How Do You Get Shocked Part2

Рет қаралды 29,669

Күн бұрын

As electricians we must understand how electricity must travel in loops to be able to work. But what happens when we introduce ourselves into one of those loops? In the latest episode of Electrician U, Dustin walks us through.
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Electricity does not travel in straight lines. It must travel in loops. It leaves the source, travels through the load(s), and then back to the source. Without this loop, current will not flow, but will just stop at the point of breakage in the loop (circuit). Let’s talk first about those loops. First, there is a transformer. It could be pole mounted or pad mounted (in essence they are the same). A single-phase transformer is made of 2 complete loops. One on the primary side and one on the secondary side. The primary loop is comprised a wire coming from its source, wound thru the transformer itself, and a wire on the other end of the windings headed back to source. A loop! On the secondary side, its relatively the same, but with one added wire. The secondary windings of the transformer each have a wire leaving on their respective ends that travel to the panel (for a residential application lets assume 240v). There is also a neutral that is tapped onto the center point of the winding, which generates the neutral, so we can utilize 120v if needed.
However, with the panel hooked up to the secondary conductors as we described above, the loop isn’t completed since the phase conductors/neutral conductor are all separate from one another. So, in order for any magic to happen, we need another loop! This would be where the individual circuits come into play. Take a lightbulb for instance. It is also an open-ended loop. To help imagine, think of one entire piece of wire, with one end connected to the screw shell, up into the lamp where its coiled together at the filament, and the other end of the wire connected to the bottom of the lamp. Once a hot conductor leaves the panel (via a breaker) touches the bottom of the lamp, travels thru the filament, and back to the panel on the neutral, the circuit (loop) is complete and current can flow!
But, say we take that hot wire and cut it. We now have a complete loop but its not touching together at the point where we cut it. IF we were to grab hold of one end of the wire in one hand and the other end in our other hand, WE would become a part of the circuit and current would flow THRU us. The same could happen if we used just a finger to bridge the gap between the two cut pieces. The shock would be less as the path is only thru our finger, but a shock would be felt nonetheless! If you were to grab one end in each hand as described above, electricity would pass THRU your heart on the way to your other hand and that can cause SEVERE damage or even death! A parallel circuit shock is similar but in lieu of putting yourself inline with the current flow, you are negating the load entirely by touching each end of the loop. So, grabbing one hot wire in one hand and the other hot (or neutral) in the other, you take the load portion of the loop out and replace it with your body. And since the human body has a very low resistance, a large amount of current will be allowed to flow (as there isn’t a whole lot of resistance to slow it down). That problem is exacerbated by traveling thru your heart as you have an end of the loop in each hand!
Protect yourself from electrical shock! Turn the power off and lock it out! And if you MUST work on something while it is energized, make sure you have the proper PPE available and the proper training. We hope this has been insightful into how electricity travels in loops and how introducing yourself into them can result in a shock. Do you have a topic you would like to see discussed? Leave a comment in the comment section and let us know. Please continue to follow Dustin and Electrician U as we are constantly adding new content to assist our followers in becoming the best electricians that they can be!
#electrician #electrical #electricity

Пікірлер: 114

@davepowder4020 Жыл бұрын

Dustin, Electrician U, these last two videos have very likely saved some lives and prevented some injuries. Thank you for putting these together and posting them.

@ecospider5 Жыл бұрын

Ground wire. These have been great. I hope you are going to do one explaining how the ground wire completes the circuit.

@josephnicolas2158 Жыл бұрын

I must agree. Also would show how important electrical insulated shoes are.

@notme22 Жыл бұрын

Coming here to say Ground wire as well!!

@imperiallegionnaire6943 4 ай бұрын

Imagine you have a vacuum cleaner with a metal case. If the live wire gets loose and touches the metal, when you touch the metal you would get shocked. But if there’s a ground wire and the same thing happens, the current goes through the device, through the ground wire and back to the breaker and causes a short circuit which trips the breaker. Basically, your ground wire is a fail-safe that prevents you from touching something that could have electricity.

