This can vary depending on the power line and all operators must be aware of the power line's Danger Zone. 

• A live INSULATED overhead power line or aerial bundled conductor line of a voltage of no more than 1,000v
  Danger Zone = Within 0.5m
• A live UNINSULATED overhead power line of a voltage of no more than 1,000v
  Danger Zone = Within 1.0m
• A live overhead power line, whether insulated or not, of a voltage exceeding 1,000v but no more than 33,000v
  Danger Zone = Within 3.0m 
• A live overhead power line, whether insulated or not, of a voltage exceeding 33,000v
  Danger Zone = Within 6.0m 

Working within these Danger Zones should only be done if the power lines have been insulated and all necessary safety precautions are TAKEN to ensure the safety of all WORKERS on site. 

This can vary depending on the power line and all operators must be aware of the power line's Danger Zone. 

Working within these Danger Zones should only be done if the power lines have been insulated and all necessary safety precautions are taken to ensure the safety of all workers on site.