How a Circuit Breaker Works in Slow Motion - Warped Perception

How a Circuit Breaker Works in Slow Motion - Warped Perception - 4K

Рет қаралды 2,339,647

6 жыл бұрын

If you've ever wondered how that pesky circuit breaker Works inside when your lights turn off, then this is the episode you need to watch.
I open up a household circuit breaker and replicate a couple very common household fault scenarios, I film it with the high-speed cameras to reveal exactly what's going on inside that circuit breaker.
Check Out the Daily Planet Feature Here: • How Does A Circuit Bre...
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Directed By: Matt Mikka
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Пікірлер: 2 100

@Lebenspiel 5 жыл бұрын

He: Welding mask and gloves. Me: "Huh, that's a bit exaggerated." Me see the state of his right hand at the end: "Umm, maybe this guy already has some experiences behind him..."

@WarpedPerception 5 жыл бұрын

LOL...haha.. that's a good one but very true !.

@MeltingRubberZ28 5 жыл бұрын

Arc flash is brighter than the sun. Dude knows how to apply PPE.

@boho3785 5 жыл бұрын

In larger circuits, a jet of molten copper comes out. It’s dangerous.

@arslanzemail 4 жыл бұрын

He fingered a wrong hole with right hand. She had teeth in her vagina

@artanthonyenao4158 4 жыл бұрын

6:32 firsthand experience

@TheTruthSeeker235 5 жыл бұрын

Awesome I am licensed Electrical Engineer and I've never seen a demonstration of the CB internals trip like you showed before. Great work! In the name of science!

@fnsilly8983 6 ай бұрын

@@Slim_Savagewhy would that be made up?

@afeudale 6 ай бұрын

@@fnsilly8983because you can be a licensed electrician, but not a licensed electrical engineer. Two completely different fields of expertise between electrician and engineer.

@windward2818 2 ай бұрын

For much of the US in order to have public works (or even residential in some states) AC distribution projects designed and built, the drawing(s) must be approved by a licensed electrical engineer registered with the state using a stamp or embossment giving the engineers name and license number (along with other information). In the US the name professional engineer implies that the engineer is licensed with the state. @@afeudale

@foihdzas 6 жыл бұрын

As an electrician it is really nice to see how this physically works. I'm not supposed to take these apart at work ;)

@MrWip3out 6 жыл бұрын

Danny Swayze Same here. Always wondered and now I know.

@adamfortin11 6 жыл бұрын

Same!

@BenPasriche 6 жыл бұрын

And as an electrician I'm choked that you are not aware of that. How involved are you in your job not to have this knowledge. But ok we all learn...BUT Most of all as an electrician I'm choked that you are not terrified to see him working with no safety procedures. There are special equipement to wear and rules to respect. Many people die everyday from electricity.

@PatL1016 6 жыл бұрын

your choked? no, your an idiot is what you are. I am also an electrician and I know that you know nothing about electricity, the equipment (not "equipement"), or any respectable rules. 120 volts divided by 100,000 ohms of skin resistance equals 1.2 milliamps. currents between 100 and 200 ma are lethal. It sounds like you need to get more "involved" in some research before you call anyone out in the field they work in, that you don't.

@adamgravelin3002 6 жыл бұрын

People actually die from 120 volts. I'm surprised you didn't know that. 100,000 ohms is really high for skin resistance. That's the best case scenario. Also, BTW its you're (not "your").

@SteveWhiteDallas 4 жыл бұрын

WOW, that's cool. I've been an electrician for 36 years and I've never seen exactly what happens inside a circuit breaker. It makes me want to see inside an FPE breaker to find out why they DON"T trip when they should. That Square D QO breaker is the top of the line for residential panels. Some breakers will tolerate a momentary short circuit (just a quick bump of the wires) but not a QO. Great video. Just a note for anyone thinking of trying this . The mask will protect your eyes from the extremely bright arc that occurs just before contact but rubber gloves will insulate your hands from electrical shock. Leather over rubber will keep he rubber from melting from heat or getting cut.

@imsokazy4337 2 жыл бұрын

As an electrician for nearly 24 years, I've never seen this type of demo on a short circuit or amp overload. In my experience, I've learned that when a breaker is overloaded as per your demonstration ( Hairdryer, toaster oven, etc, the contacts on that breaker would fail over time. So after addressing the problem, I would replace that particular breaker for complete assurance and reliability. If the issue is an overload, I would suggest splitting the circuit is possiable, and/or running a new circuit to the specific location where the issue exists. Thank you for this educational example.

