Thanks for taking the time to produce such a clear, instructive guide. I thought I was buggered when I lost the wiring diagram for my motor. Your generosity is appreciated.
Just want to thank you for the very good explanation in identifying and correctly connecting the coils, capacitors with power... well done it was enough and all the information I needed to successfully connect mine... thanks.
Hello Mr Jean B thank you for your educating video once again, I've almost all of your youtube videos. I just want to ask you to do a video of wiring a Distribution Board (normal House) with geyser, stove, plugs, and lights. Once again thank you for the Knowledge.
The reason a capacitor used in induction motors in an induction motor is to make motor start rotating. An induction motor when it is powered up it will not turn but vibrates. The motor can start in either direction CW or CCW by rotating the shaft by hand. , to fix this problem an additional coil is built into the motor to make sure the motor start in the correct direction (here it is called it starting coil). A capacitor added to the starting coil to generate starting torque in the motor which later disconnected by a mechanical switch. short explanation but you can research it yourself.
Hi, this is very useful. My single phase motor wiring is not labelled. I think my running coil is connected to my starting coil and also my so called 'V1' is connected in series. Any ideas how I go about wiring?
I hooked the motor up this way and it works but it seems to me that it works a little too warm. I don't know if that's normal. I'm going to check if the cap values are the right ones.
I picked up an old 1/4hp split phase I believe it to be? It has only 3 terminals and 1 Earth and with the centrifugal switch but no capacitors?.... Can it be reversed as simply as we've spoken about already here? With just the start coil reversed? Or is it different altogether? L connects to both a Red and Black on a single terminal. N connects a Black with a Bridge across to a Red in the centre. I gave it a service and put it back together. It was running true for my needs so I did not check the Ohms to see which coil was which... But now I discover that I'll really need to have the pulley 180deg from my original plan so the motor will need reversing. Hope you can give me some more good advice.... I like certainty with all things electrical. Thanks.
Hi, i have a single phase motor connected with an inverter but it doesn't have a capacitor, if i need to disconect the motor from the inverter do i need to install a capacitor on the motor? Thanks.
I have been looking all over YT for this information. Thank you very much, great video. My motor has it's wires disconnected I have no idea were they go. To complicate things even further it has three cap, one has start written on it, the other two has 15uf I assume these are for run. Why are there two run capacitors? Can anybody help me?
Hi Geoff Does the nameplate on the motor state 3 capacitors or just 2? Thevtwo capacitors might have been used as a single langer one when connected together. Do you have 6 wires? What are the resistance between each pair? That will help identify the coils and centrifugal switch.
Lesson learned.. Thnk you.. Question : what is the usual running coil resistance? Checked mine and it's 15M ohms.. Is that right? Thank you.. I hope you could enlighten me
Hi Jean . I have just bought replacement motor for a compressor and it came pre-wired. However the set up is not the same as yours from what I can tell. can you review it and comment as all I should have to do is connect the live and neutral supply? I really do not want to compromise the capacity or motor . Let me know if I can contact you.
Hi, on 3:16 you show a connection diagram, my single phase motor has one on the front but it has two Lines(L) instead of one L and one N. How should I connect this. It has a start capacitor. It is a Siemens .75 HP motor.
Thanks for a great video, useful information. I have one question: Under the circuit diagram you provided, the centrifugal switch only cuts out the START CAP while the START COIL remains in play when the motor is running. Are you certain that this is correct? Shouldn't the RUN CAP go between Z1 and U2 (N), so that the centrifugal switch cuts out the START CAP and the START COIL?
Thanks for the compliment. That might be true for a capasitor start motor that only uses one capasitor. This is a capasitor run motor that uses two capasitors. If you are using a motor with only one capasitor be sure to search for a diagram with only one capasitor as it wil differ from this one.
for a 3 wires ac motor (common wire, start and run winding) with one capacitor (for starting) which wire should be plugged to capacitor? is it right to plug the common from the motor to neutral, live to capacitor which the other wires are plugged to the two terminal of the capacitor? or live to common and neutral to capacitor?
