The day I forgot the oscilloscope was “floated” at 480VDC so I could “look down” across the main switching transistors in a custom sonar power supply was the last time I worked on anything using more than 12V after 12 hours straight. Taking that through the chest hurt! And I was in my late 20s.
Lower amperage’s can wake you right the hell up. But no, didn’t even wear my dog tags when I was in gear. I carried a pocket watch, not a wrist watch so I wouldn’t forget to take it off, and rings were just right out. Some voltages will jump that air gap right to a ring.
Another EE I worked with learned about rings. This was a low voltage power supply for a radar system processor bay. Only 5VDC, but when you get a ring across the supply to ground, and the supply is capable of 500+ amps, it will also wake you right the hell up. The ring didn’t quite melt, bit it came close before he managed to get it loose. Got a helluva burn from it.
This is why “But it’s only 12V!” comments about car batteries need to be taken with a grain of salt; if you get anything metallic across the terminals you’ll find out right quick why that’s irrelevant.
Long ago I knew a shop teacher with 9 1/2 fingers. 3rd finger of his left hand was half a knuckle long.
He was working on a car one day, and everybody knows you disconnect the battery before doing any serious mechanical work. Well, the battery clamps didn’t want to come loose so he fetched a crowbar.
“Always disconnect the ground first.” he’d say, and hold up his left hand. “Always. Otherwise, this can happen.”
That one time, he started with the positive terminal. It was most convenient that way. The clamp popped loose all right, and his wedding ring hit the fender while in contact with the crowbar. A car battery can push 1,000 amps or more through a dead short. It instantly welded the ring to the crowbar and fender and heated it red hot. By the time he could wrench it loose, it had burned down to the bone all the way around his finger.
At the emergency room, they gave him two options: “We can amputate the finger now, or you can wait a few days until it turns black and gangrenous and we can amputate it then.”
———————————
“Don’t open that!! It’s the original can of worms!”
Yep. If my compatriot hadn’t been able to break his ring loose almost immediately it would have happened to him. High volumes of electrons ain’t forgiving.
Hubby never wore any rings after he started working. Didn’t work with electrical or battery anything. His job took him to the top of log trucks. While we never knew anyone it had happened to, the warnings were enough. If slipped while on top of logs on truck grabbing and sliding could get trapped between ring and finger, ripping fingers off. Especially for men whose rings typically were large enough to go over knuckle, leaving gaps between ring finger and ring.
I was the only woman working at that job (for that company, or any company that did that work as far I knew) I didn’t have the gap (yes wore my wedding ring). Long term would I have? IDK. Wasn’t on trucks that much (mostly yard, logs were off the trucks). Then the owl and mountain happened.
A former neighbor who makes things (signs, etc.) out of recycled wood, now has all her fingers the same length on one hand due to a table saw and (her words) not paying proper attention getting distracted.
There are some things you just don’t do if you want to retain all your parts and stay healthy. Primary among these are rings or watches where either high-current or high-voltage sources or physical dangers such as you mention exist, and any type of loose clothing when operating rotating machinery; lathes, mills, drill presses, etc. That stuff is unforgiving, and doesn’t really care how loud the screams are.
Also, servicing or using any such equipment, especially high-voltage equipment, alone is less than bright.
Ever thought about the starter motor in your car? Only 12 volts, yes, but it’s basically just an educated short circut. And that battery is rated at around 260 plus amps….
Many years ago, I, wearing my favorite angora sweater, (the really fluffy type!) got just a little to close to the 480 three phase input bus bars on a warehouse input panel. Smelled it before i knew what had happened…. I was 20+ feet in the air, on a platform crane at the time….
When our last dog went to the vet’s kennel, she got a bath and grooming before leaving. Once she figured this out, it became the only bath she enjoyed. (And to be fair, she didn’t need much bathing, except to get rid of kennel stink.)
But they would put a bandana around her neck at the end, right before we picked her up. She put up with this. But as soon as she got into the car, she wanted it off and would get it off. (Irish Wolfhounds being skinny helped.)
If you tried to put a bandana on her at any other time, she would take it off, shake it like she was killing a (theoretical) rabbit, and then shred it into little pieces. The process took about a minute or so.
