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While reading through AI's "terrible car stuff" megathread, someone mentioned that on the factory floor he worked on, there was three-phase electrical equipment sitting (unattended?) on the shop floor and that this was a serious violation of any sane safety protocols. I've never been around such equipment and I don't know much about it, but I always end up curious about machines with the potential to cause horrifying, gruesome industrial accidents. Googling didn't turn much except for some verbose technical explanations seemingly written for electricians and a blog with completely unreadable formatting. So what, in
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Nov 10, 2014 05:43
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| # ? May 3, 2024 00:48 |
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Paging Three-Phase to this thread  I work with three-phase equipment all the time, primarily Bridgeport mills and engine lathes, and AFAIK the lower-voltage stuff (208v/230)isn't horrifically dangerous - in fact, each leg draws less current than a single- phase equivalent. Haven't read the AI thread though, maybe he's talking about really big poo poo. I think there's an industrial-electricity thread still active in Ask/Tell.
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Nov 10, 2014 05:54
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208V 3 phase is not much more electrically dangerous then your standard 120v outlet in terms of shock hazard as each phase is 120v to ground. The bigger hazard is that 3 phase machinery is truly "heavy duty" and "industrial". If the machine is made to cut, grind, smash, or burn, a 3 phase piece of equipment is most likely big enough to do it to your entire body in seconds. Alternatively a single phase machine made to cut, grind, smash, or burn is likely a kitchen appliance sold on late night TV for 3 easy payments of $19.95
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Nov 11, 2014 05:54
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Drheat posted:The bigger hazard is that 3 phase machinery is truly "heavy duty" and "industrial". If the machine is made to cut, grind, smash, or burn, a 3 phase piece of equipment is most likely big enough to do it to your entire body in seconds. Alternatively a single phase machine made to cut, grind, smash, or burn is likely a kitchen appliance sold on late night TV for 3 easy payments of $19.95 Here's an industrial shredder being operated without a safety guard and holy poo poo does that guy put his hand way too close to something that he's advertising as "destroys everything" https://www.youtube.com/watch?v=ibEdgQJEdTA And here's one used for shredding whole animal carcasses before incineration (in this video it's only clean cuts of meat so sfw) https://www.youtube.com/watch?v=qIkHKA9nh-Q
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Nov 11, 2014 18:25
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The video linked from the first one with the shredder grinding up engine blocks. 
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Nov 12, 2014 00:45
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Woolie Wool posted:The video linked from the first one with the shredder grinding up engine blocks.
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Nov 12, 2014 21:45
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GWBBQ posted:I couldn't have said it better. To illustrate, here's pretty much the same post I made in the AI Mechanical Failures thread. Homeboy literally gets yanked forward a bit when he's feeding it that roll of insulation. What the gently caress.
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Nov 19, 2014 07:48
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Why... why are two of the first examples tampons and pads? Is this a fetish thing?
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Nov 19, 2014 13:36
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BUTT PIPE posted:Why... why are two of the first examples tampons and pads? Is this a fetish thing? My guess is because in my experience they're both pretty tough/dense and that video is all about "holy poo poo this machine can shred anything." Not that there isn't probably a fetish for this too, mind you. 
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Nov 20, 2014 00:52
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BUTT PIPE posted:Why... why are two of the first examples tampons and pads? Is this a fetish thing? The sad thing is, without looking at the video first this right here told me what you were watching. The equipment in question is called a Muffin Monster and is used (in my industry anyway) for grinding sewage prior to pumping so as to not damage the pumps with possible debris. Tampons and pads are notorious for clogging up pumps. As for a safety guard, this machine doesn't include one because generally there is no personnel access to the equipment when it is in operation. edit: Figures I watched it with the sound off, they verbally say what the machine is called. Oh well at least I added what it's for. fake second edit: And to stay relevant to the OP, Muffin Monsters are available in three phase electric drive though the one in the video is hydraulically driven. DJ Toxin fucked around with this message at 21:54 on Nov 20, 2014 |
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Nov 20, 2014 21:14
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I maintain 1000s of 480v three phase motors. The consensus is if you touch a live wire not only will you instantly die, you'll fly like 20 feet in a violent explosion of burning flesh and rock n roll.
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Nov 21, 2014 01:50
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Kenning posted:Homeboy literally gets yanked forward a bit when he's feeding it that roll of insulation. What the gently caress. Nah, the apple. It's the apple.
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Nov 21, 2014 05:27
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| # ? May 3, 2024 00:48 |
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Woolie Wool posted:While reading through AI's "terrible car stuff" megathread, someone mentioned that on the factory floor he worked on, there was three-phase electrical equipment sitting (unattended?) on the shop floor and that this was a serious violation of any sane safety protocols. I've never been around such equipment and I don't know much about it, but I always end up curious about machines with the potential to cause horrifying, gruesome industrial accidents. Googling didn't turn much except for some verbose technical explanations seemingly written for electricians and a blog with completely unreadable formatting. So what, in 3-phase is standard in every home in a lot of european countries, UK being an exception, half the machines in my hobby shop run on 3-phase, basically all stoves, AC and the like in homes are 3-phase. Obviously 3-phase (at 400V) will be very dangerous if you get shocked, but the chances of getting a shock from it is the same as 1-phase equipment.
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Nov 21, 2014 06:03
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