Tree worker electrocutions by voltages identified in U.S. Department of Labor, Occupational Safety & Health Administration investigation summaries.
| Voltage range (kV) | n |
|---|---|
| 0.300 and less | 5 |
| 0.301 to 0.750 | 0 |
| 0.751 to 5.0 | 6 |
| 5.1 to 15.0 | 21 |
| 15.1 to 36.0 | 10 |
| 36.1 to 46.0 | 1 |
| 46.0 to 72.0 | 1 |
| 72.1 to 121.0 | 1 |
| 121.1 to 145.0 | 1 |