Tree wire is used for primary and secondary overhead distribution lines that have a potential for contact with trees or other debris.
ANSI/ICEA S-121-733 Tree Wire and Messenger Supported Spacer Cable.
| Voltage | Size | No.of Wires | Conductor Shield Thickness | Inner Layer Thickness | Outer Layer Thickness | Approx.Overall Diameter | Rated Strength | Approx.Weight |
| AWG or kcmil | No. | mm | mm | mm | mm | kN | kg/km | |
| 15kV | 4 | 7 | 0.38 | 1.91 | 1.91 | 14.4 | 3.52 | 204 |
| 15kV | 2 | 7 | 0.38 | 1.91 | 1.91 | 15.8 | 5.39 | 259 |
| 15kV | 1/0 | 7 | 0.38 | 1.91 | 1.91 | 17.7 | 7.96 | 341 |
| 15kV | 2/0 | 7 | 0.38 | 1.91 | 1.91 | 18.6 | 9.99 | 394 |
| 15kV | 3/0 | 7 | 0.38 | 1.91 | 1.91 | 19.7 | 12.15 | 459 |
| 15kV | 4/0 | 7 | 0.38 | 1.91 | 1.91 | 21.1 | 15.30 | 541 |
| 15kV | 266.8 | 19 | 0.38 | 1.91 | 1.91 | 23.0 | 19.89 | 648 |
| 15kV | 336.4 | 19 | 0.38 | 1.91 | 1.91 | 24.9 | 24.57 | 775 |
| 15kV | 397.5 | 19 | 0.38 | 1.91 | 1.91 | 26.1 | 28.44 | 878 |
| 15kV | 477 | 19 | 0.38 | 1.91 | 1.91 | 27.9 | 33.30 | 1017 |
| 15kV | 556.5 | 37 | 0.51 | 1.91 | 1.91 | 30.1 | 39.87 | 1161 |
| 15kV | 636 | 37 | 0.51 | 1.91 | 1.91 | 31.5 | 45.36 | 1295 |
| 15kV | 795 | 37 | 0.51 | 2.03 | 2.03 | 34.2 | 55.62 | 1557 |
| 25kV | 1/0 | 7 | 0.38 | 3.18 | 3.18 | 22.8 | 7.96 | 497 |
| 25kV | 2/0 | 7 | 0.38 | 3.18 | 3.18 | 23.7 | 9.99 | 556 |
| 25kV | 3/0 | 7 | 0.38 | 3.18 | 3.18 | 24.8 | 12.15 | 630 |
| 25kV | 4/0 | 7 | 0.38 | 3.18 | 3.18 | 26.2 | 15.30 | 723 |
| 25kV | 266.8 | 19 | 0.38 | 3.18 | 3.18 | 27.7 | 19.89 | 833 |
| 25kV | 336.4 | 19 | 0.38 | 3.18 | 3.18 | 29.6 | 24.57 | 973 |
| 25kV | 397.5 | 19 | 0.38 | 3.18 | 3.18 | 30.8 | 28.44 | 1086 |
| 25kV | 477 | 19 | 0.38 | 3.18 | 3.18 | 32.6 | 33.30 | 1237 |
| 25kV | 556.5 | 37 | 0.51 | 3.18 | 3.18 | 34.8 | 39.87 | 1398 |
| 25kV | 636 | 37 | 0.51 | 3.18 | 3.18 | 36.2 | 45.36 | 1542 |
| 25kV | 795 | 37 | 0.51 | 3.18 | 3.18 | 38.9 | 55.62 | 1824 |
| 35kV | 1/0 | 7 | 0.38 | 4.45 | 3.18 | 25.3 | 7.96 | 590 |
| 35kV | 2/0 | 7 | 0.38 | 4.45 | 3.18 | 26.2 | 9.99 | 653 |
| 35kV | 3/0 | 7 | 0.38 | 4.45 | 3.18 | 27.3 | 12.15 | 731 |
| 35kV | 4/0 | 7 | 0.38 | 4.45 | 3.18 | 28.7 | 15.30 | 829 |
| 35kV | 266.8 | 19 | 0.38 | 4.45 | 3.18 | 30.2 | 19.89 | 946 |
| 35kV | 336.4 | 19 | 0.38 | 4.45 | 3.18 | 32.1 | 24.57 | 1094 |
| 35kV | 397.5 | 19 | 0.38 | 4.45 | 3.18 | 33.3 | 28.44 | 1210 |
| 35kV | 477 | 19 | 0.38 | 4.45 | 3.18 | 35.1 | 33.30 | 1369 |
| 35kV | 556.5 | 37 | 0.51 | 4.45 | 3.18 | 37.3 | 39.87 | 1538 |
| 35kV | 636 | 37 | 0.51 | 4.45 | 3.18 | 38.8 | 45.36 | 1688 |
| 35kV | 795 | 37 | 0.51 | 4.45 | 3.18 | 41.4 | 55.62 | 1980 |