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LordSaturn posted:I found myself pretty annoyed that he wasn't at all explaining the difference between the times when it worked and the times when it didn't. Wikipedia is not helping me out, will someone please explain how these things are supposed to work if the answer isn't "ground the hot side through your body"? Zopotantor already said it. You won't get anything on a neutral wire, which normally is at ground potential.
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Nov 15, 2015 17:53
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BANME.sh posted:He's a stunt man and it was for a TV show That stunt still looks OSHA as gently caress though.Things can be stunts but also badly planned, stupid and dangerous.
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Nov 15, 2015 18:04
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LordSaturn posted:I found myself pretty annoyed that he wasn't at all explaining the difference between the times when it worked and the times when it didn't. Wikipedia is not helping me out, will someone please explain how these things are supposed to work if the answer isn't "ground the hot side through your body"? Yeah, that smug asshat was just swapping out the hot and neutral on the supply side and making it seem like electricity is some magic. Those things work fine as long as you are not dumb enough to assume which wire is hot.
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Nov 15, 2015 19:22
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EssOEss posted:Yeah, that smug asshat was just swapping out the hot and neutral on the supply side and making it seem like electricity is some magic. Those things work fine as long as you are not dumb enough to assume which wire is hot. I think he also showed the one he was using had a bad design. The light was not visible from all angles, so if you rotated it in your hand the light could come on but you would not be able to see it.
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Nov 15, 2015 20:48
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EssOEss posted:Yeah, that smug asshat was just swapping out the hot and neutral on the supply side and making it seem like electricity is some magic. Those things work fine as long as you are not dumb enough to assume which wire is hot. I can't believe I didn't notice that.  Also as far as false positives, the non-contact ones will also signal there's hazardous voltage in conditions where there really isn't anything. One of the electricians showed me that you can rub the detector rapidly on clothing and that will cause it to go off. Jabor posted:I much prefer photonicinduction's look at those screwdrivers: https://www.youtube.com/watch?v=AGXQNLq19FQ "I popped it!"  I love that the insulated screwdriver rated for 1kV live work handled OK up to 50kV and only failed after awhile at 100kV. Three-Phase fucked around with this message at 21:23 on Nov 15, 2015 |
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Nov 15, 2015 21:12
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I like that guy, he's like a pleasant English beflanneled mad scientist.
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Nov 15, 2015 22:22
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He's got some wonderful videos covering old British wiring and plug "standards", if you're into that sort of thing (I totally am). https://www.youtube.com/watch?v=gA3WxP0ywao&t=229s Baby cooker 
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Nov 15, 2015 22:40
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KozmoNaut posted:He's got some wonderful videos covering old British wiring and plug "standards", if you're into that sort of thing (I totally am). Gotta copy these down.
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Nov 16, 2015 01:58
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Three-Phase posted:"I popped it!" I also find it kind of interesting that it didn't seem to be the screwdriver itself that failed-- the current jumped from that copper bar to the "finger" first, which makes me wonder if the failure would have happened if that hadn't arced first.
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Nov 16, 2015 02:54
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Three-Phase posted:Also as far as false positives, the non-contact ones will also signal there's hazardous voltage in conditions where there really isn't anything. One of the electricians showed me that you can rub the detector rapidly on clothing and that will cause it to go off. That is how I "test" operation of mine. I know I shouldn't, but it is quick, easy, and it works. I did the new arc flash training thing and you aren't supposed to use non contact voltage detectors on anything under 750VAC for the test before touch procedure, has to be a meter. But they are the only way to test above 750VAC. The power linemen on site have a fancy non contact detector that actually tells you the voltage up to 100kV or something. It shows everything in kV, so 600V is 0.6, 120 I imagine would be 0.1. I assume it runs on pure loving magic.
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Nov 16, 2015 03:03
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Jabor posted:I much prefer photonicinduction's look at those screwdrivers: https://www.youtube.com/watch?v=AGXQNLq19FQ Obvious conclusion: Get yourself those yellow and orange handled german ones, it didn't fail till the voltage was 100 times its rated max. That's a nice big margin for me.
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Nov 16, 2015 03:10
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Three-Phase posted:Gotta copy these down. Apparently this is a bowl fire: http://gallery.nen.gov.uk/asset653419-.html quote:An Electric Fire used between the Wars and for some time afterwards, this item would be considered very dangerous today 
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Nov 16, 2015 03:21
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KozmoNaut posted:He's got some wonderful videos covering old British wiring and plug "standards", if you're into that sort of thing (I totally am). As interesting as this is, I had to stop watching because that guy's mike was picking up every gurgle, swallow, and sloppy lip smack.