@WarpedPerception 6 жыл бұрын

*I love making videos like this on random subjects, but I need everybody to share, please.* The reason I don't do more of these is because they are kind of really not self-sustainable. Not enough people share them, please help me make a difference and share with your friends..

@PhantomHighSpeed 6 жыл бұрын

We're going to share! Right now! We love what you do with our cameras and your style!

@WarpedPerception 6 жыл бұрын

+Vision Research thanks !!, I have some other history making ideas using the phantom coming up next month, not gonna say what it is till it's posted ...😁

@fire304 6 жыл бұрын

Warped Perception done! I thought I know what was going on in there... Fascinating! Can you try to do the same with a GFCI?

@testy462 6 жыл бұрын

Warped Perception cool video, thanks for posting. Please look into some nfpa rated arc flash gloves though. Dangerous to play without them and it sets a bad example for those that don't know the dangers. They are cheap too.

@ryanclark457 6 жыл бұрын

Warped Perception I've been wondering about this for a LONG time and found very little, thank you for making this

@InsideTheMindOfMatt 6 жыл бұрын

Nice 22 years as an electrician and never got to see a breaker trip inside. Next time to create the short without the big arc in your face just use a switch :)

@WarpedPerception 6 жыл бұрын

Inside The Mind Of Matt very nice!!, I like the big arc, it makes for good entertainment!

@Frank88Workz 6 жыл бұрын

Also using your arc method, its easier to calculate the time between the short circuit and breaker contact separating. If you were using a switch you wouldnt be sure when the contact is made inside the switch.

@Hopper_House 6 жыл бұрын

Right there with you. A really cool inside look at a device we deal with on a daily basis. This will be my go to whenever I'm asked "how does this work?"

@maxwebster7572 6 жыл бұрын

keep your breakers and recover the sterling.

@griffmustard 6 жыл бұрын

There is no WOW factor in using a switch. Or should I say, there is no SHOCK value, using a switch. Y'all see what I did there.......LOL!!!

@jarodhara3761 5 жыл бұрын

Electroboom would probably just replicate the short by pushing both the wires into his tongue.

@abhishekgourav6144 5 жыл бұрын

Or might even sit on it

@yboy898 5 жыл бұрын

Lol that is soo Mehdi

@leotexas3485 4 жыл бұрын

... or placing both wires in a bathtub of water and using himself as a resistor to measure Ohms with an oscillator before the GFCI tripped.

@Jaden-up3bg 3 жыл бұрын

HAHA that guy kills me

@ne555timer6 3 жыл бұрын

Ah sh*t ,f

@TacticalSandals 5 жыл бұрын

Very glad to see that Shoenice cleaned up his act and got sober. great job man!

@AYouTubeChannelwithNoName 5 жыл бұрын

Haha

@marcusgunderson634 3 ай бұрын

Lol

@Taymanator0051 4 жыл бұрын

This is to the point and interesting, without the fluff that a LOT of random science/experimentation channels have. Nicely done.

@longitudelatitude2859 6 жыл бұрын

Great job! Thats an intesting idea - to explain how usual things work. Hope to see more videos like this :)

@manickamdhayalan 5 жыл бұрын

Great job. I'm an electrical engineer 15 yrs (but working in IT) only now able clearly see how it works!!! You were awesome, good job.

@manxman8008 6 жыл бұрын

Good electrician, still has 9 fingers. Thanks for the video - v.good

@andydu1255 3 жыл бұрын

1:44

@sergelapointe7976 6 жыл бұрын

Thanks for taking the time to show us all these things... 2 thumbs up

@upsidedowndog1256 6 жыл бұрын

Nodis iapperciatet this video. You have dun the public proud. A service to community. Nice job.

@USAjudo Жыл бұрын

I remember in class our instructor explaining this and I asked, " how does the switch move, how do the internal mechanisms behave" the class laughed at me saying the instructor already said it's a relay that opens due to high current. I clarified my question and was sill met with laughter and this time with anger from my instructor. Good to know how it actually operates and that it isn't just a relay that's connected to a switch

@mosesvillani651 4 жыл бұрын

I just short circuited my light in my room (don’t ask questions. I am stupid) Now KZfaq is recommending me a video on how short circuits work. This is proof that KZfaq is listening from your device and recommending videos according to what you say or do around your device

@WarpedPerception 4 жыл бұрын

Well from what I have experienced, it's FB and other apps that's are listening and then selling that data to Google,but I could be wrong. At least they got them recommendation right 🌝

@mosesvillani651 4 жыл бұрын

Warped Perception yeah hahahah

@koriroti 5 жыл бұрын

I once asked my high school teacher how a MCB works and he , he sent me back 🔥. Now I know . I don't need a science teacher KZfaq is all.

