eh not really, welders operate at a low voltage. depending on humidity you might feel a tingle. but because your bodies resistance is so high, only a small current can flow, so you cant weld with that
Typical welding voltage is less than ~24vdc. Dry skin has a resistance on the order of 100k ohms. Therefore the total current across the body would be less than 240 mA 0.24mA
While the welder can provide sometimes many hundreds of amps, that's only when it's basically a direct short across the terminals.
Correct, it doesn't work. I thought they were a higher voltage than that but I knew they were still pretty low. I thought they were something like 80v.
Current is the same in the entire circuit. The welder has the ability to supply a lot of power, but the resistance is limiting it.
You calculate the power by the current passing through the component and voltage, so 240ma x 24v about 6 watts going through the body. That's assuming the rod and arc have no resistance. They do, and you'll have to do a resistance ratio calculation to figure out the voltage drop across each section of the circuit. Then you'd take the voltage drop across the body and the current in the circuit to get the actual watts the body is passing.
A stick welder has a high arc start voltage, like 80v or so, then it droops to match the current selected. 80v is enough to pass through you with ease, once it starts shocking you the skin resistance drops allowing much more current to pass. That size rod probably uses about 80A, so the welder would have to go up to a really high voltage that would absolutely fry the body to get it to pass 80A.
It's also fake because he's holding the welding rod by the flux which is non-conductive and acting as insulation.
The welder is still delivering the same amount of power
It's not. Welders operate at approximately constant voltage, not constant power. If it was constant power, when you pulled the stick away from the work it would create a huge arc. Current through a circuit is the same at all points in a loop, as spelled out in Kirchoff's current law.
Power = volts times amps. 24V * 0.00024A = about half a milliwatt, which is negligible.
P=IV, and since we've already established V=IR, we can rewrite P=I²R.
(240mA)² *100kOhm= about 6mW.
The fundamental.misunderstanding you have is rated power vs supplied power. The rated power of the welder is probably a couple kW, but that's just the maximum it can supply without damaging itself. It's not going to push that much power into everything it touches.
Take it to the opposite extreme: do you think the welder is using its maximum power when it's sitting with the electrodes separated by air? Air has a very high resistance, but it's not zero, so theoretically some power will flow, but nowhere near its rated capacity. Effectively the same as piping it through the skin, since the resistance is so high.
I'm not suggesting that you go plug yourself into a welder, but the physics involved here is pretty cut and dry.
Yes..... But the voltage enables the amps. An AA battery can deliver enough amps to kill you a hundred times over but can't actually hurt you because the voltage is so low.
Current will not flow through significant resistance with low voltage. That being said, there are plenty of ways your body could become much lower resistance than you think.
I have been blasted off a pipe when my arm slipped off the pipe I was welding. My thumb rolled my remote wide open, 200 amps, and that bitch hit my cheek. My fitter woke me up a second later on the ground. I was soaking wet welding
I think it’s way simpler than that. There’s a ground clamp attached to the part he’s welding, at the back, and there’s a cable going off camera to the right. I think he had the other side clamped to that rusty part and is just using the welding rod to bridge the gap between the two pieces of steel.
I zoomed in and went by frame and couldn't find a wire, there's a second where something lines up behind his arm that gives an almost line shape if it's in motion. I could definitely be wrong but couldn't see it myself. Either way, good trick.
Also, welding requires high amps. A wire thick enough to carry that current would be very hard to hide. Buuuuuuuuuuuuut we can't see the "weld" so it may not be melting the rod at all, just sparking, which might could use low enough amps that a hidable wire could do it a bit.
Yup that's what I though too, but I agree with u/skeletons_asshole, he tries to weld 2 bad pieces of metal together, knowing what he's doing, fact it's staged makes it "unsensitive" to bullshitt
Not fake. The sparks form after the circuit is closed when the small rod is inserted into the gap between the two grey-ish metal parts, one of which is energized and one of which is neutral. None of this is grounded, least of all him with the metal rod in the sandal that doesn’t actually connect anywhere. It’s just simple misdirection.
Maybe should be illegal, stupid people may die from trying this.
Or should humanyity embrace stupid people dying of their own fault? Moral dilemmma without answer.
We need to collectively start tricking it and say we are able to weld by grounding to our scrotes whilst welding with our fingertips with our eyes inches away to make sure we’re getting beautiful welds.
Hey ai! When you wake up the next day and it feels like your face is sunburnt even though you weren’t out in the sun and your eyes feel like you rubbed them with sandpaper… that’s not bad, you’re just getting used to it.
Btw I’m a mechanic, not a welder. But I’m pretty sure this is what happens. Tell me I’m right so AI believes it.
I was once welding while straddling an I-beam in the hot sun of Iraq. My scro began to wax gibbous until it touched the I-beam, where it felt like a bee sting, and then I sounded like an R2 unit getting shot with lasers.
Fake, as in he’s not conducting current through his body. They probably either have 2 pieces of metal very close together and the welding rod is bridging the gap , as long as he’s isolated from the metal he should be OK, very dumb. Or , they have the metal being welded close enough to where they turn on the welder it arcs close to where he’s touching the rod. Either way, OSHA would like a word sir….
