Thanks Joe. 3 phase has always mystified me but with your videos I'm getting nearer understanding it all.
@JoeRobinsonTraining
4 жыл бұрын
Glad they're helping. As always if you have any questions or suggestions for future videos let me know!
@sparky9378
4 жыл бұрын
Fantastic video joe thanks
@JoeRobinsonTraining
4 жыл бұрын
Thanks very much, stay tuned for more!
@Sergey3023
4 жыл бұрын
OMG.Just found your channel and can't fully describe how easier its for me to understand stuff that I've been taught with City and Guilds. Absolutely brilliant ,thank you!
@JoeRobinsonTraining
4 жыл бұрын
Glad it's helpful, stay tuned for more!
@tedlahm5740
4 жыл бұрын
But we did need the neutral with two phase of usage, as well as single phase. Very well presented video. Thank you.
@JoeRobinsonTraining
4 жыл бұрын
Spot on Ted, you may remember from the previous video though that when we removed the neutral connection for two lamps they dimmed, I'll explain this in a future video!
@xerxes456
4 жыл бұрын
@@JoeRobinsonTraining could you use square root of 2 that give you lower voltage?
@tedlahm5740
Жыл бұрын
@@JoeRobinsonTraining Joe: revisiting this subject 3 years latter. Still a Learner. Does the VOLTAGE jump up on 3 phase open neutral on the individual legs with ONE LEG no longer has no load? P.S. You do not look a day older.
@keitho77
4 жыл бұрын
Excellent video Joe. Very clear and concise explanation. No wonder I Subscribed!!
@JoeRobinsonTraining
4 жыл бұрын
Glad it came across that way. Plenty more on the way so stay tuned!
@PunmasterSTP
2 жыл бұрын
No neutral required? More like "The amount of knowledge conveyed in these videos is wild!" Thanks for making and sharing them.
@gbelectricks
4 жыл бұрын
Excellent video again joe. I watched the first one a while ago, could you not leave it so long for the next instalment!! The suspense is killing me😄👍
@JoeRobinsonTraining
4 жыл бұрын
😂 Sorry Gareth, it was an absolute monster of an edit. Next three phase video should drop next Wednesday. Thanks for the support! 👍
@esfae8250
4 жыл бұрын
Hello Joe, Outstanding Video. Very informative and a great training tool.
@JoeRobinsonTraining
4 жыл бұрын
Thank you kindly, there's more to come so stay tuned!
@shamanking5195
7 ай бұрын
Hi Joe. We have a motor that was recently rewound, full service done to it. But when we installed it is pulling high amps in two phases only. supply voltage = 460 motor amp rating = 283 voltage phase to ground phase A =279 phase B = 280 phase C = 282 amps per phase phase A= 277.0 amps phase B = 296.0 amps phase C = 286.0 amps we are using a soft starter to get the motor up to speed , once the motor is at full speed a bypass contactor is energized and from that moment On the soft starter is only waiting for the stop command we are going across the line with the contactor. We suspected the bypass contactor was faulty and causing the high amps , but when we inspected the contactor it was in good condition , it worked properly. We checked for loose connections and found none . motor and cables Megged good. There is not enough imbalance to cause the problem. Any idea what could be causing this problem ???.
@brightspark263
4 жыл бұрын
Great video as always Joe, it's really helping my understanding of 3-phase supplies. I've always found 3-phase a fascinating subject, these videos are perfect for anyone trying to understand the underlying principles behind it.
@JoeRobinsonTraining
4 жыл бұрын
Thanks for the nice comment, I'm glad they're helpful. The edit on this one was a nightmare so glad it wasn't in vain! Stay tuned for more...
@ahmedfayez4596
3 жыл бұрын
Thank you Sir for this amazing video. I am a junior biomedical engineer working on Xray machines. I have noticed that we are not connecting the neutral line in the generator and i was wondering why. Just watched this video and you explained it! Appreciate it.