@ecospider5 4 ай бұрын

@imperiallegionnaire6943 Excellent example

@mikejohnson3873 Жыл бұрын

Great explanation overall! I had a minor issue with a detail regarding the whole "two-points" deal. It's easy for a layman with little knowledge of electricity to interpret these two videos as being the only way to receive an electric shock is by explicitly contacting two points in the wiring itself. Therefore, touching a hot wire all by itself should be just fine, right? Well, the definitive answer to that as we know would be: IT DEPENDS. If some guy is outside walking around in his bare feet on his driveway, grabs a damaged power cord with its hot wire copper exposed, and accidentally contacts the copper with his hand, he's going to feel a shock. It would be a relatively small current but it would surprise him enough to the point where he's going to go, "Oh shit!" As an electrician, I've been bit twice so far by only contacting a single wire with 120V potential to ground. The shocks were mild but they were definitely there, enough for me to jump back in surprise. Both times, I was kneeling on the ground working on receptacles that were your typical height of 18" to center but I was wearing normal work clothing, jeans, boots, etc. As electricians, we know that we need to have two different points of potential across some part of our body in order for an electrical current to shock us. But sometimes, that second point can simply be the ground on which we are standing, or kneeling, or sitting. Yes, the ground makes for a terrible, high-resistance return path back to the panel and transformer, but there is still a path there. And since we electricians know that electricity will take ALL paths available to it, current intensity being inversly proportional to that path's resistance, a very small current might flow but it may still be enough to feel the tingliness in your finger. Of course, if you contact a hot wire and a grounded metallic part of the building simultaneously, like a metallic water pipe, that shock is going to feel probably as bad as if you've contacted the hot and neutral wires. Every shock is different depending on wildly varying circumstances but while it is true that the body must have two points of electric potential in order for a shock to occur, one of the points doesn't necessarily have to be the directly part of the electrical system itself. Otherwise, this is a great explanation of electric shocks and why they happen!

@bmfitzgerald3 Жыл бұрын

Terrific comment, Mike. Thanks for the clarification!

@poochihuku3701 8 ай бұрын

Exactly what I was looking for! Thank you!

@Mike-pr8hx Жыл бұрын

I'm not an electrician or apprentice but knowledge is power. Thanks for making these informative videos. FWIW, one of my long time friends is a journeyman electrician that does 99% of my work. Stay safe out there.

@altuber99_athlete Жыл бұрын

In your example, you’re still touching two points: with your feet the ground, and with your hand a hot wire. :P

@JoeNathan42420 Жыл бұрын

"woods not conductive" I'm a firm believer of anything can be a conductor with enough voltage lol

@paaao Жыл бұрын

Wood actually is somewhat conductive in many situations. Like, especially when it's studs that have dozens of metal screws every few inches and bolts or nails connecting them directly to the ground (which is the same potential as the neutral conductor). I've seen faults that slowly burn and rot the wood/drywall as they trickle current back to source through the ground. They aren't large enough to trip the breaker because there is a lot of resistance, but a barefoot child or person who's standing on the concrete and touches that wall, lowering the resistance and creating a better path, will increase the current instantly causing a good shock or worse. Many homes catch fire, and many have burned to the ground because of this very situation.

@ericrioux6607 Жыл бұрын

Especially wet wood ! There are tons of artist doing “fractal burning” with a variety of voltages and currents/resistances of the wood. One way this is achieved is by introducing moisture. Kiln dried wood won’t be as conductive until very high voltages. Also want to add, people die doing fractal burns , don’t try this at home folks

@JoeNathan42420 Жыл бұрын

@@ericrioux6607 lol ever time I hear of someone doing that I chime In with the ole safety speech 🤣

@jasonparkinson7621 Жыл бұрын

Anything is conductive if the voltage is high enough-for sure.

@jamescurt4 Жыл бұрын

Yep, had a buddy doing tree work get shocked trying to get a branch stuck on a power line. Not smart lol

@billm6171 Жыл бұрын

Southwest Missouri here, I've been watching several of your videos and I really appreciate the information that you give out. Thank you very much

@jayztoob Жыл бұрын

50+ years licensed electrician and I'm STILL amazed when someone says, "But I thought that metal ATTRACTS electricity, and that's why you never use a metal ladder."

