Conductor Size (AWG or kcmil) Copper Wire Size Aluminum or Copper-Clad Aluminum 15 14(AWG) 12(AWG) 20 12 10 60 10 8 100 8 6 200 6 4 300 4 2 400 3 1 500 2 1/0 600 1 2/0 800 1/0 3/0 1000 2/0 4/0 1200 3/0 250 (kcmil) 1600 4/0 350 2000 250 (kcmil) 400 2500...