| As a new Model 3 owner, I've been looking into how to do this. The solutions aren't particularly nice, there's the Quick220, a device which does all the safety checks of manually combining 2 circuits on opposite phases so you can actually get 12A at 240V. But it requires 2 circuits on opposite phases, neither with GFCI (which most outdoor outlets have). Second option is a NEMA14-50 extension cable, which obviously carries it's own risks but if there's a dryer outlet on a 30A breaker, that gets you 24A at 240V. But yes, either solution requires a bunch of bulky cords running out the door, and the assumption that the houses' electrical wiring was done properly and is in good condition. So far the only less-invasive alternative is hoping they have a 20A circuit somewhere convenient, rather than just the kitchen plugs, then you can get an extra 33% charging speed (16A @ 120V) with the proper 5-20 adapter. I think the more practical solution will be private plug-sharing, there's already a few apps and startups advertising I can earn money by allowing others to book my home charger, and a proper home install can do 11kw. |