I connected the same, but my motor is rotating in both direction clockwise and counterclockwise direction could you please guide me what is the problem Thanks
Hi Solo. That is very difficult to say without being there at your installation. A common problem is voltage drop. That is where a cable is run for a long distance and the cable thickness is not adequate for the loads connected. The cable might be the correct size for the amps but not for the voltage drop over a great distance,that is when you get a dip/flikker in the lights. This is only guesswork on my part,not being able to test myself...
hello. What are the data of the motor: HP, V, A, Hz, Poles, etc? I'am rewinding a motor similar, but I have not the data, only I know that It´s a 3 hp motor. I need the rating of de run and start capacitor, and the voltage. If you have a data of this motor, I´ll be gratefull with you. Thanks a lot.
Hi Artan For a 3phase motor there would be 3 coils and 6 wires. For a single phase motor with 6 wires, there is 2 coils with 2 wires each and 2 wires of the centrifugal switch that switches off the start coil when it reaches a specific RPM.
This is not a three phase motor? But it has 3 windings, so he is running a 3 phase motor with a single phase power supply, not running a single phase motor, corre t me if I'm wrong plz
Hi Marco. The only way for me and you to know will be to follow the steps in the video. That is the only way unless there is a drawing somewhere on the motor you can compare to my drawing.
Why do you even call it a run capacitor? It is not connected to the running winding anyway. The capacitor with a lower capacitance is connected to the circuit just to provide provide split phase.
I have the exact same connections and a start and run cap. If I connect it up like you have it will start then slow almost to a stop then start again over and over. If I follow the wiring diagram I found on the net for my motor it's won't start it just struggle to even turn. Motor is YL90L-2. My start cap is 200uf, the run cap is 40uf. U1 and u2 is 1.7 ohms, w1(z1) and w2(z2) is 2.0ohms. V1 and v2 is closed circuit 0 ohms. Its a brand new motor. I also tried another wiring arrangement and it ran to about 30 psi for 2 minutes before it started slowing and then accelerating cycling. I just can't believe there isn't a proper diagram that I can find showing everything the connections the caps where they connect for this motor. The useless diagram just show the terminals and links for cw ccw, no mention where to put the caps. 😢
@@pazzy4501I think Z1-Z2 is just one continuous line. It just means the coil starts at Z1 and ends at Z2 the same to u1-u2 and v1-v2. So even if z1 and z2 are reversed it makes no difference. I stand to be corrected kindly we are here to learn
@Le_VisN yeah you are right, it's just he swapped the diagram from what he actually did, confusing every body and he aslo should be more clear about the centrifugal switch wires as well, the video is a bit far and the connections are not clear
As comnents below a small contribution... if I'm not mistaking z1-z2 and u1-u2 wireing Order might differ as it may change the rotation sense. Correct me if I'm wrong... that's what I've been looking to find out by watching the video as
A great video and stopped my capacitor bursting. One thing I’d like to know, is how you would get a motor like this to be able to go clockwise and anti-clockwise wt the flick of a switch.
Can you make a video on how to replace a mechanical centrifugal starting switch to an electronic centrifugal starting switch. On this same type of motor.
sir can i ask a question? in d winding connection wer is d one who connect is in the line d begging or the ending winding og the motor, both running and starting?
Understood. Your explanation is simple and straightforward. Like that
Thanks for taking the time to produce such a clear, instructive guide. I thought I was buggered when I lost the wiring diagram for my motor. Your generosity is appreciated.
Same here
Just want to thank you for the very good explanation in identifying and correctly connecting the coils, capacitors with power... well done it was enough and all the information I needed to successfully connect mine... thanks.
Finally a clear video!! Well done on explaining it in basic terms
Wish I see this when I was at my unit
thank you for this neat and clear practical connection and information
Nice content, clear and easy to understand
you are very good at this. Thank you for taking time to make the videos.
Hello Mr Jean B thank you for your educating video once again, I've almost all of your youtube videos. I just want to ask you to do a video of wiring a Distribution Board (normal House) with geyser, stove, plugs, and lights. Once again thank you for the Knowledge.
Thanks Michael.
Will try and do that,good idea!
@@p0we111 Thank You
Very clear explanation bro, thank you so much!