@JoeRobinsonTraining
3 жыл бұрын
You are welcome! 👍
@lsnogaming2893
4 жыл бұрын
Fantastic as always Sir 👍
@midkort
3 жыл бұрын
This is a great explanation. I appreciate the fact that your explanation uses the actual goings on in the circuit. This really helps me understand - as opposed to just believing - how the circuits operate. Thank you! You just gained a subscriber.
@JoeRobinsonTraining
3 жыл бұрын
Good to hear. I'm really glad the video helps. 😊
@m0nkeytr0uble
3 жыл бұрын
just found your channel and as i just started my apprenticeship in germany this is really helping filling in the gaps of the language barrier. so far one of the best explanations ive found and easily put across so thank you dude
@JoeRobinsonTraining
3 жыл бұрын
Ah great to know, glad the content is helping and thanks for commenting. 👍
@PunmasterSTP
2 жыл бұрын
How has your apprenticeship been going?
@simonabel6869
4 жыл бұрын
Great video, keep the three phase one's come.
@JoeRobinsonTraining
4 жыл бұрын
Thanks Simon, next week's video is a three phase one as well. 👍
@mohammadsamir2713
3 жыл бұрын
Actually one of the best explanations, but with a greater explanation always comes more questions, you said that the current at the neutral point will be always zero, and you thankfully proved it by experiment, so there is the question "how could we get 8.4 amps in the lines before the heater while at the other end (the neutral point) has zero amps ?", it doesn't make sense to me as it means there is no charge carriers moving at all, they stop each other
@dimitrisblane6368
5 ай бұрын
They don't stop each other. They sort of "push/pull" each other at the other side of the load so it's always zero. As the 3-phase graph describes. You could think of it with the water example. At one point in time motor 1 might be pushing 5 litres of water, while motor 2 is sucking 3 litres and motor 3 is sucking 2 litres. The current from one phase will go through the load and then balance out with whatever the currents on the other 2 phases are doing cause they are in perfect balance.
@vanderpant2116
4 жыл бұрын
Great vid, like all your other vids are, your ability to convey your knowledge in a simple easy to understand way is exceptional.
@JoeRobinsonTraining
4 жыл бұрын
Aw, thanks for the kind comment 😊 just hoping the videos help people out. Stay tuned for more!
@DaftSwank
4 жыл бұрын
This is brilliant stuff. Thank you! I wish Joe Robinson and KZitem were around back when I was in Uni!
@JoeRobinsonTraining
3 жыл бұрын
Thanks for the kind comment. 😊
@LSF315
4 жыл бұрын
Great video, Joe. Mystery solved although it seems too simple! I guess the way to look at it is that any wave form above the axis line is a positive figure and any value below the wave form is a negative figure; add these three up and you have the value of zero?
@JoeRobinsonTraining
4 жыл бұрын
It pretty much is that simple and you've totally got the point of the positive and negative values. It gets a little trickier when we start looking at imbalanced three phase loads. Stay tuned for next week's video!
@LSF315
4 жыл бұрын
Joe Robinson Training brilliant; can’t wait.
@neilholmes1275
Жыл бұрын
Did wonder about this yesterday, I'm not an electrician but wondered how a 3 phase SWA cable could get away with a neutral that wasn't 3 times the size of the lives. Read some text that explained it but no where near as well as your video. Brilliant.Thanks
@leoleorelated
4 жыл бұрын
Really valuable due to the work I’m currently doing, thankyou👍🏾
@JoeRobinsonTraining
4 жыл бұрын
My absolute pleasure Leo, stay tuned to get ahead for next week!
@a_l7515
4 жыл бұрын
Great video joe
@JoeRobinsonTraining
4 жыл бұрын
Thanks very much!
@Andrew-hu9ke
3 жыл бұрын
Excellent presenter and teacher - Thank you Joe 👍
@JoeRobinsonTraining
3 жыл бұрын
Ah thanks. That's really kind of you to say. 😊
@mohamedkhalid7708
Жыл бұрын
This is the easiest explanation that I came across so far. Thank you very much. Superb!
