If you have 220, use 220. Motors tend to last longer and start easier. The startup current is split between "two legs". It just does better, without getting into too much electrical theory. If you have the outlets, i suggest it highly.
If you can be safe with hpa, you can be safe with electricity. If theres no clothes dryer or anything that needs it as is, you could retrofit the outlet or retrofit the cord on the compressor. It's 3 or 4 contact screws to do either and it's dead simple and I bet you can get it the way you need.
I used to live somewhere where the only access to 220 was a dryer outlet, and I needed to occasionally use my welder with it (at less than max power, obviously). I simply bought a replacement dryer cord and put the correct outlet on the connection end of it and was good to go. If you are stuck with one kind of outlet, you could always make a similar adaptor cord . . . .
This is true. I use nema 650 to something sketchy for my welder too. I just made a short adapter cord. I don't know what the electrical prowess of those here is, or a Esa to parts
If buying a bigger compressor and it's rated at 2.2kw and you do the ohms law calculation on it it will seem fine. Mine (tuxing rated at 2. 2kw)has such high locked rotor amp draw that a 30a 115 circuit won't run it.
