I am wrapping up my project, trying to get power to my detached garage.I have layed 2 inch pvc conduit from each building. I had to reduce down to 1 1/4 for a small section abotu 10 feet long going into the 2x4 wall into the panel in my house.
Anyway, it is roughly a 120 foot run. My question is, should I go with # 3 copper or # 2 copper. This will be feeding a 100 amp sub panel. #
2 is .87 ft and # 3 is .69 foot. I wil have to pull this wire mostly myself.Inspector said 3 # 3 wires with a # 6 ground would work, but would I have any benefit to upsizing to # 2? I have an arc welder and air compressor. But that is it currently. However, I thought some day it might be nice to have an air unit. (Not a window unit, I have no windows!).