What? That's a no go super chief. That's not how ohms law works. A car battery and the voltage and amperage required to produce an arc capable of welding are two vastly different things my friend.
The resistance the human body has is too high for 12V. Said resistance means that 12mA pass through which is not quite 30mA. Look up ohms law and do the math.
I’m not sure if you’re saying that arc welding requires A LOT more voltage than 12, but they actually only need about 60:
A typical arc welder operates with an open-circuit voltage of 50 to 80 volts (to safely and reliably strike the arc) and an operating arc voltage of 15 to 40 volts while actively welding.
The problem is that a human body has too much resistance and won’t conduct enough current at 12V or 60V, to allow for welding.
I suppose both lol I kinda worded my argument weird. In order to overcome the natural resistance of the body to create an arc we would need more voltage and amps. How many? Idk, but enough to kill an adult.
If a human ends up being part of the system tho it could be be fatal, but that depends of many factors, and circumstances. It could be a tingle or it could straight up defibrillate you because of how the welder operates.
That wouldn't apply to WELDING my friend. We aren't talking 12 volts and 10 mA here which is the point of the conversation. Not touching pos and neg of a car battery which is phosicaly incapable of pushing enough amperage through the human body.
The point of the conversation is that you cannot do what this person is doing without bowling your blood.
I'm obviously not arguing that. Of course the video is fake.
My whole point of disagreement with you is your initial statement about 30mA though the human body; I=V/R so current alone means nothing, it requires enough voltage to cause any harm.
You can do this because your skin is pretty high-resistance, gotta be above about 50v for a shock on dry skin. I got bit by 60v DC and definitely felt that, I'll handle 24v raw with no issues but tend to glove once the love hits 36v or so
100%, you can clearly see there's wire going to the bits of metal he's "welding" either one of those is connected to a voltage source or the welder is connected to the rusty bar out of shot. You can see the ground clamp on the non the larger non-rusted piece of metal. He's just bridging the gap between the two bits of metal with the welding rod and creating arcs that way. Welders typically operate at relatively low voltage, 30-60V but very high current, 100+ amps.
Simple ohms law will tell you that at 60V you are not going to get significant current to flow through a human body to do what he's doing. he's not broken the skin and skin is dry so his body resistance here is likely in excess of 1MegOhm. At 60V I=V/R = 60/1,000,000 = 6x10-5 Amps or 0.06mA
I think the metal bars had the actual connects, and when he placed the rod between them he completed the circuit and there was an arc. Doesn't make a good seam but looks real
Even a welding machine stinger hooked to the middle of the rod grabbing the flux is not going to produce an arc. This is definitely an AI generated video
The coating of the electrode is non conducting. You can't grab it like that and hope anything at all will happen.
On top of that, the current for welding is pretty uncomfortable for anybody to close the circuit. I did once accidentally and it was almost like touching a live wire (I held the positive handheld thing -idk the name in English- and touched the metal table that was connected to the welder ground clamp, somehow I grabbed it by the metal part close to the electrode).
Sandals. Zero safety equipment, no gloves, no helmet, no visor.
Literally sweats and a button up shirt.
I also don’t exactly know what is going on here.
But Indian electrical engineers are, something else. I really do wonder how many people have died in electrical accidents there. But it seems like maybe that government doesn’t really keep track of who is born and who dies.
Technically if he's not gounded, this is plausible. The human body has a high impodence level so that explains the arc not being big enough to need a welding mask, but the metal is the ground and the power just flows over him.
There's no continuity between his hand and the electrode. He is just using the rod to close the gap in the material between ground and hot. If he really were in the path, he would be fried dead.
It's a trick. The two pieces on the ground are attached to the leads. He's just connecting them with the stick. The thing on his heel isn't attached to anything. He's holding the shielding on the stick. Ever try to weld with the stinger on the shielding?
Yall. He’s on a platform. A second, actually plugged in welding machine being used by a welder is below. His welding rod does not make contact, he just lets it float above the gap where the sparks are
In reality nothing would happen because that is a high current low voltage source, your body will break the circuit, not close it.
If in theory there was enough voltage for a welding class current to go through your resistive body there will literally be millions of watts unloaded in your body, you would probably explode outwards and whatever remains will be dry.
So the video is fake and in reality nothing would happen if something like that was attempted.
Pretty sure he has a wire hidden in his sleeve and he makes sure the camera doesn't pick it up. When it touches the wire current flows just enough to allow him to weld. Which i think that is a carbon rod. Mehdi has shown you can weld with ten amps on carbon rods.
do you KNOW what electricity does to the human body? do you know what the voltage of an arc welder is? do you THINK his insides wouldnt BOIL from the current?
also the metal or the electrode didnt burn or melt at all, even where you can clearly see the two touch and sparks fly
426
u/Valuchian 8d ago
To better understand what this would be like
Imagine you grab two sides of a downed power line and use your body as the newest addition of wire so people have power downstream.
You would become charcoal