I am going to be running 100A to my garage from my 200A house service. The whole house and garage used to run on 60A, so I figure I can spare some to the garage as needed. My problem is, the garage is ~50 feet away from my house. I figure I will need about 75 feet of wire. What size should I run so as to not lose half of it on the way to the garage? I have a few welders and an air compressor that need 220V out there. I plan on putting in a double pole 100A breaker in my existing panel and then running it to a 100A panel in the garage.