This is Very clear and straight.
Sir please, what could be the cause of a single phase motor that suddenly dropped in speed
Thanks for good information it's helpful for me
wow incredible explanation sir thank you so much
Best explanation. Now how to contact on a panel
The reason a capacitor used in induction motors in an induction motor is to make motor start rotating. An induction motor when it is powered up it will not turn but vibrates. The motor can start in either direction CW or CCW by rotating the shaft by hand. , to fix this problem an additional coil is built into the motor to make sure the motor start in the correct direction (here it is called it starting coil). A capacitor added to the starting coil to generate starting torque in the motor which later disconnected by a mechanical switch. short explanation but you can research it yourself.
As to my knowledge, you are right :)
Best explanation. You have a follow up in me for sure
I love the South African accent
The following is correct: (1) Running Winding + Starting Winding + Neutral (2) Running Winding+ Starting Coil +Running Coil +Phase (3) Starting Winding + Running Coil+ Centrifugal Clutch (4) Starting Coil + Centrifugal Clutch
Thanks for your sharing it with us. This is a great tutorial and very informative...
dl
Hi, this is very useful. My single phase motor wiring is not labelled. I think my running coil is connected to my starting coil and also my so called 'V1' is connected in series.
Any ideas how I go about wiring?
Thank you for smart explanation .
Thank you very helpful
Thanks that was useful!
Would that diagram be the same if it were a 220v motor obviously replacing the neutral for a second 120v wire?
Nice work
I hooked the motor up this way and it works but it seems to me that it works a little too warm. I don't know if that's normal. I'm going to check if the cap values are the right ones.
I picked up an old 1/4hp split phase I believe it to be? It has only 3 terminals and 1 Earth and with the centrifugal switch but no capacitors?.... Can it be reversed as simply as we've spoken about already here? With just the start coil reversed? Or is it different altogether? L connects to both a Red and Black on a single terminal. N connects a Black with a Bridge across to a Red in the centre. I gave it a service and put it back together. It was running true for my needs so I did not check the Ohms to see which coil was which... But now I discover that I'll really need to have the pulley 180deg from my original plan so the motor will need reversing. Hope you can give me some more good advice.... I like certainty with all things electrical. Thanks.
Hi, i have a single phase motor connected with an inverter but it doesn't have a capacitor, if i need to disconect the motor from the inverter do i need to install a capacitor on the motor? Thanks.
thank you . for every motor do we have to use capacitor for run. I have 3.7 kw motor but I use start capacitor please
I noticed the Green/Yellow wire coming in was not connected to ground inside the casing of motor, so it is not required?
I have been looking all over YT for this information. Thank you very much, great video. My motor has it's wires disconnected I have no idea were they go. To complicate things even further it has three cap, one has start written on it, the other two has 15uf I assume these are for run. Why are there two run capacitors?
Can anybody help me?
Hi Geoff
Does the nameplate on the motor state 3 capacitors or just 2? Thevtwo capacitors might have been used as a single langer one when connected together.
Do you have 6 wires?
What are the resistance between each pair? That will help identify the coils and centrifugal switch.
Jean B thank you very much for your help. I will check this out tomorrow 12/11.
Lesson learned.. Thnk you.. Question : what is the usual running coil resistance? Checked mine and it's 15M ohms.. Is that right? Thank you.. I hope you could enlighten me
Hi. It will depend on the size of your notor.
15MΩ is an open circuit- you have a broken wire or broken connection somewhere in that coil. The run coil resistance should be low - around 5Ω to 10Ω
Its very good video, which is useful to know how to identify motor winding & connections.
Its helpful for all. Thanks
I tested one set of terminals and had 0.00 resistance. Would centrifugal switch be that low?
great article....
Hi Jean . I have just bought replacement motor for a compressor and it came pre-wired. However the set up is not the same as yours from what I can tell. can you review it and comment as all I should have to do is connect the live and neutral supply? I really do not want to compromise the capacity or motor . Let me know if I can contact you.
with this arrangement of the capasitors... can rotation direction be reversed only swab the terminal link?