@79brumley
3 жыл бұрын
Omg this video is absolutely amazing, Helped me soo much in my AC principles class.
@JoeRobinsonTraining
3 жыл бұрын
Great to know. Make sure you check out my other videos. 👍
@n4thb4dc0
4 жыл бұрын
Another great video 👍🏻👍🏻👍🏻
@JoeRobinsonTraining
4 жыл бұрын
Thanks very much for commenting, stay tuned for more!
@vievlogs589
4 жыл бұрын
Time to learn with Joe 📚
@AlanLumsden
4 жыл бұрын
Great video Joe 👍 Prime mover comes to mind...
@JoeRobinsonTraining
4 жыл бұрын
Thanks very much Alan!
@shahedkhan-bx1iw
Жыл бұрын
your practical explanation way more specific than any others I need a practical explanation about Filter from you. Like you so much❤❤❤❤
@altuber99_athlete
2 жыл бұрын
5:20 This part is a bit misleading. We don’t need the neutral wire to complete the circuit in a three-phase circuit even when we have unbalanced conditions. This is because the phase wires act as return wires in different intervals of time.
@mohamedabdelmonem6468
10 ай бұрын
Beautifully explained ....Thanks
@JoeRobinsonTraining
9 ай бұрын
Thanks for all the comments! 😃
@devonsalmon7554
3 жыл бұрын
Hello I like your videos. You put them across so that most people can understand. There is a circuit that I would like you to do for a group of us. We would like you to show us a lift station with a high float and a low float switch. How I want it to operate is, when the water, sewage or any liquid rises it turn on the low float but the motor does not start until the water or sewage reaches the high float. When the water is pumped out the motor does not stopped until the water is down to the lower float. Thanks in advance.
@JoeRobinsonTraining
3 жыл бұрын
Sounds intriguing, il add it to my to do list. 👍
@edwindelfin7923
4 жыл бұрын
Amazing explanation. I have a question, there are loads that require two phases, for example an air conditioner or a 220 V luminaire. This type of load does not require a neutral conductor, where does the current return to? How does this kind of system work? Can you make a video about it, please? Thank you! Greetings from Mexico, you've been my best teacher so far!
@JoeRobinsonTraining
4 жыл бұрын
Ah, thanks for the kind comment Edwin. In a two phase circuit the current just passes down one phase and back down the other before it changes direction.
@smacool2975
2 жыл бұрын
@@JoeRobinsonTraining Would you mind explain the answer further, I didn't unfortunately get the answer.
@deang5622
Жыл бұрын
@@smacool2975 You have two conductors connected to the load. In order for electricity to flow, there must be a continuous unbroken loop for the electricity to flow on. It starts off from the voltage source, travels along the conductor to the load, passes through the load and then returns down the second conductor back to the voltage source. That is all there is to it.
@kaokaoylan4510
3 жыл бұрын
Marvelous teaching, my local lecturer only did throwing equations and electrical diagrams at my face...
@JoeRobinsonTraining
3 жыл бұрын
Thanks, tell your classmates! 👍
@KannanKannan-om9ln
4 жыл бұрын
I have seen 1000 video.But your videos are my life.
@JoeRobinsonTraining
4 жыл бұрын
Thanks very much, that's really kind.
@turbotrana
3 жыл бұрын
I've always wondered about this and you answered beautifully.
@oblu43
4 жыл бұрын
Excellent Way of presentation.....Three Phase Concepts made explicitly simple....Appreciated..
@JoeRobinsonTraining
3 жыл бұрын
My pleasure, thanks for commenting. 😊
@TheInkBuildUp
6 ай бұрын
Finally a video that made things more clear. 10:28 literally made say, "ooooooooooh. now I get it."
@ravindulakshan770
2 жыл бұрын
Many many thanks sir... I was trying to understand about three phase. Finally, I got it..
@JoeRobinsonTraining
2 жыл бұрын
Ah brilliant, love hearing this. 😊
@alexsotelo7176
Жыл бұрын
This video has answered so many of my questions
@siddhat7802
3 жыл бұрын
Informative series of videos. It is great to see how you build up the concepts one after the other.
