I don't know if this might help you but thought I'd let you know this. I've been trained and have been in the hvac/r and electrical fields since 1987 and the way we find the common, run and start are by checking ohms. The highest ohm reading is always between the start and run windings, the lowest ohms is between common and run windings . If you want to check what kind of shape the windings are in then After getting all these ohms readings if you add the 2 lowest ohms together they should equal the highest ohms reading. If they don't equal out then there's a problem in the motor windings that may cause a failure very soon. This way is used in checking a compressor on a heating/cooling unit but should also work on motors since the compressor is just a motor also. Take care
where is the capacitor in the first induction motor in this video? is it built into the motor? I have a DPH224L01 I pulled out of an electric dryer, but I'm having a hard time figuring out how to reverse its direction. Does the capacitor have anything to do with changing the direction? I feel like I have tried to switch all of the leads, but its spins the same way.
I bought a bunch of motors at an estate auction. Three washing machine motors, a couple beefy old induction motors with capacitor on top, a big 220v motor, one with a gear reduction, and a big variac that they thought was a motor. All that went as one lot that no one else bid on, so I got it for $1.
Thanks, Jeremy, for answering my question of 2 days ago and going to the trouble of adding the link. Sadly it is of no help, it being a much larger capacitor start motor, (mine has no capacitor) and also it has the wires all accessible externally. 220 or 110v - the procedure would be exactly the same, I imagine. Thanks again for trying, but I'm now resigned to further searching to try to find the way to get this motor reversed. Maybe I'll dismantle the motor and mess about with the field coil wires inside......
You are the best motor engineering and physics teacher I've ever encountered.I have worked in theater and film/tv as an electrician for 40 years. I've tried to learn theory of electricity and motor control as part of my professional development. You are the BEST resource on the internet for straightforward, concise, and lucid explanations of theoretical and practical information!
Looks like you watch about the same stuff that I do ! Also seems like you're doing a lot of the same things that I've done, twenty years ago ! I've always hated wasting anything so would salvage most if not all of parts for my project. I didn't have the Internet for information at the time so you are lucky to have that now. You have good content and are growing your channel so keep it up, like it's said " If you build it, they will come " Thanks for sharing and take care.
I found two huge motors the other day. When I got them home and had a good look at the labels they read Boeing! Probably something belong to the airport nearby 😬
Jeremy You do amazing work. You make really complicated things very simple. You truly understand what you are teaching as Albert Einstein said "If you can't explain it simply, you don't understand it well enough." Thanks!
Fascinating. Very well made, and a lot more logically explained than most videos I see. Having basically no prior knowledge about motors, I'm finding your tutorials very helpful. Thanks.
I just started watching ur videos and i find them very interesting. Im not into this kind of stuff but i must be honest and admit that u have helped me in so many ways and in helping me use this type of application in motor vehicles. Im a gear head and u would be surprised on how i used ur ideas and methods in cars. So i want to thank u and say keep up the good work and keep enlightening us with ur intelligence. 👍✌️
this is absolutely brilliant mate, how can I SUBSCRIBE 1,000 times, ha ha, question for you during the BONUS TEACHING MOMENT how are you recreating the hum, you taught us that it's due to a faulty capacitor, so are you just omitting one? in other words the momentary switch is keeping it off until you press it?
I came into two Bodine gearmotors (NSI-54RL and NSI-33R). My main question, how do I wire the 54RL so I can utilize the F&R function via toggle switch like you have on your lathe. It has two Blue wires and two black wires. Thank you
Hello sir,,, thanks for your time. I've got a craftsman table saw motor that's shot.. I've got another motor to put on it but it says it's not reversible I need it to go clockwise. But this motor is ccw.. can it be done?
