I have a Nema 6-20 outlet in my garage that the previous owner used for a welder. I have a Open EVSE charger that I have used for my PHEV for a few years. First question - what kind of m/hr will I likely get if I'm limited to 20 amps? This will likely be good enough for me, but next question - is there an way to tell if this could be easily upgradeable to a higher amperage? The outlet is only about 10 feet from the breaker box, but there is a window between them. If I could safely replace the breaker and outlet to a higher rated one it would be an easy switch, assuming the wire gauge is adequate.
TIA
TIA