TYPICAL OUTSIDE DIAMETER OF INSULATIONON 600V INDUSTRIAL WIRE THHN, THWN, OR THWN-2 90C / 75C 600 Volt PVC Insulation with Nylon Outer JacketWIRE SIZE / STRANDING Approx. Insulation Outside Diameter AWG / kcmil Strands Dia mm Dia Inches 14 solid 2.6 0.102 12 solid 3.02 0.118 10 solid ...