Jeremy, Love your channel and I greatly admire your work. I have a situation which I suspect a significant portion of your subscribers may find themselves in. Long story short, I bought a lathe to use in my garage. I converted the 3-phase motor to run on single phase 220 volt power using a Static Phase Controller. It works great but only in one direction. However, the 3-position drum switch no longer works. When I start it, the motor (and chuck) only rotates in one direction. The drum switch doesn't change anything. I have found online wiring diagrams on converting 3-phase motors to single phase 220 volts. I have found wiring diagrams for drum reversing switch's on single and 3-phase motors. But I have not come across the wiring diagram for my particular situation. Other details that may help you. 1. SPC: Phase-A-Matic PAM-300HD static phase converter. 2. Motor: Century brand Squirrel-Cage Induction Polyphase Motor (1.5 HP, model number SC-184-FC4-7). 3. Drum switch: 3-position, Cutler-Hammer Forward-Off-Reverse lever-operated switch. 4. Startup switch: A circuit box equipped with a green start button and a red emergency shutoff switch. 5. Magnetic Starter: GE CR306 Magnetic Starter (NEMA size 00) Let me know if this is something you would like to address. Sincerely, Bill
Flipping the wires on start winding changes the direction of the induction motor. Correct. What is the reason for it, it is AC, current goes back and forth. That is the point that should be the main focus. Don't you think?
No... because one is a practical question (the goal of the video) the other is a theory question... why it works. The goal was to solve a problem not explain the science. However, I have made a series of videos explaining things like that... How motors work for beginners. The answer you seek is in there.
@@Jeremy_Fielding I want to make sure you didn't take my inquiry as criticism or the wrong way. I love everything you do. You are one of the real no bull people that I have stumbled on. After I inquired as to why the answer popped in my head or I think it did anyway. I was going to Quora to ask that but I haven't yet. Assuming the answer is right it looked like this: The power we get is what they called split-phase. Current electricity alternates between two black hot wires in the house. The white wire is in the middle of the transformer coil So current at any given time always moving from the black wire through the load first. The current, magnetic field, force, right-hand rule, torque direction. There is ever a slight delay from the white wire towards the black wire. Wiring the capacitor one way, it is discharged, current surges from the black to the white, clockwise perhaps. Wiring the other way it is discharged from the white wire to the black, counterclockwise. But I could be wrong. The natural follow up question would be, can one make a dryer motor and shaded pole motor change direction, as they have no capacitor? or more precisely be bi-directional? If what I said in my explanation above is correct then the answer is no. Unless you build them with two sets of windings one for each direction.
Apologies -- this is the FIRST of all your videos I have seen (viewed 01-31-2023....). Totally unrelated question: if I have a large treadmill motor that is air-cooled directly with shaft-mounted fan (fan designed for counter-clockwise rotation, blowing air on to / into the motor), how can I find a fan that will cool the motor in clockwise rotation? Original fan is unidirectional airflow due to curved surface of fan blades (do even if you flip-mount the fan -- clockwise still blows air AWAY from the motor...). I have called and searched online....can't find a 4.25" diameter fan with 7/16" shaft center-hole, and fan blades angled to blow air on to the motor via clockwise rotation..... Do you know of any parts collectors / dealers / suppliers who might have such a fan? OR -- will I need to mount a separate, electrically powered fan to blow air into the motor....? (Yes: this is one of those treadmill-as-DC-power-generator projects....) If you ever see this question and have time -- thanks! Thanks again for all your videos sharing your knowledge.
Hi Jeremy, I love all your videos. I only wish I had your knowledge of motors. I’m an optical physicist but I can’t understand electronics. Question: I have a Jet 20MF drill press. 1.5 hp. 18 Amp, 1720 rpm 4 pole class E motor. It can be wired for 120 or 240 vac. I want to make it so it can go in reverse, and possibly a variable speed. Any suggestions would be appreciated. Thanks, Paul
Hi Jeremy. I have another question for you. How do I wire a 2 NO 2 NC rotator selector switch to act like a DPDT toggle switch (to reverse my dc motor direction)? I’m having trouble finding information of this sort. Thanks, Paul
Thank you for this explanation of how to reverse the direction of motors. I didn't even know for sure if it was possible without rewiring the motor. I made a mount for a motor onto a meat grinder. Once it was all hooked up, the grinder spun the wrong way. 😢 I didn't want to re-mount the motor to where it would be hanging off the back. My motor says on the tag to switch the red and black wires to change CW/CCW. Easy! Thanks
I'd love to see more about heavy-duty robotics for homeuse. So much fun doing robotics but its all tiny useless crap. How about what devices to scavenge components to build heavy-duty robot for makerlab?
