Hello, I’m having trouble determining the issue that I’m having in my garage. I have several shop lights, 110v air compressor, and a ammco 110v brake lathe. When everything is running At the same time, the double poll 60 amp breaker in my basement which is 65 feet away from my garage keeps tripping. It’s 6 gauge wire connecting the garage to the house. Why is it blowing the breaker in my basement, shouldn’t it be blowing at the sub panel in the garage? There are 3 breakers in the sub panel. All the breakers are 15 amp. compressor goes to one, lathe goes to the other, and the shop lights and outlets on the others. I’ve already tested the double breaker in the basement and I have a total of 240v between both, and 110v tested individually. All outlets in the garage have been checked for correctness with a circuit tester. All fine. Any ideas of what direction I need to go in next?