@eitantal726 Жыл бұрын

There's truth to that. GROUNDED metal will "attract" electricity

@ronaldinhothomas3961 Жыл бұрын

Quick question im young and learning…if I touch both screws of a single pole light switch even though it’s traveling through the switch already will it travel through me as well? Or will it not do this unless its off and not traveling?

@jayztoob Жыл бұрын

@@ronaldinhothomas3961 If the switch is in good condition and you aren't otherwise grounded, an insignificant flow of electricity will flow through you. This would be like touching a current-carrying conductor at two points. Measuring voltage across a closed switch is done routinely to detect a high resistance in a switch or contact, but I use a meter instead of my fingers. Testing for a blown fuse in a hot circuit is done the same way.

@jayztoob Жыл бұрын

@@eitantal726 A better way of saying this is, "If you don't know what you're doing, stay away from it."

@eitantal726 Жыл бұрын

@@ronaldinhothomas3961 It's a trick question. In reality, probably nothing will happen, but not for the reason you might think. The full answer depends on how many volts "fall on" the switch itself. This is a function on the ratio of the load of the switch itself vs. the actual load. In reality, I don't expect more than 1V, so doing so will be like touching a AA battery. Your electrical resistance is not linear. It's near infinite in a low voltage situation, but can get very low in high voltage situations

@bladnasternaster8607 Жыл бұрын

You get shocked when you are an apprentice and you are told that all of the open wires in the box that you have to splice are dead and you take their word for it. I've been hit with 277 twice, both times as an apprentice which was a long ass time ago. Sometimes we have to learn the hard way. Tell you what. That shit hurts.

@jasondonahue4747 Жыл бұрын

I get shocked every time I see my CC bill from all the Knipex tools that walks off on me.

@chris76-01 Жыл бұрын

I've been shocked a couple times but never electrocuted ⚡️😁 Wood becomes conductive at high powerline voltages.

@ecospider5 Жыл бұрын

At I think 3000v air becomes conductive.

@SirBrass Жыл бұрын

You briefly touched on impedence vs reactance. The difference is very easy. Real world loads are comprised of resistance and reactance. In mathematical terms, the reactance is the imaginary term (multiplied by the square root of -1). Impedence= resistance + reactance, even in DC circuits (because capacitive and inductive components add reactance to the load). So, impedence is the overall term to describe the load which absorbs electrical energy. It has 2 components: resistance and reactance. Even a pure resistive element will have some reactance to it due to the inherent capacitance and inductance of wire , even if those values are very small. But over large distances, like transmission lines, the reactance of the transmission lines is very much present and must be accounted for in design.

@SovietRobot69 Жыл бұрын

I was shocked from arm to arm like you described when I was a new install tech at a telco company. I drilled into a garage, unknowingly through the electric service drop, then while kneeling with one hand on the ground, had a metal fish tube in my other hand trying to get wire into the garage, touched the drop I drilled into and felt a strong vibration from one hand through my my chest to my other hand until I let go.

@Jnglfvr Жыл бұрын

Once again, what's missing in this explanation is that the neutral wire is grounded both at the pole transformer and at the distribution panel. If you are standing with bare feet on a wet concrete surface and touch a SINGLE hot wire the complete current path is from hot through your body to earth ground to ground at pole transformer to secondary neutral to hot. Certainly you are "safer" from accidental shock if you are wearing thick rubber soles which interrupt this current path but to suggest that you can ONLY get shocked by touching two points in a circuit is simply wrong. There is a potential conductive path through ground which CAN complete the circuit if you are not careful. Of course wearing PPE will mitigate this risk.

@ianbutler1983 Жыл бұрын

Yes, I think that understanding that is crucial. He touched on it when he talked about his shoes, but not very much.

@mattfleming86 Жыл бұрын

Or contact an appliance or fixture that is grounded..

@hvacmisadventures Жыл бұрын

Not sure why you say once again because he did mention that in the part 1 video. He talked about kneeling on the ground and creating the path through ground that way. It probably deserves more time in the video (or a part 3) cause some will fail to grasp that concept

@jasonparkinson7621 Жыл бұрын

He did mention that in part 1. He said if the voltage is high enough,like 10,000 V, you can still get shock by touching one end of a hot conductor.