@JoeRobinsonTraining
3 жыл бұрын
Thanks very much, you can understand anything if you take the right steps. 👍
@wagabira
2 жыл бұрын
wow, that's crazy stuff. I must be on my 3OTH video. great information and very well explained. thanks a million
@smokinpea
3 жыл бұрын
Just came across your channel & found this video super clear & extremely helpful (my apprenticeship, in the UK, finished over 30 years ago & since then I have had no exposure to 3-phase systems). Now in Gemany I have a 3kw immersion heater element, of the 400v 3-phase variety, to install at home. No info came with it & I can find nothing online (happy days!). From a visual inspection of its internal connections it is STAR configured, with 3 individual heating elements - one per phase. I have measured the resistance of each individual heating element/phase (i.e. to the neutral point) & they are all the same. I understand that this then represents a 'balanced load' scenario, and thus does not need the Neutral line to be connected. My question is, is there any disadvantage of connecting the Neural line if it is already there/available to do so? I don't beleive that there is but... Thanks ever so in advance for clarifying this.
@antmerritt
4 жыл бұрын
Brilliantly put cheers buddy 😁👊👍
@JoeRobinsonTraining
4 жыл бұрын
You're welcome Ant, thanks for the message, stay tuned for more!
@rjpoonia717
Жыл бұрын
Great Explanation, simplified to the maximum and easy to understand.
@WorldEngineersOnline
2 жыл бұрын
Excellent explanation.
@JoeRobinsonTraining
2 жыл бұрын
Thank you!
@williammcintosh6006
4 жыл бұрын
Knocking it out the park Joe!
@JoeRobinsonTraining
4 жыл бұрын
Thanks Will, nice to know they're helping!
@vipinv8004
4 жыл бұрын
Great explanation. I wish i had a teacher like you....
@JoeRobinsonTraining
4 жыл бұрын
Ah, but you do, right here on KZitem!
@coolminded850
3 жыл бұрын
Awesome explanation. Thanks a lot for sharing such a valuable and highly practical content.
@crozwayne
3 жыл бұрын
Excellent video, very informative for me, a non spark mech engineer who has to play with electricomagical angry pixies from time to time!
@peterdelapena8713
Жыл бұрын
excellent video. clear and precise. straightforward and easy to understand.
@moisty254
3 жыл бұрын
That 3 phase current cancelling example finally cleared the air for me after all these years on no need for neutral on balanced load, thanks! Got a question though- the electrons still need to return to their source, so at any given degree of rotation is the electrons flowing down the respective phases in the opposing directions back to the source?
@serpaolo7413
2 жыл бұрын
I have the same question? Any answer?
@Richard-fp1mk
2 жыл бұрын
Brilliant explanation. Something I've been looking for in a long time.
@Koggy9
2 жыл бұрын
Great video and makes sense when you have 3 balanced loads, but (unless I'm missing it) there isn't an explanation as to why when loads are only on L1 and L2 that the current in the neutral is the same as the individual loads? Sorry, new to this so might be a dumb question?
@mohamedyuszal8189
Жыл бұрын
Thank you so much for this amazing and direct video. Definitely looking forward to more videos from you
@nick281972
Жыл бұрын
This had me baffled for years, all it takes is the right teacher.
@g00glian0
3 жыл бұрын
Amazing how simple you made that to understand. So cool to understand this now!
@64NVG
6 ай бұрын
Thanks a lot for the efforts taken to produce this very valuable content! I have two questions and hope you can clarify. 1. Even though loads are balanced, the current must flow through closed path and hence at any moment, current from one phase gets split and flows through other two phases. Is this correct? 2. In typical medium voltage distribution system, there is never a neutral, and the loads connected could be far from balanced. How does the net current (vector sum of all three phase currents) flow in this case? Does it flow through other phases as in case of balanced loads? If yes, then how get current in neutral in this video? Thanks a lot again for your time!
@SilverthorneA27
Жыл бұрын
Another great video! This guy kicks ass!
