As a part of renovating my garage this fall, much of the wiring is being re-done. Since doing the work before putting up walls will be much easier now than adding circuits in the future, I'd like to run two circuits for future "big" tools.
The first is a welder- I'm very interested in learning how to weld, and will likely buy a welder in the next 1-2 years. I have heard that most of the quality welders are 220-230 volt devices, and use anywhere from 30-60 amps. If you were renovating a garage, and wanted to put in a circuit for a future welder, what amperage branch circuit would you run?
Second- in the next few months I'll be investing in a good air compressor. Currently I have a little 1-gallon pancake style compressor. In the garage, I'd ideally like something that could drive a set of pneumatic tools, be used to inflate tires, etc. I know compressors come in size from tiny, to ginormous. What size compressor (and corresponding branch circuit) would you recommend planning for?