@Jnglfvr Жыл бұрын

@@hvacmisadventures the reason I said “once again” is because I commented about this issue in the first video. Unless I completely misunderstand he appears to be saying that you can not get shocked by touching a SINGLE point of contact in a circuit. This, however, is only true if either the device is not ground referenced OR you, yourself, have no conductive path to ground. IMPLICIT in this assertion is that YOU are isolated from ground. He seems to focus on insisting that you must place yourself in SERIES with the conductors in order to get shocked. See the diagram he posted with open terminals. The only way to avoid shock with single point of contact is for the device you are probing to have a floating voltage such as being powered via an isolation transformer OR for you to be isolated from earth ground with appropriate PPE. If both you and the device are ground referenced you have, indeed, placed yourself IN SERIES with the circuit via the ground path and will get shocked with a single point of contact.

@lemonysnick5171 Жыл бұрын

Great information on this topic. Thank you

@gradyrm237 Жыл бұрын

MORE please!!

@Sparky-ww5re Жыл бұрын

I was shocked a good handful of times in my lifetime. The most unexpected happened when I was a teenager replacing a blown element in an electric water heater. Uncle Gary said the breaker was off. I verified that with a neon circuit tester across the line side of the upper thermostat. what happened was this was in the barn the breaker box was probably installed in the 60s or 70s, and either the handle tie was missing, or there were two 30 amp single pole breakers instead of a double pole 30, and one leg was still live. Could've been avoided if I had also tested from each line to the grounded tank. Similarly this is why for many years, the NEC requires a double pole breaker when multiwire branch circuits are employed.

@joepinelli2702 Жыл бұрын

Learned the hard way that existing emt can also complete a circuit

@MrMtalhead Жыл бұрын

I really enjoy your content, keep doing what your doing! If I could make a polite suggestion. Most of your videos seem to be geared towards apprentices or people that don't have very much knowledge in the trade. Maybe make some content for intermediate or Journeyman level skill level. Again just a suggestion, your doing a great job as is. I appreciate everything your doing. Thanks.

@gregorythomas333 Жыл бұрын

My mommy told me I could be anything I want...I want to be a CIRCUIT!

@aredditor4272 Жыл бұрын

I can tell people from experience, getting shocked hertz. But seriously, you can feel the 60 time per second(I'm American) hammering.

@sarjxxx Жыл бұрын

A good follow up to this I think would be "path of least resistance" aka the way birds can sit on bare live conductors and not get shocked

@declanfarber Жыл бұрын

Anybody who doesn’t already know this stuff shouldn’t be working around electricity. I’m somewhat surprised that you’ve encountered them in a working environment. Scary indeed. “Live and learn” doesn’t count for much when you’re crippled or dead. :^( But thanks for posting this, if somebody doesn’t know it they should be out.

@CoryBrian 2 ай бұрын

Knowing how something works and knowing how something needs to be done are 2 different things that help each other but are not needed. Welcome to the scary place of life. Go learn something.

@eligornish5811 Жыл бұрын

It's always possible to hit something that is grounded or offer enough resistance to ground to give you a shock.

@greggles619 Жыл бұрын

What are your opinions of people using transformers such as from a microwave and power source of a 12v car battery for diy welding machines? Do you have a safer suggestion on how to build one? And can you explain an advantage of using a car battery over a plug with a specific DC adapter instead of using AC? Love and appreciate all the knowledge you share!

@ScienceBitch123 Жыл бұрын

Wrapping the wires in a coil for the case of a bulb filament has nothing to do with it's resistance, it's just a way to make a long very thin wire more compact

@davidtsangtam5626 Жыл бұрын

I want to glow 🤣😂🤣🤣 but don't have enough impedance, as you have said. Anyways Thank you for illustrating

@turrubiartes21ify Жыл бұрын

Thanks for the video. Question! So in 5:06 does the potential difference would be between all conductors or just two ungrounded conductors because of its coil ratio?

@EASTDURHAMSL Жыл бұрын

Crazy question. So if wood is non conductive could I stand on a piece of wood and get.the benefits of insulated boot for that location ? I getit the boots are tested.

@danieldriscol4484 Жыл бұрын

Hello Mr U., say is it OK on most lights and outlets to use 14-2 wire??

