Initial research

Safe working distance from power lines
* when the operating near high-voltage power line *
normal voltage(phase to phase) / minimum required clearance

upto 50kV / 10ft(3.1m)
50 - 200kV / 15ft(4.6m)
over200 - 350kV / 20ft(6.1m)
over300- 500kV / 25ft(7.6m)
over500 - 750kV / 35ft(10.7m)
over750 - 1000kV / 45ft(13.7m)

*while the transist with no boom and load or mast lowered)

normal voltage(phase to phase) / minimum required clearance

upto 0.75kV / 4ft(1.2m)
0.75 - 50kV / 6ft(1.8m)
over50 - 345kV / 10ft(3.1m)
over345- 750kV / 16ft(4.9m)
over750 - 1000kV / 20ft(6.1m)