I'm running a sub panel to my garage 50 amp's. My compressor runs at 15 amps 220, welder around 30 amps 220 and probably around 6 110 outlets. The run from my houses panel to garage is around 70 feet do you think 6-3 wire is a heavy enough gauge to do the job. I won't be running the compressor and welder at the same time.
At the top of this page you will see a search function. Here, using the correct search keywords you will find all the answers to all your questions. This is by far the most frequently question asked on this forum. There are tons of archived instructions and suggestions from licensed electricians. Use the search function. There is no reason to re-invent the wheel.