Thanks man. I've a 12 volt DC motor and when I flip the polarity on it it rotates same direction. And I thought "What da F???". When I hacked it open it turn out to be a universal one. No permanent magnets. All wired wrap arounds.
Hello,jeremy, i have a dc treadmill motor 1hp i tried to reverse it hooked the switch in and then tried to reverse it and the motor keeps turning counter clock wise.how can i correct it .......it is a dc ge motor hee is some info,hopefully you can tell me what i need to know.......ge motor BD626222 120 V AM I MISSING SOMETHING IT SAYS dc MOTOR.
I have a motor removed from a brushed A/C powered chainsaw that I'd like to run on D/C in both forward and backward directions, only issue I'm having is the motor only has 2 wires. No starting coil. So When I apply DC Voltage in either polarity it always kicks off in the clockwise direction. Is there anyway I can make it behave the way I want it to, or is this motor just not suitable for my needs?
Project: AC treadmill inverter, I have a DC motor so if I add a bridge rectifier and a choke at the output of the inverter would it safety run the DC motor
I have a basic stand-up house fan that quit working. I believe it's an induction motor based on your other video (it's basically the same fan you had, the "sacrificial" one, lol). I changed the capacitor, and had it working but snapped some of the little wires from the windings and have no idea where they go. I don't understand why they design it this way with such fragile, tiny wires. I can't sleep without my fan. Does anybody have any tips to help me get this bad boy running again? Even a way to just rig it up with one speed?? Please help! If not, Jeremy will be exposed as a fraud, and I don't want that. Also, if I can't sleep at night due to not having my fan, I could potentially have a fatal car accident. Leaving not only my own blood, but also the blood of every innocent victim I take out with me all over the hands of Jeremy Fielding and every knowledgeable gentleman reading this comment and unfortunately damning your soul to burn in the eternal pits of hell. So let's help each other out and get this fan running again so we can make it to heaven guys. Thanks in advance! Your friend - Joe
Cool video, what would you use to slow the speed of say a floor/room drying fan. Permanent applications. Since ur not fond of the Harbor freight one. Tim in Omaha Nebraska
Maybe unrelated, or maybe subject for a different video, but why are vacuum videos so noisy. It is like universal. Call it a vacuum motor and it will be noisy. Is there anything a body can do to make them run quieter? Thank you Jeremy for all your excellent YTs. You are an amazing teacher.
Hi there, I have a single phase AC motor from my table top drill press I want to reverse direction. 2 wires coming from motor and 3 wires going to motor. One is grnd, one hot one neutral. I swapped the H and N leads with the 2 wires from motor. Both wire configurations don’t make any difference in rotation. What is the problem?
Do you have any videos on how to test AC & DC motor winding ??? also how would you put together a resistivity meter for underground surveys ???. really enjoy watching your videos . Thanks.
Jeremy, I have a Vornado box fan that I want to replace the power cord on. I started this quite some time ago, but due to medical reasons, I had to leave this for a while. Currently, all my markings as to wire connections are now missing. Vornado will not provide a wire diagram,. Can you help?
I just recent;y acquired a couple of 2 speed swamp cooler motors. Both are induction motors and I would like to reverse them. Do you know if it's possible with 2 speed motors?
picked up a leaf blower motor very powerful, used a speed controler on it as its controler was not very good, i tried just reversing the power supply to reverse the spin but it did not work, will try reversing bush wires tomorrow, my speed controller off ebay is like yours and is full throttle at about 60-80v , is there a better way to properly control it in finer adjustments. Thanks
If you possibly get this message, I'm trying to use a sewing machine motor to DIY an Electric Spinning Wheel. I need to know how to install a toggle switch so I can go clockwise and counter clockwise.
