I'm not in a position to add a 240V outlet that I can charge from, but my outdoor outlet is 20A, which means I can use a NEMA5-20 cable. I use a long (90') 10/3 outdoor extension cord to reach my car's location, which I've been doing with my existing Prius Prime drawing 12A without issue. That said, there is a bit of a voltage drop - about 7V from my tests (121.5 normal voltage to 114.5V under 12A load last time I tested). Everything I've found so far tells me this isn't enough of a drop to cause the car to reduce its current, so I'm optimistic this will work, without being able to test until the car arrives, of course.
That said, I'd much rather charge at 16A if at all possible, with the NEMA 5-20 adapter. Calculating the expected voltage drop under a 16A load, I'm arriving at (7 / 12) = .583 ohms, and then (16A x .583) = 9.328 volts, resulting in ~112V under load. Will this still be within range for the MY, or will this be too much of a drop to allow for 16A current? And if so, will it drop to 12A, or to a different amperage?
That said, I'd much rather charge at 16A if at all possible, with the NEMA 5-20 adapter. Calculating the expected voltage drop under a 16A load, I'm arriving at (7 / 12) = .583 ohms, and then (16A x .583) = 9.328 volts, resulting in ~112V under load. Will this still be within range for the MY, or will this be too much of a drop to allow for 16A current? And if so, will it drop to 12A, or to a different amperage?