Overhead Powerlines
Be very careful not to contact overhead powerlines or other exposed wires.
More than half of all electrocutions are caused by contact with overhead lines.
When working in an elevated position near overhead lines, avoid locations where you (and any conductive object you hold) could contact an unguarded or uninsulated line. You should be at least 10 feet away from high-voltage transmission lines.
Vehicle operators should also pay attention to overhead wiring. Dump trucks, front-end loaders, and cranes can lift and make contact with overhead lines.
If you contact equipment that is touching live wires, you will be shocked and may be killed. If you are in the vehicle, stay inside. Always be aware of what is going on around you.
Underground Powerlines
Underground powerlines present a different set of hazards. Workers digging with heavy equipment or using power tools are injured most frequently by inadvertent exposure to live underground powerlines. Be sure that you call the local utility company to submit a "locate request" before digging.
Be sure that you call the local utility company to submit a "locate request" before digging. The federally-regulated "call before you dig" number is 811. Locate crews will mark your dig site within a few days so that you know where to avoid digging. Always dig around the marks/flags, not on them.
Knowledge Check Choose the best answer for the question.
9-3. When performing hoisting operations, keep at least _____ away from high-voltage transmission lines.
You forgot to answer the question!