@leviuslee8896 5 жыл бұрын

Perfect video for anyone to understand how the circuit breaker works. Thanks!!

@michaelm4865 2 жыл бұрын

Best video ever!! I use this to teach my 2nd year electrical class. Thanks for the content

@hemiaochn 4 жыл бұрын

That's great. How about an infra Camara to show the hot point inside the breaker?

@sockeyeshutters4773 4 жыл бұрын

We pulled apart some circuit breakers at my work (facilities engineer) the other week, and this is a really cool visualization of how they actually work. Super cool!

@WarpedPerception 4 жыл бұрын

Thank you I'm glad you like that

@TheBTheBeurope Жыл бұрын

Wow ! Thank you so much. It was so easy to understand. I wasn't able to understand the whole process no matter how many times my teacher and colleagues explained it. After watching your demonstration, it just clicked in my brain ! And now it's all clear to me, how it cuts out in overload and in short circuits. Thanks a lot, man.

@do7hemath937 8 ай бұрын

No complaints here, Bro. Y'all did a great job.👍👍

@OMNIBOT2000 6 жыл бұрын

I've always wondered what them breakers looked like inside ! Thanks for sharing this ! :)

@StephenMortimer 6 жыл бұрын

Best one so far

@dalenassar9152 4 жыл бұрын

Put a clear piece of plexi to hold it together. GREAT video!

@ezrasimotwo6712 5 жыл бұрын

Fantastic.Can't stop watching this video again and again I now know what am dealing with as an electrician.Watching from Nairobi-Kenya.

@hawkboy000 6 жыл бұрын

Crazy to see how fast this happens! Excellent video!

@Airman.. 6 жыл бұрын

Always wondered how it works to me it was a black box of secrecy Thanks for spreading the knowledge

@Benoit-Pierre 5 жыл бұрын

In fact, it does contain many patents ... Much more than I could quote.

@charliehos3936 5 жыл бұрын

Don’t know why all the negativity because nobody’s gonna do this and get shocked or killed, that’s why they’re watching you! Great video!

@JacobAHull-nx6rx 4 жыл бұрын

Awesome vid man. Really cool seeing how the insides work. Thks!

@alakani 5 жыл бұрын

Why all the dislikes? The stereotypical editing is funny, and even with all the padding, I still got to see something cool without doing the work myself

@macfleet494 4 жыл бұрын

For one, he kept mixing the videos of a magnetic trip into the thermal trip segment. I kept watching for the bimetallic strip to move and instead the magnet trip happens. Second, even though this is very informative, the lack of safety might cause some to dislike it.

@peterford9369 2 жыл бұрын

I've always wanted to pull apart old breakers. Mostly to see what gets weak over time to cause a breaker go trip even when overload isn't present. Now that I've seen this, I believe its the thermal sensor part that weakens after being tripped over and over. Thanks for doing what I've wanted to do for years.

@richardnorton2024 5 жыл бұрын

Thanks, After all these years working and knowing what they do it's great to see now the insides works. If I an going to work on an outlet or swich box I use a cord like your, short it and I know witch breaker it is. Thanks again.

@raol635 Жыл бұрын

I am an electrical mechanic tech. And I used to open the faulty components after changing them. To better understand the functionality. That helps in troubleshooting. Be safe man. And thank u for the vid

@fabiobarros2348 6 жыл бұрын

He said, "até mais"?? Hahaha, awesome dude!! Great video!!

@WarpedPerception 6 жыл бұрын

Fabio Barros obrigado

@davida1hiwaaynet 6 жыл бұрын

Very great demonstration! I posted a link to your video on Facebook because many of my friends will appreciate it. A while back, I did a test with overloading power strips and extension cords. Also replaced a 20A breaker with a 100A and let it run with 5 space heaters on one power strip until it completely melted down and failed. Quite interesting! But I didn't open the breaker case to see the mechanism work. Thanks again for the demo!

