When I am operating my lull all terrain forklift, it has a 42 foot boom/safety cage. I use it mostly on moving trees and trimming the same. However, I have had to work near power lines and it is very very dangerous if you are not constantly weighing all the probabilities of things going bad......I have ran an excavator where I have almost been tragically careless with high power lines. The power companies have lifts which are protected from grounding, but the average Lull has no protection, nor does the average excavator.....so when you make contact.....you are toast. These guys take risks, but their training and equipment minimize the risk.....the average guy in the backyard who is careless with equipment....well that is another story.