How Three Phase Electricity works - The basics explained
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Date: 2023-11-17
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Comments and reviews: 30
CheckYourFax
For people who want to know: The reason computers only need single-phase power is because the Power Supply Unit has capacitors which will keep the converted DC power flowing into the chips. This is also why anything that requires constant power is DC. For equipment that need DC, there are three reasons why AC would not work: 1) the gaps in 3-phase power would cause issues in certain equipment2) The voltage needs to be constant 3) AC usually doesn't have a stable enough voltage in most homes. During congestion, the frequency can also drop.
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For people who want to know: The reason computers only need single-phase power is because the Power Supply Unit has capacitors which will keep the converted DC power flowing into the chips. This is also why anything that requires constant power is DC. For equipment that need DC, there are three reasons why AC would not work: 1) the gaps in 3-phase power would cause issues in certain equipment2) The voltage needs to be constant 3) AC usually doesn't have a stable enough voltage in most homes. During congestion, the frequency can also drop.
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jony
What a brilliant explanation of every moment. Speed of electrons in AC current will remain as instantaneous speed after adding more phases? One more question, Does the purpose of adding more phases is to keep the speed of the electrons at uniform rate (constant rate) the moment the electrons start slowing down from the 90 angel to the neutral position (the point of 180 degree? Thanks if someone can reply!
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What a brilliant explanation of every moment. Speed of electrons in AC current will remain as instantaneous speed after adding more phases? One more question, Does the purpose of adding more phases is to keep the speed of the electrons at uniform rate (constant rate) the moment the electrons start slowing down from the 90 angel to the neutral position (the point of 180 degree? Thanks if someone can reply!
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EvilSapphireR
In bike the alternator generates 3 phase AC current and the Regulator Rectifier produces constant 14 volt DC voltage from it. So is the Regulator Rectifier unit's wiring in such a way that in gets input from all the 3 phases and regulates/rectifies whichever phase has enough voltage (bright light example in the video) at the time?
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In bike the alternator generates 3 phase AC current and the Regulator Rectifier produces constant 14 volt DC voltage from it. So is the Regulator Rectifier unit's wiring in such a way that in gets input from all the 3 phases and regulates/rectifies whichever phase has enough voltage (bright light example in the video) at the time?
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Siddart
Thank you for making this. A question on the strength of the magnetic field for a bar magnet. At 1: 58 you mention that the field is weakest at the poles. But from what Ive read, a bar magnet has the strongest magnetic field at the poles. Hence why earths magnetic field is weakest at the equator. Could you clarify this confusion?
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Thank you for making this. A question on the strength of the magnetic field for a bar magnet. At 1: 58 you mention that the field is weakest at the poles. But from what Ive read, a bar magnet has the strongest magnetic field at the poles. Hence why earths magnetic field is weakest at the equator. Could you clarify this confusion?
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Don
The illustration suggests that the current is flowing through both the black and white wires, If you were to touch the common wire in a circuit is it the sucking electricity out of you? Similar question in a 3 phase panel there's 3 lines coming in but only one common. Is the common then a negative 3 phase?
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The illustration suggests that the current is flowing through both the black and white wires, If you were to touch the common wire in a circuit is it the sucking electricity out of you? Similar question in a 3 phase panel there's 3 lines coming in but only one common. Is the common then a negative 3 phase?
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Richard
In a country like the UK, the whole countrys AC frequency is the same everywhere. So how do they match the frequency of every generator, so that they are the same?
I. e. How when switching on and adding a new generator do they match the frequency and phases so that they match?
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In a country like the UK, the whole countrys AC frequency is the same everywhere. So how do they match the frequency of every generator, so that they are the same?
I. e. How when switching on and adding a new generator do they match the frequency and phases so that they match?
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Sunny
If you use 3 phase design but the center is copper and doesn't spin use electricity to turn the magnets off and on in a circular pattern really fast like almost continuous combine this with a nickel plate charged negatively with ions that will attract positive ions out of the air.
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If you use 3 phase design but the center is copper and doesn't spin use electricity to turn the magnets off and on in a circular pattern really fast like almost continuous combine this with a nickel plate charged negatively with ions that will attract positive ions out of the air.
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Mohsen
woth equal resistive loads on each phase, the total power delivered is always constant. I did not fully get what you meant by 3 phase is a good compromise. i. e. if the lamps are only resistve and equal loads the total power delivered to the at each moment in time is constant.
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woth equal resistive loads on each phase, the total power delivered is always constant. I did not fully get what you meant by 3 phase is a good compromise. i. e. if the lamps are only resistve and equal loads the total power delivered to the at each moment in time is constant.
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Big
I have had 3 phase power explained to me multiple times by licensed electricians, and this video was the first time that someone explained how the shape of the rotating EM field correlates to the angle with which the phase wires are arranged around it, and why.
Thank you.
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I have had 3 phase power explained to me multiple times by licensed electricians, and this video was the first time that someone explained how the shape of the rotating EM field correlates to the angle with which the phase wires are arranged around it, and why.
Thank you.
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Arif
I am still confused why we need 3 phase for large appliances like AC? According to this video, 3 phase is used to reduce the chances of 0 power Situation. But yet it can be used since we won't be able to identify it with our human eyes. Then why going for 3 phase?
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I am still confused why we need 3 phase for large appliances like AC? According to this video, 3 phase is used to reduce the chances of 0 power Situation. But yet it can be used since we won't be able to identify it with our human eyes. Then why going for 3 phase?