@robhillstrom3283 Жыл бұрын

To clarify: Arrhythmia is the word you're looking for. When you touched 277V the current traveled through your skin and the head of the current passing through your tissue burned it. That is the red line, a first degree electrical burn. When current hits your muscle cells (including your heart) the cells are depolarized and that's why sometimes your hand can clamp shut on the conductor you are grabbing. WIth your heart the major danger is when current as low as 30 mA hits your heart muscle cells and depolarizes them at the wrong time it causes arrhythmia which if not corrected quickly causes death. It would take kV level for anything to explode though.

@ronaldinhothomas3961 Жыл бұрын

Quick question im young and learning…if I touch both screws of a single pole light switch even though electricity is traveling through the switch already will it travel through me as well? Or will it not do this unless its off and not traveling?

@robhillstrom3283 Жыл бұрын

@@ronaldinhothomas3961 I assume the switch is on and for the sake of argument not the ground. If you touch both screws on a single pole light switch you will complete the circuit and feel a zap proportional to your resistance. You form a parallel circuit to the switch and still get current. For example one dry finger of each hand or sweaty thumb and index finger of same hand in pinch grasp.

@billbaber6653 Жыл бұрын

Thanks kid

@martf1061 Жыл бұрын

Why is the earth used as a neutral / common wire ? Why not only use wires to return the unbalanced charges to the power plant? Why do we need to " middle-tap " the secondary of transformers? Why not only use 240v L-L, instead of having 120 L-N and 240 L-L ?

@Jnglfvr Жыл бұрын

That's how they do it in Europe and most of the rest of the world. Not sure why 120 became popular in N America. Maybe they felt it was safer? OTOH earthing (with a ground rod) is not intended to prevent ground fault shocks. It is there to dissipate lightening strikes. In a ground fault condition the equipment grounding conductor is what provides a low impedance path back to the distribution panel and from there its bonding to the neutral will complete the circuit with sufficient current to trip the breaker.

@martf1061 Жыл бұрын

@@Jnglfvr thanks for the clarification

@mikejohnson3873 8 ай бұрын

Fun fact. The literal earth is actually NOT used as a return path in 99% of the system. The earth is a relatively poor conductor compared to an actual metallic conductor. To be clear, in building systems and primary distribution, we use neutrals as the return paths for all currents that require the use of the neutral. Some circuits are created across phases instead and do not need a neutral as the return path because there is already two points of potential. But on the distribution system, which is typically 3-phase 4-wire, the neutral is used as a return path for all 3 phases. The nice thing about 3-phase power is that when all phases are balanced in terms of current draw, zero current will flow through the neutral because they are balanced. So the neutral ends up carrying imbalance current back to the source. And high voltage transmission lines will never have an actual neutral wire strung up on the towers, despite there being a neutral at the line’s origination. This neutral is simply grounded to the earth to establish a reference for the system. The wires at the tops are simple grounded shield wires and are not designed for carrying currents except for lightning strikes. Neutrals are not needed in transmission lines because the lines are designed so that all three phases should always be balanced since all they do is transmit power from the step-up transformer at the power plant(s) to receiving step-down substation transformers. It comes down to history as to why we opted for a 120/240 split single-phase system for residences. For starters, they’re safer because the phases in the building are only ever 120V to ground so if you get shocked by one phase and ground or neutral, you’ll get 120V across you, even if you get shocked by one of the phases on a 240V circuit.

@jayjamali2485 Жыл бұрын

Cool training aid screen that can be written on would love to know the name of it

@christopherkeeling7263 4 ай бұрын

Smart board

@ivancenteno9425 Жыл бұрын

Does it have to return to its path or not to get shocked

@eitantal726 Жыл бұрын

your body has some capacitance to it. As such, you could theoretically feel the hot wire being hot, because AC can "pass through" capacitors

@westonmalone3205 8 ай бұрын

Hold the spark plug while dad kicks the dirtbike. Thanks dad.

@ryancohen2143 Жыл бұрын

BUT - if you didn't have those insulated boots, and you touched the black lead and were standing barefoot on the ground, you could get shocked. The circuit would be completed as electricity would flow through you to the ground at zero potential, correct?