@davida1hiwaaynet 6 жыл бұрын

Sorry I forgot to put this in my first comment. Here is what happens when you overload massively, with a 100A breaker in place of a 20! kzfaq.info/get/bejne/oNifeZdktKu2gqM.html

@WarpedPerception 6 жыл бұрын

davida1hiwaaynet that was a great video man, that thing had me cracking up so many times, some of the funniest moments for me or when you had everything plugged in and you said the power strips rated 13 amps hahaha that was funny.

@davida1hiwaaynet 6 жыл бұрын

Thanks! Glad you enjoyed it! It's fun to blow things up sometimes!

@joekesler8014 4 жыл бұрын

ive been an electrician for 40 years and yes I did know how a breaker works but still enjoyed his vid

@WarpedPerception 4 жыл бұрын

Thanks

@kapilramisur2503 Жыл бұрын

This was awesome and informative! thank you!

@rodrigoflorespardo8722 6 жыл бұрын

is my first time time wartching your videos, but is excellent, great explication

@Kushothe 6 жыл бұрын

The production quality is just outstanding.

@edwardcalvert 6 жыл бұрын

Thank you for sharing this. In 10th grade I took electronic science and the instructor explained this but I had problems understanding this. Now I understand it.

@tonylo.6766 4 жыл бұрын

Very informative. Thank you.

@flashesofblack4128 4 жыл бұрын

Great posting! I have been a licensed electrician for thirty years. I now the methodology of how they work but have never seen the interior of the breaker when it is presented with a short to ground or an amperage overload. Thanks!

@_Aliens_ 6 жыл бұрын

great video idea! more like this in the future?

@fred5149 5 жыл бұрын

Thank you for your knowledge sir

@joeljawili7754 3 жыл бұрын

this was helpful. thank you. i was today years old when i realized you need to switch it off before turning it back on. good job.

@rabid0111 6 жыл бұрын

Well this video is pretty accurate. In test equipment usually some fixed amount of current is run and the machine will time how long it takes until the breaker trips. That's called a thermal test. We call the short circuit condition he goes over mag testing, and that's usually done by "firing" much higher current and using much more precise timing - breakers trip very quickly, usually in less than 50ms (faster with higher current). I've seen equipment that can blast gigantic breakers with over 15000 amps, and I know some go even higher than that.

@AgentSmith911 6 жыл бұрын

Damn sh0enice, you've come far

@afriquemonafrique6104 4 жыл бұрын

Thank you son much for all these practised expériences

@candiceford88 3 жыл бұрын

Thank you.! Very informative.

@KingTen91 5 жыл бұрын

"I don't feel safe touching this.." Touches anyway

@user-cg9vp9bf5d 4 жыл бұрын

*instinctively (they’re usually hot) Due to it not being hot he went ahead and did

@somethingelse2lookat502 6 жыл бұрын

I am definitely not getting notified of your uploads. But it's ok because I start wondering and then just stop by. :) Awesome stuff you do!

@WarpedPerception 6 жыл бұрын

I know, I don't know whats happening, been getting a lot of complaints of no noti's showing up. thanks !!!!!!

@RobertNiez 4 жыл бұрын

Well done! good to see how the actual stuff work...

@sushilgharat2264 6 жыл бұрын

Thanks for the video.. It's for people who are in technical field...

@caseymcdermott1051 6 жыл бұрын

Great video. I've always wanted to do this as an electrician. The breaker used is a Cutler Hammer BR series. This have a relatively slow response rate. Other brands like Cutler Hammer CH line and Square D are much faster. Would be interested in seeing a comparison of response times. Also older Federal Pacific and Zinsco brands are terrible and known to have around an 80% failure rate. Would love to see this play out too. Thanks

@AndreChaves_ 6 жыл бұрын

"Até mais."🇧🇷 Nice video!

@WarpedPerception 6 жыл бұрын

André Chaves obrigado

@electrondegeneracy820 3 жыл бұрын

This video really helped me because I had a test coming up with the question 'Explain how a circuit breaker works' so yea this really helped, thanks Warped Perception!

@ComMando9100 2 жыл бұрын

Great video now I know how it works. Its so satisfying to see the precise working of how it just saved me all the time from burning down my home.

