I plugged a 110V television to a 220V outlet and had it blown in a few seconds, this explains that occurrence that happened more than a decade ago. Thanks Dr. Electrical Guy.
That should never be possible. Wes the neutral missing somewhere? 220v receptacles should have a completely different shape so 120v plugs should never fit
It is really great, easy and direct explanation, once the person understands the idea precisely he would explain it clearly as you did. Thanks for your golden efforts
Wow, one of the best explanations i ever listened on UA-cam. I want to add some practical application of not using neutral wire. For instance in transmission line we can not provide a neutral wire as we don't connect load
After watching this video, I wanted to write this. First, we understand the CURRENT in a simple way. We are having an Over Head Tank at every house, right? From there we are having connections to our bath rooms, kitchen, utility etc. with the pipe line (Plumbing line). Once we open the tap, the water will flow from the Over Head Tank to the tap through the pipe line. We use / consume that water. Consider, you are having a Geyser at your house. It consumes current to operate. If we give some current by turning on the switch (Same as Water in the pipe line to the Tap) with required force, (Voltage) the Geyser will draw / Consume the power (As designed). Wires used in this are the Conductors which carry the current same as pipe line which carries water. Here the Power source would be Transformer same as Over Head Tank for water. We can draw the current as much as we required to our electrical gadgets. (But the transformer can not store the current as we store the water in Over Head Tank, Current comes directly from the Generating Station through Transformer) Example: Geyser Power (P) = 1000 Watts (Consider as Consumption of Water (Quantity) with specified force) Current (I) =? (Consider as Water which you are going to consume) Voltage (V) = 220 V (Consider as Pressure of Water flowing in the Pipe line) Formula: P = V X I That is, 1000 = 220 X I So Current (I) = 1000/220 = 4.5 Amps (Consider, you consumed 4.5 Litre of water) There is No Minus Current as told in this video. (Think about the Water, how will you minus the water?) Neutral Current will be zero if all the 3-Phase current is same. (Balanced) “All the current meeting at junction is Zero” according to Kirchhoff’s Current Law Consider, there are three houses with single phase power supply connection with different phases (R, Y B). House R - Consuming 5Amps House Y - Consuming 8Amps House B - Consuming 10Amps Then the Neutral Current would be √(R2 + Y2 + B2 - RY - RB - YB) √(52 + 82 + 102 - 5X8 - 5X10 - 8X10) √(25 + 64 + 100 - 40 - 50 - 80) √(189 - 170) = √19 = 4.36 Amps So, in this case, the unbalanced 3-Phase load Neutral Current will be 4.36 Amps. The Neutral Current would have been zero, if each Phase current would have 5 or 8 or 10Amps Neutral current will be high if the load is not equal in 3-Phase circuit. But it will be less when compare to each phase Maximum current. So always we use Half of the Phase Cable size for Neutral in 3-Phase loads, considering the balanced load.
Thank you indeed for such a clear explanation of the importance of neutral wire. Would you please advise if presence of an RCD would help and if it would trip off in case there is a loss of neutral wire on three phase supply. Thank you.
In North American practice, the wye point of the primary in wye-delta three phase transformer banks (wye-primary; delta-secondary), is often disconnected from the neutral to balance the secondary voltages. This allows the wye point to "float".
1)Sir at 2:17 how loads will work without neutral wire or without low potential path for each phase. 2) Sir in case of balanced single phase system do we need neutral wire ?
Thanks for sharing. If the neutral wire detected amps value, which is not negligible, can we assume the 3 phase loads are not balanced? Second question, if we found the voltage on each phase is not identical, can we assume there might be a problem with the neutral wire?
Video is cristal clear but could you explain how the risk of unbalanced phases is coped with in distribution networks without neutral ? Like where I live
Thanks for the precious explanation .. Also wanted to know if a single phase RCCB connected to a load will trip if the loads in all the 3 phases are balanced (identical).
Dear sir, i have 3 questions, 1. What will happen if we joint two different transformer neutral wire together 2. What will happen if we connect load phase wire from 1 transformer and neutral with 2nd transformer 3. In large UPS system there is 3 core wire for 3-phase inputs, but out of ups is 3 phase with neutral, how we get this neutral on UPS output
The question is in 220 V single phase system if we remove the neutral wire(meaning we only have hot wires) can the current complete the circuit back to the transformer?
Let me ask a question of removing neutral cable in the system. In case of load are equal in three phase. Can i connect three lamps of the same current, voltage and power?. If i connect it work properly without any damages?. How i connect these connection?.
That was nice and clear explanation, I just have one question in mind, in the unbalance load without neutral, voltages in all three phase will become unbalance too, but where does the unbalance current path back to the source if there is no more neutral conductor.