Some dogs, you can put stuff on them or dress them up. Some dogs do not appreciate it.
The stink was mostly sanitizer, btw. It was a very clean kennel, but you could smell medication on the dogs who were boarding there for injury care or surgery, as opposed to vacation; and you could smell sanitizer from all the cleaning.
Our dog is one of the “put up with anything” sorts.
Last week, I got called out to take a photograph… her favorite child had dragged her (who outweighs said child even NOT counting the fur) into a hammock. For tummy rubs.
Bonnets have also been deployed.
EVERYTHING is allowed if someone is playing with her. If she can get bored, it goes on the list of toys.
Reaction to first Meme: LOL :lol:
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also “yeah, true” Right?
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Yeah, the ‘at work’ one is right.
I figured out I lost an hour/day of effective work with each decade of age.
20s – pretty unlimited, for a while
30s – max 12 hours
40s – 11
50s – 10
60s – 9
My ‘go home’ criterion was 50% tYpngi rrorese.
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The day I forgot the oscilloscope was “floated” at 480VDC so I could “look down” across the main switching transistors in a custom sonar power supply was the last time I worked on anything using more than 12V after 12 hours straight. Taking that through the chest hurt! And I was in my late 20s.
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Lol. I am a 440v survivor.
“-that- ….hurt.”
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Damn, I got bit by 220v once (grazing) and that hurt like hell. I do not even want to think about 440v…
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Is not fun. Zero stars. Would not recommend.
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Lower amperage’s can wake you right the hell up. But no, didn’t even wear my dog tags when I was in gear. I carried a pocket watch, not a wrist watch so I wouldn’t forget to take it off, and rings were just right out. Some voltages will jump that air gap right to a ring.
LikeLike
Another EE I worked with learned about rings. This was a low voltage power supply for a radar system processor bay. Only 5VDC, but when you get a ring across the supply to ground, and the supply is capable of 500+ amps, it will also wake you right the hell up. The ring didn’t quite melt, bit it came close before he managed to get it loose. Got a helluva burn from it.
This is why “But it’s only 12V!” comments about car batteries need to be taken with a grain of salt; if you get anything metallic across the terminals you’ll find out right quick why that’s irrelevant.
LikeLike
Long ago I knew a shop teacher with 9 1/2 fingers. 3rd finger of his left hand was half a knuckle long.
He was working on a car one day, and everybody knows you disconnect the battery before doing any serious mechanical work. Well, the battery clamps didn’t want to come loose so he fetched a crowbar.
“Always disconnect the ground first.” he’d say, and hold up his left hand. “Always. Otherwise, this can happen.”
That one time, he started with the positive terminal. It was most convenient that way. The clamp popped loose all right, and his wedding ring hit the fender while in contact with the crowbar. A car battery can push 1,000 amps or more through a dead short. It instantly welded the ring to the crowbar and fender and heated it red hot. By the time he could wrench it loose, it had burned down to the bone all the way around his finger.
At the emergency room, they gave him two options: “We can amputate the finger now, or you can wait a few days until it turns black and gangrenous and we can amputate it then.”
———————————
“Don’t open that!! It’s the original can of worms!”
LikeLike
Yep. If my compatriot hadn’t been able to break his ring loose almost immediately it would have happened to him. High volumes of electrons ain’t forgiving.
LikeLike
Hubby never wore any rings after he started working. Didn’t work with electrical or battery anything. His job took him to the top of log trucks. While we never knew anyone it had happened to, the warnings were enough. If slipped while on top of logs on truck grabbing and sliding could get trapped between ring and finger, ripping fingers off. Especially for men whose rings typically were large enough to go over knuckle, leaving gaps between ring finger and ring.
I was the only woman working at that job (for that company, or any company that did that work as far I knew) I didn’t have the gap (yes wore my wedding ring). Long term would I have? IDK. Wasn’t on trucks that much (mostly yard, logs were off the trucks). Then the owl and mountain happened.
A former neighbor who makes things (signs, etc.) out of recycled wood, now has all her fingers the same length on one hand due to a table saw and (her words)
not paying proper attentiongetting distracted.LikeLike
There are some things you just don’t do if you want to retain all your parts and stay healthy. Primary among these are rings or watches where either high-current or high-voltage sources or physical dangers such as you mention exist, and any type of loose clothing when operating rotating machinery; lathes, mills, drill presses, etc. That stuff is unforgiving, and doesn’t really care how loud the screams are.
