... size) Gauge BWG (wire diameter)1"X1" 14, 15, 16, 17, 182"X2" ' 10, 11, 12, 13, 14, ... 15, 16, 17 3"X3" 10, 11, 12, 13, 14 4"X4 ... 1"X2" ' 14, 15, 16, 17, 18 2"X1" 14, 15, 16, 17, 18 3/4"X3/4" 16, 17, 18, 19, 20, 21 1/ ... 2"X1/2" 18, 19, 20, 21, ... 22 1/2"X1' 16, 17, 18, 19, 1/4"X1/4" 23 ...