Hi there, doing a bit of scrap metal on the side I come across allsorts of different motors, from Stan appliances to coffee machines, elec garage Dr's, tools saws hoovers etc has any one got inventive ways to use these mabee some power saving device for my trailer, it seems a waste to just weigh them in for scrap ??? Regards TaG
Hi Jeremy great video thanks, I am trying to reverse to rotation of my capacitor start 1 1/2 Hp single phase motor. I got the motor to spin in the reverse direction when not under load but as soon as i install the belt for the table saw it wont start and makes a loud humming noise. Any ideas? Thanks again for the videos
Excellence is a pleasure to behold and gains indescribable qualities when said excellence imparts current and enduring value to the witness of said excellence. 'Nuff Said.
I noticed with a vacuum cleaner motor that I could run it on 12 volts rather than 120 just by connecting the brushes in parellel with the field windings
I found a 1/8 hp fan motor and built a tiny table top belt sander out of it. For a while it was fun running it either way without the capacitor by hand cranking it but decided for convenience to install the recommended t wire cap. The problem is that I wired it in per the schematic on the face plate but now it only runs the opposite way that I need it to. Advice?
correct me if I'm wrong. for 3 wire ac motor with single capacitor, should we plug the com wire to neutral, 2 other wires from motor plus live to capacitor? or can we change the live and neutral? or it makes no difference?
Of all the motors that you have shown there is not a one like mine. It is a treadmill motor but, it is ac induction mechanically controlled speed. There are only three wires from the windings, they go into a black box that has a set of points. I installed it on a mini metal lathe and I need to reverse it. Help!
someone wanted me to throw out an electric lawn mower,,, so i took it and took out the motor,, it works good, but I need a body or casing to put it in,, can you help me build one or give me idea s how to cover it. thank.
Hi, again Jeremy, I've just watched your video - "Who is this guy" and as you said there, you like reacting to the comments put forward, it has prompted me to re-ask the question I put to you in the comments below 3 weeks ago. I made a stupid mistake initially in saying the 220v motor I wanted to know how to reverse was from a lawn mower. Obviously it could not have been. I re-put the corrected question to you but so far have received no answer. Perhaps you could help now - I'd be very pleased if you did ?
Thanks for your patience. You comment was buried by all the other comments. I have alot of conversations going at once so I am losing track of some things. Unfortunately I haven't tried to wire a 240 volt motor. I don't have 240 power in my shop and I am not sure how to do it. The process should be the same... as far as reversing the start winding... but I haven't actually done it myself so I am afraid to recommend specific steps. I found a video covering exactly this which may be helpful. Again I haven't tried it so you will have to take this information at your own risk . ruclips.net/video/rMeMaT0HZN0/видео.html
So does a brushless reversible motor have only one startup winding ? I have one that suddenly only goes in reverse now & i thought a winding was burnt.
WHEN WIRING AN INSTANTANEOUSLY REVERSABLE MOTOR IS THE INTERNAL BRAKE OPERATED BY CHANGES IN THE POLARITY OF THE START WINDING WHEN THE START LEADS ARE WIRED THRU A DOUBLE THROW DOUBLE POLE SWITCH?
MY UNDERSTANDING IS THAT IF THE START WINDING WIRE CONNECTIONS ARE SWITCHED, IS., PHASE & NEUTER CONNECTIONS ARE INTERCHANGED, THE ROTATION CAN BE REVERSED.
You make very good videos. They are clear, concise, and well presented. You often recommend that viewers research subjects on their own to wake up that creativeness inside them. Your videos are useful and just fun to watch. Keep going!
You, sir, have a very pleasant voice :D I subbed after 10 seconds. Found your channel while looking for a way to reverse the direction of an electrical motor. In short I am left handed. And so I am trying to build my own table saw. That means that I have to reverse the direction of the circular saw motor I am using. And I am totally clueless when it comes to electrics. I guess I have to watch more of your videos. lol. If you have the inclination, stop by my tiny channel and show some support. Cheers from Norway.