Dear Sir Thank you I have question: If I conected neutral wire with ground cable and neutral wire cut, is load will continue to work with out any problem? Is voltage and current will stay same? Regards Essam
Sir, I have a question. If I connect unbalanced loads in Delta configuration then there is no opportunity for existing neutral wire. Then what is the voltage across the each load?
Suppose, we take a mcb, connect 3 phases in its input and short the 3 output terminals and turn ON the mcb. What will happen? Will there be a short circuit or the common point of the mcb output will behave like a neutral point?
Sir great explanation.. But i have 2 questions.. 1- Is A transformer of an inverter similar to distribution transformer.. I mean a small tranformer also has a neutral wire or it difference from distribution transformer?? 2- if neutral make balance of each load of a house then why sometimes we face the problems of low or high voltage in our house??
I don't inderstand how extra amps on a load could affect the voltage balance ! I thought that voltage between phases is fix and known and also voltage between each phase and neutral is also fix and known ! Thanks
Yes (I think neutral current will not be more than phase current). In worst case, where waveforms are badly distorted, we can use neutral cable same size as other phase wire.
In a factory with sub-panels and all kinds of loads, you CAN have a fair amount of current between the ground and neutral. Damn near got juiced, the guy I worked with at Maki electric over in Worcester Mass assumed I knew this. I did not, BUT something told me there was a fair amount of current between ground and neutral I checked it out with a wiggy, well over 120 volts.
If there is current in neutral then why dont we get electric shock at neutral? If one says that neutral has 0 potential then what does that actually mean? Aren't we supposed to get phase in neutral too if phase changes in AC current??
Sir I have a doubt typically in India ground and neutral are internally connected and both are earthed So some power from source would go to earth rather than return to power source itself Also why we use two seperate wires nutral and ground instead of single wire as both are the same
But India has many gurus for guidance on the subject. Actually it is the same everywhere I know of America, England, the civilized world and of course India would be included. Sort of like the Common Law we all share. He has explanation of floating neutrals too, FYI.
Wonderful explanation of neutral conductor to Wye transformer.
As usual you supply wonderful information.
Glad it was helpful!
Crystal clear explanation.. somebody give this guy a PhD 🤗
He might have PhD in Electrical Engineering
I plugged a 110V television to a 220V outlet and had it blown in a few seconds, this explains that occurrence that happened more than a decade ago. Thanks Dr. Electrical Guy.
That should never be possible. Wes the neutral missing somewhere? 220v receptacles should have a completely different shape so 120v plugs should never fit
I came to this video while trying to understand how neutral lines work. And now I'm subscribing. 🙂
It is really great, easy and direct explanation, once the person understands the idea precisely he would explain it clearly as you did. Thanks for your golden efforts
Thank you 😊 🙏🏻
I reviewed the lesson a second time (8 months later) naturally even more informative. Thank you.
Dude thank you, I've been struggling with this for a couple years now & you explained it in a way that I almost instantly grasped! Hats off friend!
Glad it was helpful ☺️ Do share and subscribe 😊
Wow, one of the best explanations i ever listened on UA-cam. I want to add some practical application of not using neutral wire. For instance in transmission line we can not provide a neutral wire as we don't connect load
Fantastic video, I finally understood several subtleties of three phase systems in just one short video THANKS
Glad it helped!
I am a Student of Electrical engineering and I love your explanation ❤️❤️
Thanks. Do share and subscribe to my channel ✌🏻✌🏻😊
Very great video. God bless you sir.
Giving summary is fruitful at last
You simply mind blowing sir
Great job! Simple to understand explanation.
I found your channel today and watched 10-12 videos on one stretch, you are truly a gem ❤
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Already done ❤
Thanks 😊
Thank you, I finally understood how the three phase system works
Great 👌 do share and subscribe to my channel ✌🏻🙏
After watching this video, I wanted to write this.
First, we understand the CURRENT in a simple way.
We are having an Over Head Tank at every house, right? From there we are having connections to our bath rooms, kitchen, utility etc. with the pipe line (Plumbing line). Once we open the tap, the water will flow from the Over Head Tank to the tap through the pipe line. We use / consume that water.
Consider, you are having a Geyser at your house. It consumes current to operate. If we give some current by turning on the switch (Same as Water in the pipe line to the Tap) with required force, (Voltage) the Geyser will draw / Consume the power (As designed). Wires used in this are the Conductors which carry the current same as pipe line which carries water. Here the Power source would be Transformer same as Over Head Tank for water. We can draw the current as much as we required to our electrical gadgets. (But the transformer can not store the current as we store the water in Over Head Tank, Current comes directly from the Generating Station through Transformer)
Example:
Geyser Power (P) = 1000 Watts (Consider as Consumption of Water (Quantity) with specified force)
Current (I) =? (Consider as Water which you are going to consume)
Voltage (V) = 220 V (Consider as Pressure of Water flowing in the Pipe line)
Formula: P = V X I
That is, 1000 = 220 X I
So Current (I) = 1000/220 = 4.5 Amps (Consider, you consumed 4.5 Litre of water)
There is No Minus Current as told in this video. (Think about the Water, how will you minus the water?)