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John
Why not just put the magnet in the strongest position and leave it there and let all the electrons flow in one direction? Why must we rotate it and constantly change the polarity?
Does the magnet have to be moving to make the electrons flow?
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Why not just put the magnet in the strongest position and leave it there and let all the electrons flow in one direction? Why must we rotate it and constantly change the polarity?
Does the magnet have to be moving to make the electrons flow?
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Эльмира
In the video about alternating currents basic (time 1: 24) you explained in a opposite way about most intense and least intense of the magnetic fields. So can you explain when will be maximum and minimum magnetic fields intense?
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In the video about alternating currents basic (time 1: 24) you explained in a opposite way about most intense and least intense of the magnetic fields. So can you explain when will be maximum and minimum magnetic fields intense?
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Chamila
I feel that maximum voltage is generated when the flux lines are cut perpendicularly by the coil. According to the video maximum voltage is generated flux going parallel to the coil. Any way this video is very useful. Thank you!
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I feel that maximum voltage is generated when the flux lines are cut perpendicularly by the coil. According to the video maximum voltage is generated flux going parallel to the coil. Any way this video is very useful. Thank you!
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Pedro
It is a pity that there are scientific errors in the explanation, because the images are very good. The N and S poles are placed in the wrong place; the magnetic field is maximum where the lines are closest; etc, etc.
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It is a pity that there are scientific errors in the explanation, because the images are very good. The N and S poles are placed in the wrong place; the magnetic field is maximum where the lines are closest; etc, etc.
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LOSGAMERVERAtv
I have a question, when do you define that the positive side is pushing or if its the negative pulling, I mean when one is acting on one side, isnt the other half acting on the other coil?
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I have a question, when do you define that the positive side is pushing or if its the negative pulling, I mean when one is acting on one side, isnt the other half acting on the other coil?
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smallzlmob
Can someone explain to me why in some other animations the magnet rotates counter clockwise and in this one it rotates clockwise? which way does it rotate or can it rotate both ways?
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Can someone explain to me why in some other animations the magnet rotates counter clockwise and in this one it rotates clockwise? which way does it rotate or can it rotate both ways?
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Megs
I always wanted to study electricity. I've worn many hats over the years and at 42, I'm finally able to take the time and dive in. THANK YOU for this video and audio descriptions.
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I always wanted to study electricity. I've worn many hats over the years and at 42, I'm finally able to take the time and dive in. THANK YOU for this video and audio descriptions.
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Soumitra
Actually electric is current in which we saw the machnasim part of during the mention part of the follow the reverse in direct and indirect that flow the -and positive motion.
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Actually electric is current in which we saw the machnasim part of during the mention part of the follow the reverse in direct and indirect that flow the -and positive motion.
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Karma1953
This is the best video i have seen on this topic. its so perfect, short, crisp yet very powerful. KEEP UP THE GOOD WORK MAN! YOU ARE MAKING A STUDENTS LIFE FAR EASIER.
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This is the best video i have seen on this topic. its so perfect, short, crisp yet very powerful. KEEP UP THE GOOD WORK MAN! YOU ARE MAKING A STUDENTS LIFE FAR EASIER.
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Enter
HVAC mechanic in training here. None of my coworkers or teachers can explain how three phase power works. I now understand how three phase power works.
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HVAC mechanic in training here. None of my coworkers or teachers can explain how three phase power works. I now understand how three phase power works.
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JP
I have my degree in Electrical Engineering. I watched your video and I think you did a great job explaining a difficult subject to the general public.
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I have my degree in Electrical Engineering. I watched your video and I think you did a great job explaining a difficult subject to the general public.
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Troy
I am not an electrician, nothing close, never been interested in electrical work in my entire life, but I still love watching these videos
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I am not an electrician, nothing close, never been interested in electrical work in my entire life, but I still love watching these videos
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Neil
in one of your other videos you said the magnetic field was strongest at either end of the poles, but in this one you show the opposite?
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in one of your other videos you said the magnetic field was strongest at either end of the poles, but in this one you show the opposite?
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Davin
Dont most houses have 2 phase? Like for dryers and AC units? Only asking because at the end houses were said to have only one phase.
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Dont most houses have 2 phase? Like for dryers and AC units? Only asking because at the end houses were said to have only one phase.
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Hungry
Wow man, a concept I've been struggling with for months easily tracked with simple illustrations and masterful wording, cheers!
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Wow man, a concept I've been struggling with for months easily tracked with simple illustrations and masterful wording, cheers!
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Ben
I typed in 3 phase electricity explained the first five videos were a math class. This is exactly what Im looking for. Thank you
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I typed in 3 phase electricity explained the first five videos were a math class. This is exactly what Im looking for. Thank you
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Ish
I never really understood 3 phase and when I asked I still didnt understand but now I have a better idea and understand it now
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I never really understood 3 phase and when I asked I still didnt understand but now I have a better idea and understand it now
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Isaac
where's the video that explains how the 3-phase power is ultimately delivered to a house which seems to have 1-phase power?
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where's the video that explains how the 3-phase power is ultimately delivered to a house which seems to have 1-phase power?
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TheSwiftMagician
Excellent explanation of three phase power, as well as Hertzs relationship to it.
Keep up the good work!
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Excellent explanation of three phase power, as well as Hertzs relationship to it.
Keep up the good work!
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Sanjay
Its not really the speed of the electrons that fluctuates in sine fashion. It is the amperage, is it not.
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Its not really the speed of the electrons that fluctuates in sine fashion. It is the amperage, is it not.
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