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.
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.
Wow! I have been busy for quite some time to get my motor running. Watching a ton of videos and reading loads. Finally found this video with a clear measurement. To find out I wasn’t a complete idiot, but the previous owner wired it wrong. Which isn’t a problem for star configuration, but actually is for delta (kinda sound like a pro here, while I usually stay away from this kind of stuff). A big THANK YOU!!!
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.
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.
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, 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?
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.
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.
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.
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?
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.
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.
@@p0we111 All connections remain exactly as you've shown but 'Start Coil' 'nominal' wires Z2 and Z1 swap positions (one for the other), on the terminal block... That's the flip?
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.
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?
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.
thanks for this video. its my first time connecting a motor and thanks to your video it was a breeze. when you say change the start coil polarity to change direction what do you mean. sorry I am new to this your help would be greatly appreciated.
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. The best way to get the values of the start and run caps is to google the values of the capacitors using your motor size (in HP or KW) as well as the voltage in your country (could be 110V or 230V) If you dont find anything,share the information on here and I can try to help.
I followed the wiring which was correct but the labeling of the terminals on the schematic going from right to left from the centrifugal switch to the should be V1 to V2 and Z1 to Z2 for the start coil, to provide clarity for what was actually wired in the video. For beginners it can be confusing; good practice makes sense for more complicated wiring in the future.
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.
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
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. 😢
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
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've got a YL90L motor with wiring diagram on motor, but is it possible that it is in error because it shows a link which would short out starting cap. Surely that is error in printing label, right?
@@p0we111 sure. The in series centrifugal switch will open to do that. But the diagram is showing a permanent copper link across the cap eliminating the cap altogether. For the clockwise diagram it shows the cap connected as you'd expect. But the anti clockwise diagram must have the extra silly line shorting across by mistake.
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.
@ssonicx135 I think you are right. According to the diagram the current is flowing through the start coil all the time. The switch discinnects only the start capacitor. Both capacitors are engaged at start (parallel connection, C=C1+C2), while at operation only run capacitor is connected. It seems to me, that the engine gets started by the two capacitors, but not by the start coil. The start coil is connectet all the time, both start and run, current flowing through it all the time, doing whatever, more harm than good. Therefore the motor overheats, as somebody mentioned above. Please, somebody correct me, if I am wrong. I'm not electrical engineer.
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.
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...
Understood. Your explanation is simple and straightforward. Like that
Finally a clear video!! Well done on explaining it in basic terms
Wish I see this when I was at my unit
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.
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
That's great. I have been struggling to wire this after watching this video,i found it very simple.
Its very good video, which is useful to know how to identify motor winding & connections.
Its helpful for all. Thanks
Thank you very much. Explaining very simply and clearly.
wow incredible explanation sir thank you so much
Oh my goodness. thank you so much. It's all clear to me now. Thank you for explaining it so clearly.
Good teaching
you are very good at this. Thank you for taking time to make the videos.
Very clear explanation bro, thank you so much!
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
Wow! I have been busy for quite some time to get my motor running. Watching a ton of videos and reading loads. Finally found this video with a clear measurement. To find out I wasn’t a complete idiot, but the previous owner wired it wrong. Which isn’t a problem for star configuration, but actually is for delta (kinda sound like a pro here, while I usually stay away from this kind of stuff). A big THANK YOU!!!
thank you for this neat and clear practical connection and information
Super explanation
Thanks for good information it's helpful for me
Thank you Sir. Very educating
Nice content, clear and easy to understand
very helpful for a compressor motor I need to repair, thanks !
Thank you very much for your explanation
Best explanation. You have a follow up in me for sure
Thank you, exactly what I was looking for! 👋👌
thank you for that sharing
Best explanation. Now how to contact on a panel
Thanks for your sharing it with us. This is a great tutorial and very informative...
dl
Thank you for smart explanation .
thank you man. this is the video i was looking for
Great explanation thank you
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
thanks pro, clear explanation with diagram
Thank u so much.. great…
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)
Dankie Jean. Well done🙏 Delyx se dankie
😁 Bly ek kon Delyx help!
thank you for that sharing.
Thank you very helpful
Thank you for the diagram
This is Very clear and straight.
