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Bobbo
Airhead
Mr_Sworld
Arcing, the kind that's caused by a loose connection which is basically what's happening if you sever a cable is an incredible process to visualise. The energy is basically consuming the metal that is conducting it. I suppose I'm just a bit fascinated by welding but that's basically a more controlled version of that explosion.
I would have thought that greater amperage would hold a greater risk by a margin but LV can kill you for sure and after that it doesn't really matter how much you were killed :)
I'm not sure about the breakers that would operate on LV outside of properties. Certainly inside a house you are at incredibly low risk of death with a working RCD but sticking a shovel in an LV main does sound like the kind of thing that could easily burn you alive. You do hear about people surviving it though. I've seen video of a builder hitting one with a breaker. There were 2 of them near it and they both suffered terrible injuries, survived but I'm not sure they are working again.
I'm only theoretically interested, I'm not offering to try it out.