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Nov 16, 2015 04:05
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https://www.youtube.com/watch?v=eBi5ciuZcPE
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Nov 16, 2015 04:08
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Disappointed that this wasn't Stuart Ashen trying to finally destroy his couch.
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Nov 16, 2015 04:11
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KozmoNaut posted:He's got some wonderful videos covering old British wiring and plug "standards", if you're into that sort of thing (I totally am). These are incredibly relaxing to watch.
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Nov 16, 2015 04:35
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All this electricity talk has me wanting to learn more. I recently got a job manufacturing stator coils(the bigger kind that go in generators in power plants) which is probably the most interesting manual labor/factory type job I've ever had and has me wanting to learn more. At work it's all about the manufacturing side of things we learn and I only get more and more curious as time goes on. Random googling is a pain in the rear end as apparently there are a million different kinds of coils it seems. Like anytime you google stator coils it shows the smaller kind made of lower gauge wire that are sort of looped and bunched up, like the sort inside an alternator on a car. Is there a better thread to talk about this in?
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Nov 16, 2015 05:16
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Drunk Driver Dad posted:All this electricity talk has me wanting to learn more. I recently got a job manufacturing stator coils(the bigger kind that go in generators in power plants) which is probably the most interesting manual labor/factory type job I've ever had and has me wanting to learn more. At work it's all about the manufacturing side of things we learn and I only get more and more curious as time goes on. Random googling is a pain in the rear end as apparently there are a million different kinds of coils it seems. Like anytime you google stator coils it shows the smaller kind made of lower gauge wire that are sort of looped and bunched up, like the sort inside an alternator on a car. Is there a better thread to talk about this in? Take a look at Electric Machinery Fundamentals by Stephen Chapman. It's a great toilet book and was the one we used for the course in electrical engineering. If that doesn't satisfy you, you may want to look into actual textbooks on electrical theory if you haven't already.
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Nov 16, 2015 05:47
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Three-Phase posted:
I assume that's because you're creating static electricity. Those little zaps when you try to touch, say, a doorknob can hit something silly like 20kV
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Nov 16, 2015 05:47
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C.M. Kruger posted:A airline pilot got fired for ordering a evacuation after his plane started smoking. I'm not sure if I actually believe it or not, but the airline seems to be taking the position that the evacuation was unnecessary and led to passenger injuries, which are pretty common when you send a bunch of people down the slides.
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Nov 17, 2015 04:03
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This got linked in another thread: https://www.youtube.com/watch?v=9WXHNBMLZZM A beautiful recreation of a small steamdriven workshop as it would have been in 1925. Imagine OSHAing that. All the open flywheels, gearing, belts... vvv Lovely... Munin fucked around with this message at 22:42 on Nov 17, 2015 |
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Nov 17, 2015 22:27
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Nov 17, 2015 22:40
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the wheels are locked, it's safe.
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Nov 17, 2015 22:45
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Munin posted:This got linked in another thread:
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Nov 17, 2015 22:45
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zedprime posted:I worked at a paper mill with a vintage 1920s pulp drying setup. However many steam driven engines geared to god knows how many periods and belt driven from the sources to a few hundred linear feat of conveyor belts, presses, and drying rollers. It was surreal, and most of the OSHAing was just cages around the transmission parts. proper guarding is osha
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Nov 17, 2015 23:45
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Munin posted:This got linked in another thread: While beautiful, this is the kind of stuff the labour unions very actively tried to stop. Those belts and exposed flywheels are great for having a tiny piece of clothing catch on and then pull your arm off as you walk past.
