COMMON WIRE CONDUCTOR STRANDING Stranding Class 14-2 AWG 1-4/0 AWG 250 MCM - 500 MCM B 7 STR 19 STR 37 STR C 19 STR 37 STR 61 STR D 37 STR 61 STR 91 STR G 49 STR 133 STR 259 STR H 133 STR 259 STR 427 STR I All Sizes use 24 AWG Wires K All Sizes use 30 AWG Wires M All Sizes use 34 AWG Wires