foxnews.com —A 16-year-old in England somehow survived a 25,000-volt electrical shock from an overhead power line that burned his clothes off of his body.
Um... tasers routinely zap crackheads and rowdy college students with 50,000 volts. It's current that kills - not voltage. That said, I'd assume there was SOME amperage involved if it nuked his airline baggage cart driver jacket and hot pants.
And who the hell plays rugby wearing steel toe boots?! :)
It probably blew him back and momentarily stopped his heart, which was most likely why he survived. The problem with lower voltage is that it causes the muscles in the hands to contract, making it very unlikely you'd survive since you'd be clamping onto the very thing that's shocking you. Higher voltage is more likely to blow you back, increasing your odds of survival.
I'm a lineman. I have worked in many substations and never once was walking under the energized equipment and had the electricity jump out and grab me. I think something in the story isn't being told. Like "My friends dared me to grab that wire." The minimum approach distance for a 25KV line is 2' 4" or 72cm.
The "fuses" on the 25,000v AC can take 12,000 amps. But this is rarely hit,
As it's AC, he would be blown back form the lines, if that didn't kill him, the fall might, but as he was on a bridge he fell into hit. Also his shoes took the hit.
If it had been the old 750v DC third rail that Merseyrail, uses he would of died.
I believe a few details in this story to be false. Someone isn't telling the whole truth here.
Firstly, there's no reason why his boots would be struck by an arc of electricity. That's just nonsense. A conductor floating in mid-air (kid jumping?) is an insulator. Before you say, "what about planes" read this: http://www.physlink.com/Education/AskExperts/ae568 ... Slightly different scale. A conductor wrapped in an insulator (boots) is also an insulator, which means that the only way it's conceivable that this kid was hit by an arc to his boots is that the toe of his boot came in VERY close proximity to the source of the current. Otherwise there would be fires along these tracks constantly from the arcing, and last I knew, there aren't.
Secondly, the electricity didn't burn off his clothing, the steam generated when the water boiled away did. Electrical energy on it's own IS NOT heat. Heat is a different form of energy that results from electrical energy meeting resistance.
So much is missing here that this story is useless.
Man,... Imagine that. You're walking by a Railway line then you all of a sudden you fly off 25 feet with your clothes just dropping and burning off your body..
It's like a movie.
I'm not indifferent, I am glad he didn't get badly injured.
Then imagine his embarassment, well, if you just had probably the most dangerous and scary experience of your life, your last worry would be clothes..
OOOooOoooHhhh... 25,000 volts! Big number! Inconsequential! What was the amperage? This is a stupid ***** tactic that sensational journalists use to garner attention. My buddy has a low amp tesla coil that runs at 100,000 volts and about 15mA. It's enough to knock you on your ass if you're grounded, but not melt your clothes off. Journalists opt for the bigger number out sensational tendency, which really bothers me, because it dumbs down the population. It confuses inconsequential facts with pertinent information. Anybody with a brain knows the real miracle is the kid surviving a multi-amp shock, which really is incredible. All the voltage does is determine how easily the electricity can flow through his body, not its intensity.
The best thing to due in coming to the aid to someoone being electrified is to douse them in water so that they don't burn. Maybe that's what happened here.