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Nov 18, 2015 00:27
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Drunk Driver Dad posted:All this electricity talk has me wanting to learn more. I recently got a job manufacturing stator coils(the bigger kind that go in generators in power plants) which is probably the most interesting manual labor/factory type job I've ever had and has me wanting to learn more. At work it's all about the manufacturing side of things we learn and I only get more and more curious as time goes on. Random googling is a pain in the rear end as apparently there are a million different kinds of coils it seems. Like anytime you google stator coils it shows the smaller kind made of lower gauge wire that are sort of looped and bunched up, like the sort inside an alternator on a car. Is there a better thread to talk about this in? Well those are for synchronous machines, you basically put DC into the rotor (the spinning bit) and it catches onto the stator's spinning the magnetic field in a motor, or makes a spinning magnetic field that induces a voltage in the stator for a generator. (I do have a little "Industrial Electricity" thread in A/T.) Drone_Fragger posted:While beautiful, this is the kind of stuff the labour unions very actively tried to stop. Those belts and exposed flywheels are great for having a tiny piece of clothing catch on and then pull your arm off as you walk past. Exposed belts are scary as hell. I'd almost take exposed knife switches (also used a lot in the past and very deadly) over those. As far as guarding goes, I've also worked around a few VERY OLD "engine" style electric motors, they look like gigantic wheels, and you can easily see the stator and rotor coils. I think the cages around the moving bits were installed in the 60s or 70s, but for a long time there was practically no guarding of the things that spun at I think a couple hundred RPM. (Slow machines, I think something like sixteen-poles.) Three-Phase fucked around with this message at 01:19 on Nov 18, 2015 |
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Nov 18, 2015 01:16
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 This guy wasn't even sitting IN the bucket, he was sitting on the corner with the bucket raised. Iirc it was this pointy bucket too, and I think my memory is correct because they were doing a lot of rock/asphalt digging over there.  They were going full speed too (11mph) which I guess doesn't sound so bad but on the bumpy rear end construction road?
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Nov 18, 2015 02:25
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Thin Privilege posted:
Boss doesn't pay after 3:30. 
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Nov 18, 2015 04:35
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Three-Phase posted:Well those are for synchronous machines, you basically put DC into the rotor (the spinning bit) and it catches onto the stator's spinning the magnetic field in a motor, or makes a spinning magnetic field that induces a voltage in the stator for a generator. (I do have a little "Industrial Electricity" thread in A/T.) Yeah, I know we have an area where we do dc/armature coils as well as the stators but I know even less about that than I do the stator coils. Anyway I had a personal OSHA moment today, although a pretty boring one compared to the stuff posted in here. I was learning to run the tape machine we use to run mica and and armor, and the rubber belt that drives it broke, hitting me square in the face. It wasn't so much tension that it hit me super hard, but if I hadn't been wearing safety glasses it could have put an eye out.
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Nov 18, 2015 05:47
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Saw this shared on Facebook yesterday. 
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Nov 18, 2015 16:34
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fognl posted:Saw this shared on Facebook yesterday. Oh God, I can't comprehend the thought process behind this. Maybe there was none.
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Nov 18, 2015 17:19
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fognl posted:Saw this shared on Facebook yesterday. what the gently caress is being attempted here?
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Nov 18, 2015 17:23
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GnarlyCharlie4u posted:what the gently caress is being attempted here?
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Nov 18, 2015 17:28
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"just keep sticking poo poo in until it works." It's the same process when I bang your mom.
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Nov 18, 2015 17:29
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GnarlyCharlie4u posted:what the gently caress is being attempted here? It looks like three way switch was removed, wired up with reverse polarity into the second circuit, and pulling power to this junction with an extension cord.
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Nov 18, 2015 17:32
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At least they used a grounded cord.
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Nov 18, 2015 17:50
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ncumbered_by_idgits posted:At least they used a grounded cord.  $1 says it's clipped off or plugged into an ungrounded outlet.
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Nov 18, 2015 17:57
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GnarlyCharlie4u posted:what the gently caress is being attempted here? Wild stab at this since i don't know what the wire colors mean, but i'm guessing doubling up to 240V over what is obviously a 120V cord? e: Yup! 
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Nov 18, 2015 17:59
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surebet posted:Wild stab at this since i don't know what the wire colors mean, but i'm guessing doubling up to 240V over what is obviously a 120V cord? I don't think so. The three wires means it was either a three-way switch for different points of turning off lighting, or was once the old kitchen 15a/15a dual powered outlets (where top and bottom each had their own 15a power wire with common neutral and ground). The extension cord is powering two different circuits from the looks of it, and he has crossed polarity on one of the circuits. They probably lost the power from which ever BX grouping was the original source, and just back fed the circuit power to give juice to whatever is back down the line. I'd like to envision it as some dummy accidentally cut the wrong line at some point, and this was some lazy rear end's way of getting power back down the line.
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Nov 18, 2015 18:14
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