Working with professional arborists
If you have hired a contractor to help with tree and stump removal, make sure they have experience trimming trees near power lines. Certified utility arborists are trained to safely maintain trees and vegetation growing near power lines, arborists without this designation are at risk of devastating injury or even death.
If certain safety measures are not taken, the entire tree and surrounding area can become energized and anyone working or passing by below are also at risk of electrical shock or electrocution.
Even if someone doesn't directly make contact, electricity can arc or "jump" from the line to their equipment.
For a list of arborists that are certified Utility Specialists, visit the International Society of Arboriculture, Prairie Chapter.