Super cool there's answers to my questions. I've a carpentry etc workshop in Devon UK 🇬🇧 on the bank of the river Dart which is incidentally the old English for oak, any way I've been struggling with a bandsaw. I managed to find and mount a replacement motor but the direction is reversed what's the best way to change the polarity? thanks Geoff
Sir let me tel you a short story, you are exactly like me, i work on 2 motor shops on my life,for about 20 years ,i love motors and generators ,but a"m retiring know but i have so many motors in my house ,,,(all kind motors ,DC ,AC SINGLE PHASE, 3 PHASE, all sizes etc,etc and i can not resist play whit motors, even before i start watch this video i play whit a setup G M (MOTOR GENERATOR ) i have in my basement just to see this babies runing on the bench , let me say that,,,,, you are very smart person and a good teacher ,you know what you are doing,tanks for teaching this stuff the right way , i can see you love motors like me ,good bless you end enjoy teaching ,TANKS
Thank you for your instruction. I know nothing about A/C motors, but I've come across a large industrial fan. Some DYI person added a one phase motor to it. Looks like an old dryer motor (like the gray one on your left). The motor runs in the wrong direction and blows air out the back. I tried reversing the fan, but it worked the same. I'll take the motor off and try your suggestions. Thanks again.
I found a compressor - 21 Gallon 3/4 HP - Craftsman...After watching your video I replaced the capacitor. dressed up the motor switch. And I saved it from the dump and its inow in service in my rear pole barn. Thanks for the videos!
Hi let ne start by saying i love yr channel! You know your shit! Which is Why i have a question for you.. I have a type 2 ekec drill 5amp.. That im using " for something else.. That requires i side angle.. And i need to control the speed of the drill externally how can i do that? I tried a dimner switch.and an extra larger ext cord wired to gether. Works on the lites not on the drill.... Im guessing not enough power. Help?
So, lets see. You don't dumpster dive but you find these motors on the side of the road. You mean people put out a washing maching at the curb along with the rest of the garbage and you put the washing machine in your truck and take it home/shop to disasemble.
Exactly...I don’t shop behind stores or anything like that. If I happen to see a large appliance on the curb while going to work, and it’s easy to get, I grab it on the way home.
Everytime... the ones with the concrete blocks in the bottom aren't that friendly, but at that point I feel committed. The blocks help keep them from tipping over. Now that I think about it, the newer ones don't usually have the weight in the bottom. When I get home I have a hand truck for moving it to the shop. Then its right back to the road. I hating having any scrap metal in the yard.
Thanks for the great video and the very generous links to other great motor video. I keep adding your motor videos to my reference playlist. Love your channel.
Hey Jeremy, thanks for sharing knowledge. I was hoping you could help me. I have an AO Smith 1/2 hp ac motor. It has 7 wires coming out. How do I wire this to replace a table saw motor.
I find most of the motors, that I have, from dishwashers and washing machines. I schlep the appliance home, scavenge clamps, metal, wire and motor, then set it to the curb again. Usually it's gone in a day or two as metal Scrappers routinely patrol my hood for scrap. I am in Mississauga, Canada.
You're awesome, Jeremy. This was very helpful. I need to reverse the rotation on an attic exhaust fan and for some reason can't find documentation or a diagram online. Thank you!
Awesome video! I have a question. Would there be a way to have the motor reverse automatically say by something breaking a beam for like a garage door opener? Pretty much I’m looking to make something move back and forth on a track on its own. Thanks
Your professionalism and clear information delivery and clean language use is refreshing and enlightening. Thank you, blessings, and keep it up!
Thank you
I don't know if this might help you but thought I'd let you know this. I've been trained and have been in the hvac/r and electrical fields since 1987 and the way we find the common, run and start are by checking ohms. The highest ohm reading is always between the start and run windings, the lowest ohms is between common and run windings . If you want to check what kind of shape the windings are in then After getting all these ohms readings if you add the 2 lowest ohms together they should equal the highest ohms reading. If they don't equal out then there's a problem in the motor windings that may cause a failure very soon. This way is used in checking a compressor on a heating/cooling unit but should also work on motors since the compressor is just a motor also. Take care
where is the capacitor in the first induction motor in this video? is it built into the motor? I have a DPH224L01 I pulled out of an electric dryer, but I'm having a hard time figuring out how to reverse its direction. Does the capacitor have anything to do with changing the direction? I feel like I have tried to switch all of the leads, but its spins the same way.