@bhushangarje2623 5 жыл бұрын

Watch slow motion video with 0.25x speed. You'll get ultra slow motion. THANK ME LATER ✌️

@facefaceman3616 4 жыл бұрын

Here's me thanking you later. On top of getting a better chance to review the action, everyone sounds drunk as hell while doing it. Hilarious and educational!

@KirkHermary 6 жыл бұрын

Very cool, I have understood the function but never saw trips in action. ✅

@bobalbin3659 Жыл бұрын

That was fun! I appreciate the way you got right to the topic without the long preamble.

@ericthered9655 4 жыл бұрын

Cool. Also nice way to illustrate the difference between over-current protection, and ground fault / short circuit protection. Especially important to know for anyone learning electric motor circuit sizing.

@mdw159 6 жыл бұрын

i never know there is kinda "thermal magnetic". Thanks for da Vids!

@ilsunnylo3562 6 жыл бұрын

Start at 2:28

@hgcsm 5 жыл бұрын

Cheers

@jaba67 5 жыл бұрын

Real MVP!

@beerus_sama7454 5 жыл бұрын

@johnathanescobar9225 5 жыл бұрын

No it starts at 0:00.

@marala11 4 жыл бұрын

Not questions asked! Very informative.

@niltongaviao8749 4 жыл бұрын

Very very nice choose. I became an Electric Enginneer 35 years ago and have never, ever, even thought about the matter. Thank you.

@24bit192khtz 5 жыл бұрын

the sound effect during breaker is too good.. HW style :)

@k1lometer 3 жыл бұрын

Me when I see my crush breaking up with his boyfriend: 4:31

@darkraft100 3 жыл бұрын

😂😂

@xn625 3 жыл бұрын

Orang indo bang?

@samione 3 жыл бұрын

"his" boyfriend?

@AnitZ 4 жыл бұрын

so fast. this is a big help and protection not only for the appliances but for every lives to avoid greater damage such as fire.thanks for this video.

@ulysses_grant 5 жыл бұрын

Nice video!! Greetings from Brazil!

@WarpedPerception 5 жыл бұрын

Ulisses obrigado !

@fleshtonegolem 6 жыл бұрын

AWESOME! You answer so many questions!

@Ben333bacc 6 жыл бұрын

Its not a "realistic replication" of a short circuit.... its a short circuit... wtf lol

@legendlucifer6265 5 жыл бұрын

Absolutely right😂

@bentrod3405 5 жыл бұрын

Because normally there wouldn’t be that much exposed wire touching. Also there would be other appliances plugged in more than likely that would have an affect.

@NicktheLP 4 жыл бұрын

I think he means it's a replication in the sense that it's not the actual typical event that would cause a short circuit in a household, but yes, it is indeed an actual short circuit lol

@a-wale6376 Жыл бұрын

That was good work... thank you 👏👏👏

@doczak69 5 жыл бұрын

Wow what a great informative video you hv made. Bless you.

@lydianlights 6 жыл бұрын

I find it amusing that this is edited like an over-dramatic american tv show

@WarpedPerception 6 жыл бұрын

LydianLights lol... That was on purpose.

@GumboRyan 6 жыл бұрын

Warped Perception hell Yeah lol

@GumboRyan 6 жыл бұрын

Warped Perception thanks man! Great video.

@friendstype25 6 жыл бұрын

LydianLights This is great.

@StewieGriffin505 6 жыл бұрын

Would you rather it be a computer voice-over? I didn't see anything over dramatic at all. The guy is lively and interesting.

@lloydprunier4415 6 жыл бұрын

Now I have to find more about circuit breakers. I know they have newer ones that are called spark detector or something? Thanks for showing how it happens!

@WarpedPerception 6 жыл бұрын

Lloyd Prunier your welcome

@manuelhernandezcuervo1342 5 жыл бұрын

Very clear explanation. Thank you.

@princzainzain5201 5 жыл бұрын

SUPERB MOCK DRILL - MANY THANKS

@Corpsycle 6 жыл бұрын

That was a great video

@AaronSchwarz42 6 жыл бұрын

That is super cool!

@johnyx3m104 6 жыл бұрын

Aaron Schwarдйфиьк

@tomkarafa8605 Жыл бұрын

I agree with all the comments . Taken a few different brands apart and stared at it wondering what happens . That was a great demonstration under real conditions . Oh yea , stay safe .

@duckbizniz663 3 жыл бұрын

I am not an electrician and know little about circuit breaker, but I appreciate your excellent demonstration.