Neutral Current will be zero if all the 3-Phase current is same. (Balanced)
“All the current meeting at junction is Zero” according to Kirchhoff’s Current Law
Consider, there are three houses with single phase power supply connection with different phases (R, Y B).
House R - Consuming 5Amps
House Y - Consuming 8Amps
House B - Consuming 10Amps
Then the Neutral Current would be
√(R2 + Y2 + B2 - RY - RB - YB)
√(52 + 82 + 102 - 5X8 - 5X10 - 8X10)
√(25 + 64 + 100 - 40 - 50 - 80)
√(189 - 170) = √19 = 4.36 Amps
So, in this case, the unbalanced 3-Phase load Neutral Current will be 4.36 Amps.
The Neutral Current would have been zero, if each Phase current would have 5 or 8 or 10Amps
Neutral current will be high if the load is not equal in 3-Phase circuit. But it will be less when compare to each phase Maximum current. So always we use Half of the Phase Cable size for Neutral in 3-Phase loads, considering the balanced load.
Very clear explanation.thank you very much sir.
Thank you indeed for such a clear explanation of the importance of neutral wire.
Would you please advise if presence of an RCD would help and if it would trip off in case there is a loss of neutral wire on three phase supply.
Thank you.
Thank-you sir for super explaination
You Made that easy for me❤️❤️
In North American practice, the wye point of the primary in wye-delta three phase transformer banks (wye-primary; delta-secondary), is often disconnected from the neutral to balance the secondary voltages. This allows the wye point to "float".
Explaining removed all doubts in my head❤️ tysm💯
The most clear cut explaination I've ever seen 🔥🔥❤️👍👍
Thanks 😊 do share and subscribe to my channel ✌🏻👍🏻
So nice and educative sir
Well done Sir. You have cleared my doubts which have troubled, me for so long. Thank you once again.
😊 great. Do share and subscribe to my channel ✌🏻✌🏻
@@GauravJ already done
Bro That explanation was very easy to follow
Thank You!
Couldnt get much better explaination
Very good demo and explantion what happens if earth and nutral are connected to avoid earth missing in supply
Cool. Explain in simple way
Sir you are a genius. Much appreciated your videos as u have the art of teaching
Thank you, very clear presentation.
Understandable with ur explanation
Good presentation n explanation
Just one question where does the neural current go in single phase system
Excellent practical explanation keeping theory as base. Good!
Thank you 😊 do share and subscribe 😇
You are doing amazing work
Sir,ur giving clear explanation to us about electrical topics and thank you soo much sir for your videos
Which are very useful for us.
We need this kind of teachers who have all practical knowledge
Great video Gaurav, thank you.
Great illustrations .
Definitely superb 👍
Wonderful Sir
Good, informative video!
Mind-blowing sir
Bang on target 🎯👏 👌, great explanation sir
Thanks 👍🏻 do share and subscribe to my channel 😊✌🏻
Superb explanation...
Good explanation. Pl. explain about Neutral and Earth in AC transmission.
Sure we'll try for that. Do share the video 😊
Always great videos.Im learning alot Many Thanks. Gaurav J
Glad to hear that
Well explained. Very valuable information.
Thanks 😊
Sir your way of teaching is good please make a video on floating neutral
Thanks. Do share and subscribe to my channel ☺️✌🏻
@@GauravJ Also make a video on floating neutral sir
1)Sir at 2:17 how loads will work without neutral wire or without low potential path for each phase.
2) Sir in case of balanced single phase system do we need neutral wire ?
Excellent vedio explaination with technical terms.
Can you please make a new vedio on VFD and Soft starter programming and troubleshooting.
Thanks
Thank you🙏🙏
Please Make a video on Difference between lbs and vcb???
Very nice information , thank u sir
Very good explanation
Thank you Aslam. Do subscribe to my channel and share the video ✌🏻🙏
Hi
Again thank you for your technical support.
Now we want to understand what happens when batteries on telecom site are not fully recharged.
Thank you
Thanks for sharing. If the neutral wire detected amps value, which is not negligible, can we assume the 3 phase loads are not balanced? Second question, if we found the voltage on each phase is not identical, can we assume there might be a problem with the neutral wire?
Video is cristal clear but could you explain how the risk of unbalanced phases is coped with in distribution networks without neutral ? Like where I live
Very clear. Thank you Sir !
You’re welcome 😊 do share and subscribe to my channel ✌🏻😊
Thanks for the precious explanation ..
Also wanted to know if a single phase RCCB connected to a load will trip if the loads in all the 3 phases are balanced (identical).
