Type A is for Solid Wire (mm: 0.5/1.2/1.6/2.0) (AWG: 24/16/14/12)
Type B is for Solid Wire (mm: 1.0/1.6/2.0/2.6/3.2) (AWG: 18/14/12/10/8)
Type C is for IV Cable (mmsq: 1.25/2.0/3.5/5.5/8.0) (AWG: 16/14/12/10/8)
Type D is for Stranded Wire (mmsq: 0.9/1.25/2.0/3.5/5.5) (AWG: 17/16/14/12/10)