Hairdryers are not on for 8 hours continuously. 1500 watts all night for full 8 hours is and extra 360 kilowatt hours a month just by itself, now multiply that by 2 cars times the neighborhood size, and that little neighborhood transformer never cools down overnight.
Residential transformer sizing hasn’t accounted for an added electrical vehicle load during a peak draw season. See ANSI standards based tables:
https://www.electricities.com/Libraries/Training/Transformer_Sizing_Handout.sflb.ashx
“Hairdryers are not on for 8 hours continuously. 1500 watts all night for full 8 hours is and extra 360 kilowatt hours a month just by itself, now multiply that by 2 cars times the neighborhood size, and that little neighborhood transformer never cools down overnight.”
Transformers are designed for peak load. AC, lights, TVs, stove, hot water heater all going.
Much more than 1500 watts! You go to sleep and all that demand essentially goes away. Much more than 1500 watts.
And it is not all night. Two hours of charging satisfies most commuting needs.
Do the math.