Nice explanation sir!
Dear sir,
i have 3 questions,
1. What will happen if we joint two different transformer neutral wire together
2. What will happen if we connect load phase wire from 1 transformer and neutral with 2nd transformer
3. In large UPS system there is 3 core wire for 3-phase inputs, but out of ups is 3 phase with neutral, how we get this neutral on UPS output
Great explanation....at 1:50 isn't it at 210 degrees?
Awesome video mate thank you !!!
Thanks 😇 do share and subscribe 🙂
Thank you bro, super clear.
Thank you sir.
excellent video...
The question is in 220 V single phase system if we remove the neutral wire(meaning we only have hot wires) can the current complete the circuit back to the transformer?
Let me ask a question of removing neutral cable in the system. In case of load are equal in three phase. Can i connect three lamps of the same current, voltage and power?. If i connect it work properly without any damages?. How i connect these connection?.
Nice explanation sir.
One question. Sir.
Difference between neutral wiring and grounding..
Thanks. Do ahare and subscribe 🙏✌🏻 I'll try to make a video on that
That was nice and clear explanation, I just have one question in mind, in the unbalance load without neutral, voltages in all three phase will become unbalance too, but where does the unbalance current path back to the source if there is no more neutral conductor.
Good point
Good question
Thank you 😊 sir 😍
Can we connect the equipment ground on devices to neutral instead of sending it to the ground rod?
Nice explain, can you explain how to calculate single phase voltage on a unbalanced wye with floating neutral
Dear Sir
Thank you
I have question:
If I conected neutral wire with ground cable and neutral wire cut, is load will continue to work with out any problem?
Is voltage and current will stay same?
Regards
Essam
You should never never never connect a neutral to ground
Do not ever connect neutral to ground. You can very easily kill someone
Sir, I have a question. If I connect unbalanced loads in Delta configuration then there is no opportunity for existing neutral wire. Then what is the voltage across the each load?
Suppose, we take a mcb, connect 3 phases in its input and short the 3 output terminals and turn ON the mcb. What will happen? Will there be a short circuit or the common point of the mcb output will behave like a neutral point?
Pls make a video for star-Delta startor control panel for high power motor
could you please take a video of controller explanation. with examples like PID,DYNAmic etc
Could you please make a video about Phase Shift Transformer (the operation principles, usage..)
Sure. I’ll try!
I enjoyed, loved it ❤️💖❤️💖❤️
Glad you enjoyed it
Pls make video on how unbalanced loads impacts neutral size and calculation of unbalanced N current formula with load angle or sequence
Perfect video 👌. simply super
Thank you so much 🙂
Sir great explanation.. But i have 2 questions..
1- Is A transformer of an inverter similar to distribution transformer.. I mean a small tranformer also has a neutral wire or it difference from distribution transformer??
2- if neutral make balance of each load of a house then why sometimes we face the problems of low or high voltage in our house??
Good video. Suggestion, put three phase systems somewhere in the title, as it is not applicable in single phase systems.
Nice topic sir 😍
what a great explanation
Thanks 😊 Do share and subscribe to my channel ✌🏻
@@GauravJ we are looking for more videos sir,i will share this video with my friends
Sure. New videos are coming!!
Sir pls explain....Why does current not decrease on passing through a resistance
I don't inderstand how extra amps on a load could affect the voltage balance !
I thought that voltage between phases is fix and known and also voltage between each phase and neutral is also fix and known !
Thanks
good explanation
what about non-linear inductive loads & harmonics in the system, can we use the neutral wire size half the phase size
Yes (I think neutral current will not be more than phase current). In worst case, where waveforms are badly distorted, we can use neutral cable same size as other phase wire.
In a factory with sub-panels and all kinds of loads, you CAN have a fair amount of current
between the ground and neutral. Damn near got juiced, the guy I worked with at Maki electric
over in Worcester Mass assumed I knew this. I did not, BUT something told me there was a
fair amount of current between ground and neutral I checked it out with a wiggy, well over 120
volts.
Thank you sir❤️🙏
Do share and subscribe 😊
Very good
If there is current in neutral then why dont we get electric shock at neutral?
If one says that neutral has 0 potential then what does that actually mean? Aren't we supposed to get phase in neutral too if phase changes in AC current??
Best ever👍
Sir but why some designer choosed the neutral to be 2x larger size than the size of line wires.? I was confused on that...
Sir I have a doubt typically in India ground and neutral are internally connected and both are earthed
So some power from source would go to earth rather than return to power source itself
Also why we use two seperate wires nutral and ground instead of single wire as both are the same
But India has many gurus for guidance on the subject. Actually it is the same everywhere I know of America, England, the civilized world and of course India would be included. Sort of like the Common Law we all share. He has explanation of floating neutrals too, FYI.
U r videos are interesting
Yes ur right
Nice video sir