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This video should be required viewing for anyone in the trade: http://www.youtube.com/watch?v=1wOJ7ekO5WY&feature=related
Although it shows a bunch of misfits doing something totally wrong, it clearly show how dangerous even a standard 120v receptacle can be.
Watch closely during the slow-mo, and you can see the hot, molten metal spray away from the arc, and by the time it is 4-5 feet away, the dumb kid hasn't even had time to notice, react and move away!
This reminds me of a video my fourth-year teacher showed us during class. It had an (former) electrician blinded by a screwdriver falling onto the lugs in some switchgear. He stated his last vision of this world was the screwdriver falling, he clearly saw the arc form, the metal melt, and blow right into his eyes. He made it very clear that not only does he vividly remember this image, but that he watched the whole event unfold because he didn't have time to close his eyes.
Although it shows a bunch of misfits doing something totally wrong, it clearly show how dangerous even a standard 120v receptacle can be.
Watch closely during the slow-mo, and you can see the hot, molten metal spray away from the arc, and by the time it is 4-5 feet away, the dumb kid hasn't even had time to notice, react and move away!
This reminds me of a video my fourth-year teacher showed us during class. It had an (former) electrician blinded by a screwdriver falling onto the lugs in some switchgear. He stated his last vision of this world was the screwdriver falling, he clearly saw the arc form, the metal melt, and blow right into his eyes. He made it very clear that not only does he vividly remember this image, but that he watched the whole event unfold because he didn't have time to close his eyes.