Bare Copper Conductors STANDARDS
National : Factory standard
DESCRIPTION
ASTM B-3 Soft or Annealed Copper Wire. ASTM B-3 Specification details the requirements for solid wires and the individual wires in stranded conductors.
ASTM B-8 Concentric - Lay - Stranded Copper Conductors
Solid or stranded 100% conductivity copper conductors.
APPLICATION
Used for bonding and grounding electrical circuits and systems.
| SOFT DRAWN BARE COPPER | ||||||
| Size AWG or kcmil | Nominal Diameter | Approximate Conductor Weight | Nominal D.C. Resistance @ 25°C | |||
| mm | in | kg/km | lbs/kft | Ω/km | Ω/kft | |
| 14 (1) | 1.63 | 0.064 | 18.5 | 12.4 | 8.44 | 2.57 |
| 12 (1) | 2.05 | 0.081 | 29.4 | 19.8 | 5.31 | 1.62 |
| 10 (1) | 2.59 | 0.102 | 46.8 | 31.4 | 3.34 | 1.02 |
| 8 (7) | 3.61 | 0.142 | 75.9 | 51 | 2.14 | 0.653 |
| 6 (7) | 4.55 | 0.179 | 121 | 81.1 | 1.35 | 0.411 |
| 4 (7) | 5.72 | 0.225 | 192 | 129 | 0.848 | 0.258 |
| 2 (7) | 7.19 | 0.283 | 305 | 205 | 0.533 | 0.163 |
| 1 (19) | 7.95 | 0.313 | 385 | 258 | 0.423 | 0.129 |
| 1/0 (19) | 8.94 | 0.352 | 485 | 325 | 0.335 | 0.102 |
| 2/0 (19) | 10.03 | 0.395 | 611 | 410 | 0.266 | 0.081 |
| 3/0 (19) | 11.25 | 0.443 | 771 | 518 | 0.211 | 0.064 |
| 4/0 (19) | 12.65 | 0.498 | 972 | 653 | 0.167 | 0.051 |
| 250 (37) | 13.77 | 0.542 | 1149 | 772 | 0.142 | 0.043 |
| 300 (37) | 15.09 | 0.594 | 1378 | 926 | 0.118 | 0.036 |
| 350 (37) | 16.28 | 0.641 | 1609 | 1081 | 0.101 | 0.031 |
| 400 (37) | 17.4 | 0.685 | 1838 | 1235 | 0.088 | 0.027 |
| 500 (37) | 19.46 | 0.766 | 2298 | 1544 | 0.071 | 0.021 |
| 600 (61) | 21.34 | 0.84 | 2758 | 1853 | 0.059 | 0.018 |
| 750 (61) | 23.85 | 0.939 | 3447 | 2316 | 0.047 | 0.014 |
| 1000 (61) | 28.37 | 1.117 | 4595 | 3088 | 0.035 | 0.011 |
| * ASTM B-3 Specification details the requirements for solid wires and the individual wires in stranded conductors. | ||||||