@garychiao9521 Жыл бұрын

May I ask a question that if you don't wear rubber sole boots, how the electricity complete a circuit going underground?

@williamsnyder6514 Жыл бұрын

An apprentice asked me if I was ever electrocuted I asked him if he ever drowned while swimming.

@skeetskeet9371 Жыл бұрын

Electrocution doesn’t mean just death. He even said this in his last video . Many people have the definition skewed

@codyhopwood5644 Жыл бұрын

How do you get shocked with one wire and you're only touching one wire does it have something to do with the cloth wiring

@Robsemail001 Жыл бұрын

I carry a small wooden pallet in my work van. ×)

@davepowder4020 Жыл бұрын

I was thinking... often, if we create a circuit, accidentally, via our knee touching something and our hand touching another, or just our two hands touching something, then the current often goes through the human heart. Lethally, often enough. But if somehow, our two knees or two feet were made into the circuit, say through improper footwear or just wet clothing, then the current goes up one leg and down the other... and would that result in damaged reproductive organs? No more kids? Dead bladder or bowels, for that matter?

@ecospider5 Жыл бұрын

I think except for the heart electricity hurts us by creating heat. So yes if those areas were in the path they could heat up to the point of being burned internally in milliseconds.

@jefffree6990 Жыл бұрын

So how did Uncle Fester do it without getting fried? (Just kidding). This is important required basic info. Theres at least one very popular DIYer on KZfaq that has a way too cavalier about this. I'm sure a seasoned pro knows when you have to make an exception, but I'm pretty fanatical about it when working on my house. One house, one life - take a little extra time to be safe!

@rogerpenske2411 Жыл бұрын

Pencils aren’t lead, they’re (primarily) graphite

@miraxandrax969 Жыл бұрын

so touching a hot from the source with out touching the second wire,you also get electocuted

@Makitafan Жыл бұрын

It's good practice to act as if it's always energized, even when it's not.

@DefconTraining Жыл бұрын

Would that not still be a series circuit? Only one path for current to flow. Through the person. 😳

@tedlahm5740 Жыл бұрын

Yep, and the voltage would be shared between the two loads. you and the bulb.

@raymond3722 Жыл бұрын

Think you miss the point.

@columbuspalmer846 29 күн бұрын

Can a person at 65 get into learning electrical to have a side job with a license ?

@Joel-sp8uo Жыл бұрын

First time I ever got shocked was 120v from arm to arm. I was so startled I threw my strippers across the room.

@tedlahm5740 Жыл бұрын

the second end of my PRIMARY coil is connected within the can to the same earth ground as the center tap of the secondary coil. No Second Conductor back to the power station?

@martf1061 Жыл бұрын

He did not explain well how the transformers are connected. Primary is connected to one of the phases and to earth ( 14 400V ) and lowers it to 120/240V . I still dont know why they only use ( phase to ground 14 400V) for the primary, rather than using ( phase to phase25 000V ). Just have to built the transformers accordingly.

@tedlahm5740 Жыл бұрын

@@martf1061 Phase to ground is 7,200v which is what is connected to residential step down transformers in my area of observation.

@MrGatlin98 Жыл бұрын

If you are wearing boots and touch the hot wire in a circuit, wouldn't the electricity then flow through you as if you were the wire? It would just stop at the boots instead of stopping at the end of the wire. Or are you saying that there's no electricity in the wire at all until the circuit is completed? Essentially what I'm asking is whether or not there is electricity (or maybe current is a better word) in a wire that is not a complete circuit.

@jpasher Жыл бұрын

In simple terms, current (what people often call electricity) is just the movement of electrons in a conductive material, such as a copper wire. Electrons can only move between two points with a different potential (this is voltage). In a normal circuit, the hot wire is 120V and the neutral wire is 0V, thus this is a 120V difference in potential. The electrons will move between the hot and neutral because of that difference. When you are touching a single hot wire, assuming you are not creating a path to ground (which is also 0V) through your body to the literal ground (because the ground wire is connected to a rod that is buried in the ground), you do not have a voltage differential, thus the electrons can't move. This means no current is flowing; the electrons are just sitting still. A similar concept applies to air pressure. If you have two "containers" with air, the one with higher air pressure (i.e. a higher "voltage") will want to move it's air to the one with lower air pressure (i.e. a lower "voltage") to balance out. This is why a hole in an airplane at altitude will cause things to be sucked out of the inside (the air pressure in the cabin is higher than the outside air). If you are on the ground, the air pressure in the cabin will match the outside air pressure, so everything stays put.

