Would something Like this work? I have a 10-30 outlet for my dryer (that I also used to charge my Tesla). Been looking for a solution to plug my XC90 into that outlet and your post answered my questionIn case you have a NEMA 14-50 receptacle (e.g. Tesla), the adapter for 6-20 is $30: https://www.amazon.com/dp/B07H5HKFMW/