Have you tryed to wire a alternator off a car /truck to work as a motor? If not will you ? Thanks jim love your style of teaching thank you.
I bought a bunch of motors at an estate auction. Three washing machine motors, a couple beefy old induction motors with capacitor on top, a big 220v motor, one with a gear reduction, and a big variac that they thought was a motor. All that went as one lot that no one else bid on, so I got it for $1.
it´s a robbery Sir !
Precisely explained!! I got the answer for the question I was looking for for 2 days! Awesome, I owe you!
I'm gonna have to watch this a few more times.
Found your channel while surfing. I am now a subscriber. I love great teachers like you.
Thanks, Jeremy, for answering my question of 2 days ago and going to the trouble of adding the link. Sadly it is of no help, it being a much larger capacitor start motor, (mine has no capacitor) and also it has the wires all accessible externally. 220 or 110v - the procedure would be exactly the same, I imagine.
Thanks again for trying, but I'm now resigned to further searching to try to find the way to get this motor reversed. Maybe I'll dismantle the motor and mess about with the field coil wires inside......
You are the best motor engineering and physics teacher I've ever encountered.I have worked in theater and film/tv as an electrician for 40 years. I've tried to learn theory of electricity and motor control as part of my professional development. You are the BEST resource on the internet for straightforward, concise, and lucid explanations of theoretical and practical information!
+Joe Ros Burns thank you!
here here
Than you. All sorted, Very very helpful!!!! Got 3 washing Machine motors to sort out. Regards from South Africa,
Looks like you watch about the same stuff that I do !
Also seems like you're doing a lot of the same things that I've done, twenty years ago ! I've always hated wasting anything so would salvage most if not all of parts for my project.
I didn't have the Internet for information at the time so you are lucky to have that now. You have good content and are growing your channel so keep it up, like it's said " If you build it, they will come "
Thanks for sharing and take care.
Ken Gamble then make your own video with something interesting.
I found two huge motors the other day. When I got them home and had a good look at the labels they read Boeing!
Probably something belong to the airport nearby 😬
Jeremy You do amazing work. You make really complicated things very simple. You truly understand what you are teaching as Albert Einstein said "If you can't explain it simply, you don't understand it well enough." Thanks!
yeah, tell that to my college professors, ha ha
Great explanation,very clear and understandable! Keep up the good work!
wow thank you so much
Fascinating. Very well made, and a lot more logically explained than most videos I see. Having basically no prior knowledge about motors, I'm finding your tutorials very helpful. Thanks.
It's criminal that your channel is not bigger.
Will O'Neill Dang right. I have yet to find better information on electric motors than what's here.
The bigger his channel gets, the less time he will have to do videos. :D
He'll be answering so many questions, he'll never get back to his shop!
:D
No it's criminal
it's criminal ,I don't get notified, been unsubscribed. it is definitely criminal.
This cat is one of the best teachers on you tube ,maybe the world.
I just started watching ur videos and i find them very interesting. Im not into this kind of stuff but i must be honest and admit that u have helped me in so many ways and in helping me use this type of application in motor vehicles. Im a gear head and u would be surprised on how i used ur ideas and methods in cars. So i want to thank u and say keep up the good work and keep enlightening us with ur intelligence. 👍✌️
Thank you Jeremy! I just reversed a motor with these instructions so that I can use it for the old lathe that I got. I really appreciate what you do!
Your presentation is great buddy, informative and easy to listen to, keep it up!
Thank you for saving me a lot of time with my project! Your delivery is excellent.
this is absolutely brilliant mate, how can I SUBSCRIBE 1,000 times, ha ha, question for you during the BONUS TEACHING MOMENT how are you recreating the hum, you taught us that it's due to a faulty capacitor, so are you just omitting one? in other words the momentary switch is keeping it off until you press it?
I gave this video a "thumb up", but please emphasize more on disconnecting before touching wires !
I am more knowledgeable today than yesterday, thanks to you!
I came into two Bodine gearmotors (NSI-54RL and NSI-33R). My main question, how do I wire the 54RL so I can utilize the F&R function via toggle switch like you have on your lathe. It has two Blue wires and two black wires. Thank you
What a great video, learned so much.
