Hi All, I am new to the group and just a DIYer hoping to get some advice. My garage has been wired for my air compressor and the outlet is what appears to be a NEMA 6-20. It is wired to my panel with two 15 amp fuses and is marked 220v by the electrician that wired it years ago. I just purchased a welder that requires a NEMA 6-50P (looks like a typical clothes dryer plug). My question is: can I run a 6-50P outlet by adding it to the existing 6-20 outlet? So in other words I would just add the 6-50 outlet adjacent to the existing 6-20 outlet. Or is this a situation where I just need to have an additional circuit added to accommodate the welder? Probably a reasonably stupid question for this group, but just trying to determine how to go about it, or at least be somewhat knowledgeable if I hire an electrician. Thanks much in advance.