|
Mosnar posted:Electricity travels primarily along the outside (surface) area of the wire. Said wire is now de-rated .. Skin depth in copper at 60 Hz is almost a centimeter. All that wire is carrying current.
|
#
?
May 12, 2016 22:36
|
|
|
|
| # ? May 14, 2024 16:00 |
|
|
Phanatic posted:Skin depth in copper at 60 Hz is almost a centimeter. All that wire is carrying current. 8.4 mm to be exact (depending on a couple complex factors). So a wire can be almost 3/4 inch thick and most of it will be carrying current. However, the pictured wires are stranded, not solid. Each strand is its own solid wire, but much smaller than 8.4 mm. So really the whole wire is carrying current, regardless of how thick the bundle is. 
TotalLossBrain fucked around with this message at 22:56 on May 12, 2016 |
|
#
?
May 12, 2016 22:53
|
|
|
https://www.youtube.com/watch?v=keaE7QTKTYE Just when you thought LED bulbs were safe.
|
|
#
?
May 13, 2016 00:15
|
|
|
I had my annual hearing test today (and respirator fit test). Said hearing test occurred in a rv type trailer, in a "soundproof" booth that wasn't, on a busy loading dock, with a diesel generator (powering the trailer) running right outside the window, 20 yards from an active train track. Way to go, health and safety.
|
|
#
?
May 13, 2016 00:20
|
|
|
TotalLossBrain posted:8.4 mm to be exact (depending on a couple complex factors). So a wire can be almost 3/4 inch thick and most of it will be carrying current. Uh, nope! That is normal copper stranded wire. The strands aren't insulated from each other, so normal skin effect conditions still apply (more or less). Skin condition is only mitigated by using mutually-insulated conductors which are woven in a pattern to varies their location within the cable (Litz wire iirc, but i forget if thats a trademark or the generic term). You may now return to the facebook page for "I loving Love Science" or wherever you normally post. I wanna put a lockout on this thread to keep idiots from bumbling in here and being incredibly wrong.
|
|
#
?
May 13, 2016 00:25
|
|
|
Slanderer posted:What the hell are you guys talking about? Even if the cable is still sufficient to carry the load, it’s a violation of NEC 110.14(A): “Connection of conductors to terminal parts shall ensure a thoroughly good connection without damaging the conductors”. I’m pretty sure that counts as damage.
|
|
#
?
May 13, 2016 00:33
|
|
|
Platystemon posted:Even if the cable is still sufficient to carry the load, it’s a violation of NEC 110.14(A): “Connection of conductors to terminal parts shall ensure a For house wiring, sure. But I truly doubt that is related to what we are looking at here---this looks like something inside industrial equipment.
|
|
#
?
May 13, 2016 00:44
|
|
|
GnarlyCharlie4u posted:https://www.youtube.com/watch?v=keaE7QTKTYE Combination nite lite bug zapper! 
|
|
#
?
May 13, 2016 00:53
|
|
|
Burning_Monk posted:I don't think they would be pursuing the criminal charges if they just found remains of a cig butt. Most likely they found something like a fire accelerant that shouldn't have been there. An old butt near a diesel tank is enough for MSHA to cite you, probably also enough for BATF to decide it's a criminal act.
|
|
#
?
May 13, 2016 00:58
|
|
|
GnarlyCharlie4u posted:https://www.youtube.com/watch?v=keaE7QTKTYE Uhhh, I just watched this and I'm confused. While that "GU10" socket does look lovely and dumb for not being polarized, I'm not sure there is a polarity issue here. The bridge rectifier he points out provides reverse polarity protection, so there should be an issue with plugging it in "reversed". There will still be the danger of the rectified DC though, unless I'm missing something/
|
|
#
?
May 13, 2016 01:04
|
|
|
The bigger issue is his gross nails.
|
|
#
?
May 13, 2016 01:57
|
|
|
gender illusionist posted:The bigger issue is his gross nails. My fingers hurt just looking at that poo poo. His thumbnail is like 1/2 as big as it should be.
|
|
#
?
May 13, 2016 02:41
|
|
|
JB50 posted:My fingers hurt just looking at that poo poo. His thumbnail is like 1/2 as big as it should be. some poor fuckers get digitally separated.
|
|
#
?
May 13, 2016 02:47
|
|
|
Things went slightly awry at the lightsaber factory https://www.youtube.com/watch?v=kztqRO4292o
|
|
#
?
May 13, 2016 03:06
|
|
|
SneakyFrog posted:
hey, every visit to the department of labor is its own little adventure.
|
|
#
?
May 13, 2016 03:25
|
|
adventure.
|
http://i.imgur.com/CvSQBPm.gifv
|
|
#
?
