Other than trained and educated linemen.[soapbox mode}
I do nearly all the troubleshooting for our company (10-30 employees).
I will only take meter readings and the like with the power turned on. Any other work requires deenergization.
I don't care if the customer doesn't like the inconvenience. A dead electrician in their business is a BIG nuisance.
The last company I worked for went out of business, partly because of the death of an employee and the resultant Workman's Comp
One of the 3 owners gave up the trade forever. He and several other people had to have counseling/therapy for more than a year after this occurred, and still have recurrent nightmares.
The fella, about 25 yrs old, and one of those "legend in his own mind" guys, was working on a live definitely against company policy, and instructed not to 277V lighting circuit, while atop a scissor lift, and got the hot wire at the same time as he contacted a piece of EMT. He fell about 30 feet after he was electrocuted.
He left a widow, and 2 sons without a Dad.
We have an absolute and strict LOTO program at the new Co. If we catch a "Cowboy" working something hot, his last check will be ready immediately.
It's no joke, and not something to be taken lightly.
If you're an employer, and don't require it from your guys, I have no sympathy for your future. If your an electrician, and don't require it for yourself, think about your family.
Some of you don't have any respect for your livelihood, nor your life.
I'll see if I can get some stats. [/soapbox mode]
Try stickin' this subject up on the "Safety" parts of this Forum, and see what you get!!...s