• The Stoned Hacker@lemmy.world
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      1 day ago

      they’re saying people like to crowd around looking at the panel, and that an arc flash will kill everyone there in a microsecond without the proper precautions

  • CommissarVulpin@lemmy.world
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    2 days ago

    One of the videos they showed during my arc flash training was a documentary of a guy who accidentally used a voltmeter on a live 2300V cabinet. The arc flash blew his clothes off and set him on fire. He stumbled blindly through the factory before finally collapsing.

  • yesman@lemmy.world
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    2 days ago

    I used to do meter work for the Power Company. I was taught that an arc flash would reach 40,000 degrees (F or C doesn’t matter, don’t ask), and could instantly vaporize tool-steel.

    I have a melted pair of pliers to prove it. Luckily, I was probably the only worker who actually used my PPE and was fine.

    • wabasso@lemmy.ca
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      1 day ago

      I guess folks in this thread are talking about different voltages, because I don’t understand how proper PPE can protect you from something that will vaporize your clothes and set you on fire.

      • ryathal@sh.itjust.works
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        20 hours ago

        Not remotely an expert. While the numbers are crazy big, the time tends to be short. The ppe doesn’t have to survive thousands of degrees for more than a fraction of a second. Also it has to route the charge through itself rather than you. Finally, for certain death scenarios successfully working ppe doesn’t mean unscathed, it means still alive with reasonable recovery chances.