I have ordered a Tesla for delivery in January and am wondering how to charge it when at home. Tesla tell me that most of their customers buy the Tesla Wall Connector for £438 and according to Home charging installation that will charge at a rate of 7.4 kW or 22 mph. But the car comes with a 6 metre Tesla Mobile Connector cable and when used with a blue connector that can also charge at a rate of 7.4 kW or 22 mph. So what's the advantage of a wall connector (Tesla or other) ? Why not just get a blue industrial socket to hook up with my single phase supply and save me £400 ?