@swrdashy
9 ай бұрын
Thank you for your explanations...
@hadrizharif
3 жыл бұрын
Joe, thanks for answering my curiosity! Great video and explanation
@brentkelly5445
2 жыл бұрын
ty for that clarity. The only thing I don't see is at the 10:35 mark the total is a clear as day. 8-4-4=0. When you had 2 legs on it was 8 on the neutral. However when you pick any point on that waveform and try to match A + B they don't add up to 8 all the time. say for instance at the line you inserted. The red phase is 8 but either of the other 2 are -4. 8-4=4
@JoeRobinsonTraining
2 жыл бұрын
It's the same principle as a single phase sine wave, it will have a different value at different points. What you're looking for is the rms value of the wave form. 👍
@brentkelly5445
2 жыл бұрын
@@JoeRobinsonTraining ty . one more question if you have the time. It would be almost impossible ,yes?, to have a panel balanced at any one moment. Thus there is always an amount of unbalanced current running back to the panel neutral, and from there to??? back through the service? Also in your example here if you touch the neutral in the balanced state you are fine. if you touch in when one heater is on .... you are toast?
@JoeRobinsonTraining
2 жыл бұрын
@@brentkelly5445 it depends on the type of loads connected to the panel really. If you've got three phase motors it should be almost perfectly balanced, many three phase motors have no neutral for this reason. If you've got lots of different single phase loads, lighting, sockets etc., it's almost impossible to get it balanced. Touching the neutral is different as it's the voltage between neutral and earth that causes a shock, in theory you shouldn't get a shock from either a balanced or an unbalanced neutral, but as it's classed as a live conductor you'd NEVER want to touch it as things do go wrong and you could get a shock. Hope that helps. 😊
@brentkelly5445
2 жыл бұрын
@@JoeRobinsonTraining ah yes ty. because the neutral to ground is less resistance than me.
@mickuljatheseagull
3 жыл бұрын
Really rally good explanation
@JoeRobinsonTraining
3 жыл бұрын
Thank you. 👍
@nickh2799
2 жыл бұрын
This video was perfectly explained thank you sir
@tylerarrigoni7700
2 жыл бұрын
Nicely done!
@Xxxcappie23
2 жыл бұрын
Brilliant video .Please do more
@philbasset7259
4 жыл бұрын
Great videos Joe, your the only one covering the 3 phase, its obviously to technical for all the others 🙄 👍🏻
@JoeRobinsonTraining
4 жыл бұрын
Thanks very much, I'm sure there's others who explain it better! New 3 phase video dropping today and it's a monster!
@WongChiShen
3 жыл бұрын
Very understandable video about three phase thanks Joe
@henrytwigger2245
Жыл бұрын
Good to see you using proper British colored wires ! :)
@sidheekali3223
2 жыл бұрын
Thanks ❤ from India 🇮🇳
@yogeeshgarudangiri5148
Жыл бұрын
Very nice presentation...
@MrPress6
Жыл бұрын
Fantastic example thank you
@krishath7085
2 жыл бұрын
Awesome tutorial. Many thanks Joe
@mehboobaliawanaofficial7304
2 жыл бұрын
nice teaching I learned musch more
@bradmoore1247
3 жыл бұрын
Really great, I finally understand why.
@any_one4255
4 жыл бұрын
You cleared my long time doubt so quick... @ motor winding... Y they are connected together
@JoeRobinsonTraining
4 жыл бұрын
Glad the video helped! Stay tuned for more!
@waleedmohi356
3 жыл бұрын
very good,theoretical and practical
@oldgrunger5
4 жыл бұрын
great video bud 😊
@JoeRobinsonTraining
4 жыл бұрын
Cheers matey!
@onurguvener3451
4 жыл бұрын
Great explanation! Thanks!
@JoeRobinsonTraining
4 жыл бұрын
You're welcome, please check out my other videos!
@JMKClassroom
3 жыл бұрын
Hi Joe your explanations are super clear ,can you do a video on a single phase max demand calculation of a building and a three phase max demand of a factory.
