I’m glad someone else felt the need to ask. I did work on a computer with 480V into the rack and the electrical training they made us sit through scared the bejesus out of all of us. It was basically 4 hours of watching people get electrocuted with 480v+. A 480V arc flash is no joke[0]. The training had the desired effect: we played it absolutely by the book, the CPR-trained buddy system, the PPE, everything.

[0] https://youtu.be/-iClXrd50Z8 the helpful “ding” is the best part. At any rate, imagine take that on your arms or face.