I have the "portable" AV EVSE that plugs into to a NEMA 6-50 outlet, which I installed in my garage. We're thinking about spending some time at my father-in-law's house. He has a NEMA 10-50 outlet in his garage.
I researched the 10-50 and it seems that it's a little strange: two 110V prongs that give you 220V when combined, and a neutral. The 6-50, however, has a hot, neutral, and ground.
What I'm wondering is this: Is it possible to make an adapter from 6-50 to 10-50 so I can use my charger there? There'll be no real ground, so will my EVSE get mad and not actually work?
If it's not possible, we could use 110V charging, BUT his house has no ground. There are a couple outlets that have ground holes in them, but it's not connected to anything. How carefully does the 110V EVSE check the grounding? Will it not function without a true ground? Can I fake it out somehow?
[EDIT: Mine is 6-50, not 5-50]