I am building an unattached workshop in my backyard. I am planning on running my electrical off of my house's panel. I am going to install an auxuillary panel in the workshop (100 Amp). I'm planning on two 15 Amp circuits for outlets, One 220V circuit, and 1 circuit for lighting. The distance between the house and the shop will be about a 40' run.
I know I'll have to have an electrician come out and finish the work, but I want to purchase the correct size wire when I purchase my building materials.