20 plus years ago in a land far, far, away I was working on a switch gear cabinet, 600 Volt 6000 amp, pulling abandoned panel feeders, gear was supposed to be off, supervisor and power company official were both there and confirmed it, You can't test voltage that high with a regular meter as it will either melt in your had or explode so you rely on them to give the all clear.
Well we started working on pulling out the wires (with a pulling machine hooked to the other end), Well within second the feeders hit the still live bus bars (turned out to be a back feed panel) and vaporized the interior of the cabinet, Cool part is, you can see though 6 layers of 1/16th inch metal and the bill of a ball cap when that happens. I got blow up against a brick wall and bounced off of it and the aforementioned steel cabinet 3 times before coming to a staggering stop.
People were standing on either side of me when it went off but they just go blown sideways and clear. upon turning to look at my left hand and arm I now see I've gotten 3rd and 4th degree burns up to my shoulder, and looked like a charcoal briquette!
Luck have it I was less than a mile for a hospital, I kept my cool had a co worker haul tail to get me there, walked in the door went to the window, said I needed to be seen for a burn, she handed me a clip board and said have a seat and fill this out.
I don't know if it was the shear shocking look I gave her, or if she finally got a whiff of brunt flesh or a good look at my arm, but as I was turning to go "sit down" I heard people yelling and the ER doors few open and off I went to get worked on.
I got hit 3 times working as a commercial electrician none were fun!