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This topic comprises 2 pages: 1 2
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Topic: New product for those who enjoy electricity
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Stephen Furley
Film God
Posts: 3059
From: Coulsdon, Croydon, England
Registered: May 2002
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posted 10-30-2008 03:15 AM
quote: Joe Redifer
So what would happen if you put a finger from your left hand in one hole and a finger from your right hand in the right hole? Heart stoppage?
It is impossible to predict what would happen; people have survived at least 11kV from substations and 25kV from railway lines, while others have been killed by less than 100V. I've had 415V from arm to arm, and it wasn't an experience which I would want to repeat, it was very painful though it did me no permanent harm. I was about 18 at the time, and was standing on some scaffolding which probably should have been earthed, but wasn't. Having no head for heights I was holding on to he scaffolding rather tightly. Due to a damaged cable it was actually live on one phase. Due to my own carelessness I then touched a terminal which was quite properly live on another phase with the other hand.
I've actually met somebody who has survived 11kV; he had no memory at all of it happening, only of being in great pain in hospital with severe burns some time later.
Almost all live working on low Voltage (<1000V) equipment is now prohibited in this country.
I've seen holes being drilled in live 11kV busbars, but I don't think I'd want to do that myself.
People who get 25kV tend to be children doing silly things near railway lines. About once every year or two there seem to be stories in the news about this; again the result generally seems to be serious burns. It probably helps that their hearts are generally in better condition at that age. Of course, there are others doing similar things who do not survive the experience.
I've had 240V across me about four times, only once as an adult. I would have been in my early '20s, and we had an Elf-Lite EX-1500 portable 16mm Xenon projector in th school where I was working. This had a separate rectifier on which the projector stood, with two short cables attached to it which connected to the projector itself. A mains cable connected to the rectifier; it had a small non-standard connector on the end of it with a screw-up metal locking ring. I conected the cable to the mains first, probably not a good idea, then as I picked up the other end to connect to the rectifier the bakelite body of the connector came apart, it was obviously cracked, exposing me to the live contacts. This was just one hand, it was painful, but no worse. All the other times when I had 240V were as a young child when I had a habit of taking things to bits to see how they worked. After a few times I got the message that it wasn't a good idea to play with electrical things. I've been lucky every time, with no serious harm done, but many years ago a neighbour very nearly died from an accident with a faulty electric drill.
I'm more careful with elctricity now, and for the last thirty years or so I've managed not to connect myself to any mains Voltage.
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