@takeitapart1moretime 6 жыл бұрын

Very cool video nice job

@MrDrunkenknight 6 жыл бұрын

6ms are actually 3 times less than 1 complete period (20ms on 50Hz or 17 on 60). It's insane! This time is enough for current to reach amplitude (in case of PF close to 1) but just once

@WarpedPerception 6 жыл бұрын

MrDrunkenknight that's a great point and explains why and didn't spark every single time it tripped, so if it was in between Cycles when it tripped no spark.... Interesting

@MrDrunkenknight 6 жыл бұрын

Yep... Since current is alering it has 0 points... Sparks are caused by inductance which is L*(dI/dt) - depends on inductivity and current change speed. So, if mechanical circuit breaking occurs in point when current is near 0 there is nothing to change - no sparks. So... It's quite complex physics which I don't remember exactly

@huaahhggg9507 5 жыл бұрын

Nice job. Thanks for this.

@athalyerajan2823 3 жыл бұрын

Absolutely helpful

@DanCojocaru2000 4 жыл бұрын

Around here, in Romania, we have fuses almost everywhere, though circuit breakers have appeared more and more. Our circuit breakers work a bit differently. When it trips, it goes all the way to the open position and gets locked there. You have to press a button to unlock it and then you can close the circuit breaker again.

@pureslowmotion2918 6 жыл бұрын

I am always memorised when I watch the clips I get with my camera, but then I watch your stuff and I'm just like, *whoa.*

@WarpedPerception 6 жыл бұрын

+Pure Slow Motion lol... Thank you, I have been a filmmaker since I was about 12 years old, it has taken me a very long time to build up and develop techniques I have been mostly until recently using for Blockbusters and action movies. Glad I came to KZfaq, if you ever want to collaborate on anything just let me know.

@pureslowmotion2918 6 жыл бұрын

Omg. Thx for replying, I can tell by all the amazing angles and exposures for different things, that you are an expert at this lol 😊

@WarpedPerception 6 жыл бұрын

+Pure Slow Motion ha!, Thanks !, I'm still not at Full Throttle for KZfaq yet, I'm close. Yeah I have worked on a lot of big movies which is mostly what I specialize in

@pureslowmotion2918 6 жыл бұрын

That's so cool lol

@WarpedPerception 6 жыл бұрын

Pure Slow Motion yeah if you ever want to collaborate on anything just let me know

@tony124603 4 жыл бұрын

Thank you for the detail and clarity. You made a terrific video.

@cet_learning 4 жыл бұрын

Well done my man ... great presentation and very well executed ! Keep up the good work.

@MarchellONMarch 4 жыл бұрын

when i hear your voice without your image, i think you are Tom Hanks..😁😁 thanks for the info sir.. god bless you..

@WarpedPerception 4 жыл бұрын

Lol... Thanks. That's mainly because my voice is not warmed up, I have a lot of surgeries

@sheafromME 6 жыл бұрын

The slow motion short-circuit sounds should be the noise a menu selection makes in a video game

@dmpyron2 4 жыл бұрын

My father-in-law is a retired power EE. He’s 93 and has late stage dementia. This video was great because it brought back things from his career and showed him something new. THANK YOU! And let’s avoid testing how quickly a breaker trips when you run 120 through your body. Those experiments rarely end well. 😜

@neomaidrix 4 жыл бұрын

Very informative. Thanks!

@DerKrawallkeks 6 жыл бұрын

What about Earth leakage circuit breakers in bathrooms? They're even faster! Would be cool to see one of those in action!

@WarpedPerception 6 жыл бұрын

GFCI.... good idea i wonder if they are actually faster, that is a good episode idea, those save 1000's of lives im sure.

@maelgugi 6 жыл бұрын

Warped Perception If i recall it well, they have to work in less than 5 ms to comply with the standard. For comparison, a house circuit breaker usually trips within 16 ms, but it depends on the type (some are faster, some are slower)

@DerKrawallkeks 6 жыл бұрын

I know, I'm not native speaker so I googled. I found two ways of saying it, ELCB and GFCI.

@Spirit532 6 жыл бұрын

They work electrically - by having a balanced current transformer. The rest is just a simple solenoid. Same arc, less overall action.

@nathansmith3608 6 жыл бұрын

instead of the thermal, I think their 2nd mechanism is a faster solenoid that trips when current returns thru the protective/Earth ground line (3rd prong) instead of the common return ground line