Most residential mains is 240v on two legs that gets divided to 120v outlets. However, major appliances like dryer/HVAC will use the 240v. I had a 240v outlet a

Most residential mains is 240v on two legs that gets divided to 120v outlets. However, major appliances like dryer/HVAC will use the 240v. I had a 240v outlet added to my garage for larger equipment. It is absolutely possible to add a 240v charger at single family homes with a visit from an electrician. The US standard of 120v is not an issue.