Hi, on 3:16 you show a connection diagram, my single phase motor has one on the front but it has two Lines(L) instead of one L and one N. How should I connect this. It has a start capacitor. It is a Siemens .75 HP motor.
Thanks for a great video, useful information.
I have one question: Under the circuit diagram you provided, the centrifugal switch only cuts out the START CAP while the START COIL remains in play when the motor is running.
Are you certain that this is correct?
Shouldn't the RUN CAP go between Z1 and U2 (N), so that the centrifugal switch cuts out the START CAP and the START COIL?
Thanks for the compliment.
That might be true for a capasitor start motor that only uses one capasitor. This is a capasitor run motor that uses two capasitors.
If you are using a motor with only one capasitor be sure to search for a diagram with only one capasitor as it wil differ from this one.
Hi Jean, dunno if I missed it in the video, is there a way to reverse the direction the motors running?
Hi Car
Just change around the start coil polarity. (just flip it around)
@@p0we111 it works! What a legend!
Thank you so much for this video. just had to repair such a motor. this video was god sent . Hi 5 :)... however, how do you change rotation?
Glad to hear.
You have to change the polarity of the starting coil.
Thank you. Much appreciated
Thank you very much
for a 3 wires ac motor (common wire, start and run winding) with one capacitor (for starting) which wire should be plugged to capacitor? is it right to plug the common from the motor to neutral, live to capacitor which the other wires are plugged to the two terminal of the capacitor? or live to common and neutral to capacitor?
I connected the same, but my motor is rotating in both direction clockwise and counterclockwise direction could you please guide me what is the problem
Thanks
Thanks
sir, how will i remove the problem of fluctuation during starting? i noticed during starting the lights will fluctuate.
Hi Solo. That is very difficult to say without being there at your installation. A common problem is voltage drop.
That is where a cable is run for a long distance and the cable thickness is not adequate for the loads connected.
The cable might be the correct size for the amps but not for the voltage drop over a great distance,that is when you get a dip/flikker in the lights.
This is only guesswork on my part,not being able to test myself...
@@p0we111 thank you for this tip. i might try replacing the cable. i am also considering the possibility of installing a soft start module..
Jean B. Thank you for the information. It's all I need.
hello. What are the data of the motor: HP, V, A, Hz, Poles, etc?
I'am rewinding a motor similar, but I have not the data, only I know that It´s a 3 hp motor.
I need the rating of de run and start capacitor, and the voltage. If you have a data of this motor, I´ll be gratefull with you. Thanks a lot.
Thank you very much. Explaining very simply and clearly.
how do you change direction on this motor?
So you conect start with run with live and conect another start with cental s and lower capsitor . and run with other swith with hi capsitor am i righ
Kept saying doesnt matter which way wires go surely would run backwards but could be wrong
Nice video
There are three coil in the motor so the 6 wires with the diferent active rezistence shoul be included
Hi Artan
For a 3phase motor there would be 3 coils and 6 wires.
For a single phase motor with 6 wires, there is 2 coils with 2 wires each and 2 wires of the centrifugal switch that switches off the start coil when it reaches a specific RPM.
Does the centrifugal switch have polarities please?
Hi. No it does not matter which way you connect the wires on the switch.
Thanks much sir
is that 3 phase run to single phase
This is a 3 phase motor not a single phase. It seems as if it's only me and you that can see that.
Very clear explanation kundos
good video
This is not a three phase motor? But it has 3 windings, so he is running a 3 phase motor with a single phase power supply, not running a single phase motor, corre t me if I'm wrong plz
I tought 3 phase motors were the ones to have 6 terminals
Hey just looking for some help.
I didn't get about centrifugal switch how it get on and off
Hi Khalid. Its an automatic switch. It is located inside the motor.
my single phase motor says D1, d2 , d3, d4, how to know which are the same in the u1 u2 z1 z2?
Hi Marco.
The only way for me and you to know will be to follow the steps in the video.
That is the only way unless there is a drawing somewhere on the motor you can compare to my drawing.
Fabulous
How to connect reverse forward
Hi.
Just change the polarity of the START coil (just flip it around)
Or just switch the starting capacitor, After 3 seconds of your life will be spent waiting to turn it off. I know three seconds is a long time.
