in Inches

Wire Size Wires per Terminal (AWG or kcmil) 1 2 3 4 or More 14-10 Not Specified - - - 8 1½ - - - 6 2 - - - 4 3 - - - 3 3 - - - 2 3½ - - - 1 4½ - - - 1/0 5½ 5½ 7 - 2/0 6 6 7½ - 3/0 6½ (1/2) 6½ (1/2) 8 4/0 7 (1) 7½ (1½) 8½ (1/2) - 250 8½ (2) 8½ (2) 9 (1) 10 300 10 (3) 10 (2) 11 (1) 12 350 12 (3) 12 (3) 13 (3) 14 (2) 400 13 (3) 13 (3) 14 (3) 15 (3) 500 14 (3) 14 (3) 15 (3) 16 (3) 600 15 (3) 16 (3) 18 (3) 19 (3) 700 16 (3) 18 (3) 20 (3) 22 (3) 750 17 (3) 19 (3) 22 (3) 24 (3) 800 18 20 22 24 900 19 22 24 24 1000 20 - - - 1250 22 - - - 1500 24 - - - 1750 24 - - - 2000 24 - - - For SI units: one inch = 25.4 millimeters. Bending space at terminals shall be measured in a straight line from the end of the lug or wire connector in a direction perpendicular to the enclosure wall. For removable and lay-in wire terminals intended for only one wire, bending space shall be permitted to be reduced by the number of inches shown in parentheses. 373-9. Side or Back Wiring Spaces or Gutters. Cabinets and cutout boxes shall be provided with back wiring spaces, gutters, or wiring compartments as required by Section 373-11(c) and (d). B. Construction Specifications 373-10. Material. Cabinets and cutout boxes shall comply with (a) through (c) below. (a) Metal Cabinets and Cutout Boxes. Metal cabinets and cutout boxes shall be protected both inside and outside against corrosion.