May 13, 2016 04:02
|
|
|
Slanderer posted:Uhhh, I just watched this and I'm confused. While that "GU10" socket does look lovely and dumb for not being polarized, I'm not sure there is a polarity issue here. The bridge rectifier he points out provides reverse polarity protection, so there should be an issue with plugging it in "reversed". There will still be the danger of the rectified DC though, unless I'm missing something/ There is no rectifier. It's a dropper circuit with capacitors and a resistor.
|
|
#
?
May 13, 2016 04:21
|
|
|
This never, ever gets old.
|
|
#
?
May 13, 2016 04:59
|
|
|
Ok that looks like wood planks but where are they coming from? The dock supports? Edit: Oh nevermind, just saw that support structure on the boat. ChesterJT fucked around with this message at 05:19 on May 13, 2016 |
|
#
?
May 13, 2016 05:12
|
|
|
Crazy Ted posted:This never, ever gets old. I wonder if the cameraman was impaled
|
|
#
?
May 13, 2016 05:12
|
|
|
Cumslut1895 posted:I wonder if the cameraman was impaled
|
|
#
?
May 13, 2016 05:23
|
|
|
Cumslut1895 posted:I wonder if the cameraman was impaled "WPTV posted:The photographers suffered bumps and bruises and another person suffered a broken leg, the Today Show reported.
|
|
#
?
May 13, 2016 05:37
|
|
|
http://i.imgur.com/aXsXkZG.webm
|
|
#
?
May 13, 2016 05:46
|
|
|
Friends don't let friends ride mopeds.
|
|
#
?
May 13, 2016 05:47
|
|
|
 The Japanese really knew their safety stuff back then
|
|
#
?
May 13, 2016 07:24
|
|
|
Good to see the Hwach'a is still en vogue in Greece.
|
|
#
?
May 13, 2016 07:47
|
|
|
Booourns posted:
To this day I still avoid the skid demon and give timely tootels.
|
|
#
?
May 13, 2016 09:02
|
|
|
I bet you explode the ol' exhaust box a bit, though.
|
|
#
?
May 13, 2016 09:32
|
|
|
Slanderer posted:I wanna put a lockout on this thread to keep idiots from bumbling in here and being incredibly wrong. Why do you hate fun and natural selection?
|
|
#
?
May 13, 2016 11:21
|
|
|
I am going to sacrifice a virgin to the skid demon ( I am going to jump under a car)
|
|
#
?
May 13, 2016 11:25
|
|
|
Booourns posted:tootel the horn trumpet melodiously That killed me.
|
|
#
?
May 13, 2016 12:00
|
|
|
Sentient Data posted:I wonder if someone losing their tether during a space walk and consequently fatally drifting off would be listed under the stats as a fatality from a fall of over 8 feet
|
|
#
?
May 13, 2016 12:05
|
|
|
As we're posting some oldies, this came up in the AI Mechanical Failures thread. https://www.youtube.com/watch?v=AG1MnXkHhlM Stationary engine nerds are a whole safety thread by themselves. ReelBigLizard fucked around with this message at 12:10 on May 13, 2016 |
|
#
?
May 13, 2016 12:06
|
|
|
ReelBigLizard posted:As we're posting some oldies, this came up in the AI Mechanical Failures thread. That could have ended much, much worse.
|
|
#
?
May 13, 2016 13:35
|
|
|
that engine is not very stationary
|
|
#
?
May 13, 2016 14:02
|
|
|
ReelBigLizard posted:As we're posting some oldies, this came up in the AI Mechanical Failures thread. Is it a smoke machine? What's it supposed to do?
|
|
#
?
May 13, 2016 14:41
|
|
|
Karma Monkey posted:Is it a smoke machine? What's it supposed to do? It's an engine. It runs things.
|
|
#
?
May 13, 2016 14:45
|
|
|
Karma Monkey posted:Is it a smoke machine? What's it supposed to do? It's a stationary engine for hooking up equipment to, built around 1930. According to a video description this is its first time being started after 20 years of outdoor storage.
|
|
#
?
May 13, 2016 14:49
|
|
|
Cumslut1895 posted:I wonder if the cameraman was impaled General Bullshit: WGBS Channel 4 - Your local news leader › OSHA - I wonder if the cameraman was impaled
|
|
#
?
May 13, 2016 16:01
|
|
|
|
| # ? May 14, 2024 16:00 |
|
|
 I worked at a paper mill for a few summers. There was this waste container that had 50-200kg paper rolls in it. Many tons of paper in total. The problem was, that it was on a ledge and there was no easy way to empty it. The solution involved lifting the container in a tilted position and lowering it into a bigger container then opening the container door. The container had an open top so there was a risk of stuff flowing over. The belts that lift the container have loops only around the two crane hooks. So the four attachment rings rely on friction only to keep the belt from sliding. After you had lowered the container into the bigger one, you'd climb onto a forklift's forks and open the container door handle by smashing it with a lead hammer. A clear risk of falling among other things. Nothing bad ever happened, but it did feel so very wrong to see this big container lift into the air so tilted. They have a proper safe system in place now.
|
|
#
?
May 13, 2016 16:43
|
|