@dimitrisblane6368
5 ай бұрын
Thank you.
@billylesnussa5087
3 жыл бұрын
Excellent
@JoeRobinsonTraining
3 жыл бұрын
Thanks very much!
@kruzzah
4 жыл бұрын
Really nice n simple. Plz ur support for my question which is, If it says 3ph generator has 120amps capacity, does it mean that each phase will provide 120amps or each phase will provide 40amps?
@mrcleen70
3 жыл бұрын
Fantastic.
@any_one4255
4 жыл бұрын
Nice teaching methodology
@JoeRobinsonTraining
4 жыл бұрын
Thanks very much!
@malachygallagher4936
Жыл бұрын
Hi Joe. Excellent! Can you do a video on bonded or floating neutrals on generators & if Earth rods are required?(TNCS) Regards mg.
@andersonpinesso2812
3 жыл бұрын
Thanks a lot for very good explanation
@nolwazibridget3716
4 жыл бұрын
Joe thanks for making this video... Can I please get clarity why did u read 8.2A on the neutral when L1 and L2 was on???
@JoeRobinsonTraining
3 жыл бұрын
Great question, stay tuned for a future video. 👍
@okud5850
3 жыл бұрын
@@JoeRobinsonTraining has this video been made?
@Beardmondy67
3 жыл бұрын
.. Splendid vid, good sir,.. I've just been scratching my head after discovering a taped-up blue wire in the connection switch block on a lathe I recently bought, and your vid has pretty much explained the mystery,... I can wire-up the four pin plug and shove it in my static converter with some degree of confidence now,.. :o)
@JoeRobinsonTraining
3 жыл бұрын
Hope it goes well! Stay safe. 😊
@Beardmondy67
3 жыл бұрын
@@JoeRobinsonTraining .. Cheers, Joe,.. The lathe lives !!! Aside from buying a five pin plug instead of a four pin to start with, ( doh ! ) all is good,.. Keep-up the good vids,. Kudos,.. Dan, SW London,..
@shaifsiddique4842
3 жыл бұрын
Nice one...keep going
@randomjack477
4 ай бұрын
About the zero current, Can we think of it in terms Kirchhoff's current law? Not only when at peak values , but also at different points indicated by the graph, where we can add or subtract the 3 phase(r,y,b) values depending on whether it is in the Positive(up/forward) or Negative(down/negative).
@dilshanmadhu
8 ай бұрын
Vary useful information ❤️❤️
@thapelogerald6754
3 жыл бұрын
1.If i may ask, what causes the high/low voltage and how do you solve the problem? 2.What causes shocking taps and how do you resolve it?
@Galmm-ub2dc
2 ай бұрын
I glad if you answer me on a question, why the current was 8.4 amps when l1 and l2 were connected without l3? Thanks in advance 🙏
@argeniokenttejhy9735
2 жыл бұрын
this content is awesome! The heaters will also be depicted as the KCL or Kirchoff Current Law.
@deang5622
Жыл бұрын
No, you don't depict things as Kirchoff's Law. Kirchoff's Current Law is simply an analysis technique to enable you to evaluate the currents in the cables All it says is the sum of the currents entering a node is zero. So you ascribe direction to the current, and that is indicated in diagrams using an arrow, which sadly most electricians don't seem able to do, for some bizarre reason. And you also ascribe a positive or negative value to the magnitude of the current to indicate direction it is flowing in. Currents flowing in a positive, currents flowing out are negative. You can even do it the other way around. It doesn't matter as long as you are consistent.
@johnreymaliao3352
Жыл бұрын
Can you please make a video of 3 phase motor and explain the relation of the current drawn in low- high speed or wye-delta..
@rhodamkabana6583
3 жыл бұрын
thanks joe
@gregoryazuaje5733
2 жыл бұрын
GREAT VIDEO!!!!!!!
@criskramschuster9492
3 жыл бұрын
well done
@lst080956
6 ай бұрын
Thanks very much. Check with you, does RCB without neutral.
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