... . Gal.v. G/SQ.MWidthWire Gauge (Diameter) BWG InchmmTolerance(mm)3/8" 10mm ±1.0 0.7mm - 145 2' - 1M ... 70 2' - 2M 27, 26, 25, 24, 23, 22 3/4" 20mm ±3.0 0.7mm - 55 2' - 2M 25, 24, 23 ... , 22, 21, 20, 19 1" 25mm ±3.0 0.9mm - 55 1' - 2M 25, 24, 23, 22, 21, ... 20, 19, 18 1-1/4" 31mm ±4.0 0.9mm - 40 1' - 2M 23, 22, 21, 20, 19, 18 ... 0 1.0mm - 30 1' - 2M 21, 20, 19, 18 3" 75mm ±8.0 1.4mm - 30 2' - 2M 20, ...