Sir please, what could be the cause of a single phase motor that suddenly dropped in speed
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
Thanks that was useful!
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.
with this arrangement of the capasitors... can rotation direction be reversed only swab the terminal link?
First of all thank you for your effort .Please how i calculated the value of the capacitors
Thank you very much
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.
Nice work
Wow! Thanks!
great article....
I love the South African accent
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?
Very good, I agree.
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.
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?
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.
Can we connect changeover switch in this type of motor to run in forward reverse mode
Cool !!!
good video
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?
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
Nice video
Sir can u give me a thought about what can i use to drive a single phase asychronous motor without capacitor on it
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.
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 :)
Would that diagram be the same if it were a 220v motor obviously replacing the neutral for a second 120v wire?
Very good video... Thanks..... How do we reverse the motor direction if need be?
Hi Tom Tee
Just change around the start coil polarity. (just flip it around)
@@p0we111 All connections remain exactly as you've shown but 'Start Coil' 'nominal' wires Z2 and Z1 swap positions (one for the other), on the terminal block... That's the flip?
@@RollingEasy Exactly. Well put.
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.
Thanks
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?
Ace thankyou
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
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
thanks for this video. its my first time connecting a motor and thanks to your video it was a breeze. when you say change the start coil polarity to change direction what do you mean. sorry I am new to this your help would be greatly appreciated.
Hi Ahamed. Glad I could help.
Changing the polarity means just swap it around. Put Z2 on the side of the Live and Z1 on the side of V1.
Jean B thank you so much for all your help. Cheers
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
Thanks for this explanation, but can you clarify how to calculate the capacitor values for the exact motor?
Hi. The best way to get the values of the start and run caps is to google the values of the capacitors using your motor size (in HP or KW) as well as the voltage in your country (could be 110V or 230V)
If you dont find anything,share the information on here and I can try to help.
I tested one set of terminals and had 0.00 resistance. Would centrifugal switch be that low?
I followed the wiring which was correct but the labeling of the terminals on the schematic going from right to left from the centrifugal switch to the should be V1 to V2 and Z1 to Z2 for the start coil, to provide clarity for what was actually wired in the video. For beginners it can be confusing; good practice makes sense for more complicated wiring in the future.
I noticed that too thanks for clarity
Fabulous
how do you change direction on this motor?
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!
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.
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
Very clear explanation kundos
I noticed the Green/Yellow wire coming in was not connected to ground inside the casing of motor, so it is not required?
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
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. 😢
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
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.
Are you a South African? Like your accent
I've got a YL90L motor with wiring diagram on motor, but is it possible that it is in error because it shows a link which would short out starting cap. Surely that is error in printing label, right?
The start cap will be bypassed once the motor is started so it could be right.
@@p0we111 sure. The in series centrifugal switch will open to do that. But the diagram is showing a permanent copper link across the cap eliminating the cap altogether. For the clockwise diagram it shows the cap connected as you'd expect. But the anti clockwise diagram must have the extra silly line shorting across by mistake.
@@Swenser In that case Im with you. That does not seem right.
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
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.
can the motor rotation be changed
Hi Lou
Just change around the start coil polarity. (just flip it around)
According to the diagram, the start coil will always be connected. That's right?
No, the run coil is the one that is always connected, the start coil is disconnected after ataining the synchronous motion
@ssonicx135 I think you are right. According to the diagram the current is flowing through the start coil all the time. The switch discinnects only the start capacitor. Both capacitors are engaged at start (parallel connection, C=C1+C2), while at operation only run capacitor is connected. It seems to me, that the engine gets started by the two capacitors, but not by the start coil. The start coil is connectet all the time, both start and run, current flowing through it all the time, doing whatever, more harm than good. Therefore the motor overheats, as somebody mentioned above.
Please, somebody correct me, if I am wrong. I'm not electrical engineer.
@@otaznikvykricnik5961 Exactly
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.
❤❤❤❤❤❤❤❤❤❤❤❤❤❤
Hello. Thanks for video. Do you have email? I have some questions for you about this topic...
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.
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..
Kept saying doesnt matter which way wires go surely would run backwards but could be wrong
How to connect reverse forward
Hi.
Just change the polarity of the START coil (just flip it around)