@MrGatlin98 Жыл бұрын

@@jpasher Thanks for this explanation! It actually makes a lot of sense now.

@electricalron Жыл бұрын

You're not an electrician until you fully understand current flow.

@spicyreef Жыл бұрын

I'm shocked everytime I click on your video🌩🙂

@israelramos7441 Жыл бұрын

i wonder how the 4 arms red guy is touching all the cables

@johnwalker890 Жыл бұрын

Sounds shocking. But I wouldn't recommend DYI or home owners wiring circuits without proper training, labs , and tests, so the trained individual understands the dangers of electricity.

@TJK50014 Жыл бұрын

Resistance is futile!

@beurky Жыл бұрын

Arrhythmia

@beurky Жыл бұрын

Btw, you're such a good teacher. Been watching for years. I'm not an elechicken, just a jackass.

@brianpiper3188 Жыл бұрын

Don't forget ground, boys and girls!

@alphasaiyan5760 Жыл бұрын

Second!

@modernbassheads5051 Жыл бұрын

Our teacher showed us a neat trick where if you take a spool of nr 12 wire, plug one end into the hot from a socket, and the other end into a neutral the whole coil magnetizes any tool you put inside of it, and it doesn’t blow up because that coil creates a ton of resistance and some kind of effect I can’t explain

@mikejohnson3873 8 ай бұрын

Windings in an AC circuit have reactance. This creates a resistance which limits the current that flows though what would appear at first glance to be a dead short since there’s nothing but wire.

@aronob Жыл бұрын

I got tricked by the Connor Mcgregor thumbnail , I thought he was a plumber not electrician

@chrissean6099 Жыл бұрын

First

@rowanirvine-roberts7005 Жыл бұрын

Love your channel but you got to subscribe to veritasium channel so much what you saying is so wrong, the way electromagnetic charge works is not the way you have been taught.

@nelsonday2778 10 ай бұрын

You really need to work off of note cards or something. You ramble a lot and repeat yourself a lot.

@jopflah416 Жыл бұрын

Once when I was about 15-16 years old I was laying in bed playing an electric guitar plugged into an amp with amp plugged in an turned on and guitar turned on. There was a fiber glass fishing rod nearby and I broke it down into 2 pieces and used the piece with the handle to strum the guitar strings (yes I thought of this before Jimmy Page. ) I got bored and was staring up at the light fixture in the ceiling. It was an 8 foot ceiling and the fixture was a two socket type with only 1 bulb installed. The one bulb was not on at the time and I looked at the wall switch which was off ( in the down position). With my fingers on the guitar strings and holding the rod by the cork handle I stuck the rod into the empty socket and got the shock of my life. Then I did it again just to be sure and sure enough got a similar shock. WHY? The rod had metal chromed ferrules where the two pieces of the rod joined together and one of those is what I jammed into the light socket.

@ecospider5 Жыл бұрын

A light switch can work by breaking the neutral wire or by breaking the hot black wire. If it breaks the hot black wire and you touch the neutral then you won’t get shocked. If it breaks the neutral and you touch the hot black wire you will get shocked if you are touching something that is grounded, like your guitar. A light switch is supposed to break the black wire so this doesn’t happen.

@Sparky-ww5re Жыл бұрын

@@ecospider5 in very old houses, the light switches are sometimes on the neutral. even more dangerous is some homes built before the late 1920s with the original fuse panel and knob and tube wiring, have fused neutrals. an overload or short circuit has a 50-50 chance of the neutral fuse blowing before the hot fuse, leaving what appears to be a dead circuit at 120v to ground all the way back to the blown neutral fuse.

@ecospider5 Жыл бұрын

Yes this is a good example why you use a voltmeter to check for voltage and you shouldn’t trust one of those blinky tools to see if something is safe. I test every wire to ground and to each other. It’s amazing how often I find something with like 70v with full amperage in 1970’s houses.