Also, servicing or using any such equipment, especially high-voltage equipment, alone is less than bright.
LikeLike
Ever thought about the starter motor in your car? Only 12 volts, yes, but it’s basically just an educated short circut. And that battery is rated at around 260 plus amps….
LikeLike
Many years ago, I, wearing my favorite angora sweater, (the really fluffy type!) got just a little to close to the 480 three phase input bus bars on a warehouse input panel. Smelled it before i knew what had happened…. I was 20+ feet in the air, on a platform crane at the time….
LikeLike
That is one patient kraken, there, fishing with his human… But I wonder what he’s going to put on the hook for his human to “catch”?
Or does he tug on the line, so he’s the “the one that got away”?
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I’ve heard of deep sea fishing, but Deep Ones Fishing?
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The one group of humans even Cthulhu fears,
Red-neck Fishermen.
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And justifiably so…
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doggo not sure about the labeler. Takes doing with a Samoyed
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Turned out into a Sannoyed
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I figured Doggo didn’t care about the label, Doggo was just annoyed for being made to sit still for the pic.
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That’s what he all need to do for me missus…
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Win.
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And always has the correct forwarding.
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The added blue glow on the eyes. Perfect.
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Love it! Dune reference for the win!
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c4c
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Dang it. Forgot the “send me new comments”.
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Me walking to HR is something I can relate to….lol
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When our last dog went to the vet’s kennel, she got a bath and grooming before leaving. Once she figured this out, it became the only bath she enjoyed. (And to be fair, she didn’t need much bathing, except to get rid of kennel stink.)
But they would put a bandana around her neck at the end, right before we picked her up. She put up with this. But as soon as she got into the car, she wanted it off and would get it off. (Irish Wolfhounds being skinny helped.)
If you tried to put a bandana on her at any other time, she would take it off, shake it like she was killing a (theoretical) rabbit, and then shred it into little pieces. The process took about a minute or so.
Some dogs, you can put stuff on them or dress them up. Some dogs do not appreciate it.
LikeLiked by 1 person
The stink was mostly sanitizer, btw. It was a very clean kennel, but you could smell medication on the dogs who were boarding there for injury care or surgery, as opposed to vacation; and you could smell sanitizer from all the cleaning.
LikeLike
Our dog is one of the “put up with anything” sorts.
Last week, I got called out to take a photograph… her favorite child had dragged her (who outweighs said child even NOT counting the fur) into a hammock. For tummy rubs.
Bonnets have also been deployed.
EVERYTHING is allowed if someone is playing with her. If she can get bored, it goes on the list of toys.
LikeLiked by 1 person
BUT BUT BUT — she growls at me.
Threat detection: like a boss. LOL.
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The last dog hated baths, but he loved getting blow dried afterwards.
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You posted the Hollywood piracy meme twice.
You posted the Hollywood piracy meme twice.
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probably because they make really bad movies so it needed to be twice.
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Meh. I was posting in the car (as a passenger) on insufficient coffee. You’re lucky there’s only one repeat.
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Dang it, we missed a chance to do a joke on groundhog day.
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No such thing as too much of a good thing.
And if the white dog is not telling the truth, or is taking a nap, is it lying doggo?
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By-Tor and the Snow Dog?
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Awesome song.
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All within the state….
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THIS:

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There is nothing that cats cannot appropriate for their own use:
Of course cats think everything is theirs to begin with :)
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And this would be wrong… how?
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I wonder what cat buildup does to the signal? :-D
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I wonder what mutations the cats are hoping to encourage by irradiating themselves… 8-)
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Probably way worse then rain fade on DirectTV.
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So true:
https://pbs.twimg.com/media/GF9G_ZXWcAAB7kc?format=jpg
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Nickelodeon is running “Super Bowl (whatev#) from Bikini Bottom”.
It’s better than the “real” sportsballcasters. Very much better.
Back to “light classical” channel and my SimCity game.
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I saw Boromir drifting down the river. In my defense, I have more experience with the Lord of the Rings movies than I do with leather sofas.
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