6 month ago, now he is charging 200. I can not help but making this connection. Maybe I should just say I...

I have a subpanel in the garage. it is powered by 4 #10 gauge wires from main panel. The distance is about 80 feet. The breaker size is 30 A from the main. Two questions: 1: Is installing a 30 A capable socket (like 6-30 or 14-30) on a subpanel with 30A breaker from main violating any...