Why do you even call it a run capacitor? It is not connected to the running winding anyway. The capacitor with a lower capacitance is connected to the circuit just to provide provide split phase.
Hello. Thanks for video. Do you have email? I have some questions for you about this topic...
thank god its not in hindi
:) Man I had a good laugh just now!
Y not strat
But this is a 3 phase motor, not a 1 phase.
Nope 1ph.
ok
5
This is a 3 phase motor and not a single phase
Hi. Can you explain why you say its a 3phase motor and not single phase if it only runs on single phase?
Best explanation about this I've seen. Love that you leave the circuit diagram on screen - really helpful. Thanks.
Vrey good welcome sorrey to thing me
@@jollyscaria1922 xacwdsss
Thank you very much
I have the exact same connections and a start and run cap. If I connect it up like you have it will start then slow almost to a stop then start again over and over. If I follow the wiring diagram I found on the net for my motor it's won't start it just struggle to even turn.
Motor is YL90L-2.
My start cap is 200uf, the run cap is 40uf. U1 and u2 is 1.7 ohms, w1(z1) and w2(z2) is 2.0ohms. V1 and v2 is closed circuit 0 ohms. Its a brand new motor. I also tried another wiring arrangement and it ran to about 30 psi for 2 minutes before it started slowing and then accelerating cycling. I just can't believe there isn't a proper diagram that I can find showing everything the connections the caps where they connect for this motor. The useless diagram just show the terminals and links for cw ccw, no mention where to put the caps. 😢
❤❤❤❤❤❤❤❤❤❤❤❤❤❤
thank you for that sharing
Oh my goodness. thank you so much. It's all clear to me now. Thank you for explaining it so clearly.
Good teaching
i believe you have connected u1 with z2 and v1 with z1 wich is not as same as the schimatic.. there is thome thing wrong you have doe...
Noted this too. How he connected is different from the diagram. Am not sure but would the diagram's connection would result in a change in direction?
@@olivermaina1982 maybe, also he is not mentioning the 3rd coil in the diagram, i used another method for mine
@@pazzy4501I think Z1-Z2 is just one continuous line. It just means the coil starts at Z1 and ends at Z2 the same to u1-u2 and v1-v2. So even if z1 and z2 are reversed it makes no difference. I stand to be corrected kindly we are here to learn
@Le_VisN yeah you are right, it's just he swapped the diagram from what he actually did, confusing every body and he aslo should be more clear about the centrifugal switch wires as well, the video is a bit far and the connections are not clear
@@pazzy4501 Thank you sir!
First of all thank you for your effort .Please how i calculated the value of the capacitors
Super explanation
Thank you very much for your explanation
thank you man. this is the video i was looking for
Thank you, exactly what I was looking for! 👋👌
very helpful for a compressor motor I need to repair, thanks !
Hi Mr Jean thanks for the good explanation, how do you make the same single phase motor run in forward/reverse?
Hi Masauso
Just change around the start coil polarity. (just flip it around)
Thank you Sir. Very educating
Are you a South African? Like your accent
Thank u so much.. great…
Ace thankyou
Wow! Thanks!
Thank you!
As comnents below a small contribution... if I'm not mistaking z1-z2 and u1-u2 wireing Order might differ as it may change the rotation sense. Correct me if I'm wrong... that's what I've been looking to find out by watching the video as
A great video and stopped my capacitor bursting. One thing I’d like to know, is how you would get a motor like this to be able to go clockwise and anti-clockwise wt the flick of a switch.
You have got to reverse the connection of either main or auxiliary windings connection
Waleed Ellafi any ideas on how to do this?
Vw break switch
Can you make a video on how to replace a mechanical centrifugal starting switch to an electronic centrifugal starting switch. On this same type of motor.
Can you show how to change rotation?, my motor only runs counterclockwise even switching the power wires
Thanks
Why bridge
sir can i ask a question? in d winding connection wer is d one who connect is in the line d begging or the ending winding og the motor, both running and starting?
That's great. I have been struggling to wire this after watching this video,i found it very simple.
Sir can u give me a thought about what can i use to drive a single phase asychronous motor without capacitor on it