Hello sir,,, thanks for your time. I've got a craftsman table saw motor that's shot.. I've got another motor to put on it but it says it's not reversible I need it to go clockwise. But this motor is ccw.. can it be done?
Jeremy, Love your channel and I greatly admire your work.
I have a situation which I suspect a significant portion of your subscribers may find themselves in.
Long story short, I bought a lathe to use in my garage. I converted the 3-phase motor to run on single phase 220 volt power using a Static Phase Controller. It works great but only in one direction. However, the 3-position drum switch no longer works. When I start it, the motor (and chuck) only rotates in one direction. The drum switch doesn't change anything.
I have found online wiring diagrams on converting 3-phase motors to single phase 220 volts. I have found wiring diagrams for drum reversing switch's on single and 3-phase motors. But I have not come across the wiring diagram for my particular situation.
Other details that may help you.
1. SPC: Phase-A-Matic PAM-300HD static phase converter.
2. Motor: Century brand Squirrel-Cage Induction Polyphase Motor (1.5 HP, model number SC-184-FC4-7).
3. Drum switch: 3-position, Cutler-Hammer Forward-Off-Reverse lever-operated switch.
4. Startup switch: A circuit box equipped with a green start button and a red emergency shutoff switch.
5. Magnetic Starter: GE CR306 Magnetic Starter (NEMA size 00)
Let me know if this is something you would like to address.
Sincerely,
Bill
Flipping the wires on start winding changes the direction of the induction motor. Correct.
What is the reason for it, it is AC, current goes back and forth. That is the point that should be the main focus. Don't you think?
No... because one is a practical question (the goal of the video) the other is a theory question... why it works. The goal was to solve a problem not explain the science. However, I have made a series of videos explaining things like that... How motors work for beginners. The answer you seek is in there.
@@Jeremy_Fielding I want to make sure you didn't take my inquiry as criticism or the wrong way. I love everything you do. You are one of the real no bull people that I have stumbled on.
After I inquired as to why the answer popped in my head or I think it did anyway. I was going to Quora to ask that but I haven't yet. Assuming the answer is right it looked like this:
The power we get is what they called split-phase. Current electricity alternates between two black hot wires in the house. The white wire is in the middle of the transformer coil
So current at any given time always moving from the black wire through the load first. The current, magnetic field, force, right-hand rule, torque direction. There is ever a slight delay from the white wire towards the black wire. Wiring the capacitor one way, it is discharged, current surges from the black to the white, clockwise perhaps. Wiring the other way it is discharged from the white wire to the black, counterclockwise.
But I could be wrong.
The natural follow up question would be, can one make a dryer motor and shaded pole motor change direction, as they have no capacitor? or more precisely be bi-directional? If what I said in my explanation above is correct then the answer is no. Unless you build them with two sets of windings one for each direction.
Apologies -- this is the FIRST of all your videos I have seen (viewed 01-31-2023....). Totally unrelated question: if I have a large treadmill motor that is air-cooled directly with shaft-mounted fan (fan designed for counter-clockwise rotation, blowing air on to / into the motor), how can I find a fan that will cool the motor in clockwise rotation? Original fan is unidirectional airflow due to curved surface of fan blades (do even if you flip-mount the fan -- clockwise still blows air AWAY from the motor...). I have called and searched online....can't find a 4.25" diameter fan with 7/16" shaft center-hole, and fan blades angled to blow air on to the motor via clockwise rotation..... Do you know of any parts collectors / dealers / suppliers who might have such a fan? OR -- will I need to mount a separate, electrically powered fan to blow air into the motor....? (Yes: this is one of those treadmill-as-DC-power-generator projects....) If you ever see this question and have time -- thanks! Thanks again for all your videos sharing your knowledge.
Hi Jeremy, I love all your videos. I only wish I had your knowledge of motors. I’m an optical physicist but I can’t understand electronics.
Question: I have a Jet 20MF drill press. 1.5 hp. 18 Amp, 1720 rpm 4 pole class E motor. It can be wired for 120 or 240 vac.
I want to make it so it can go in reverse, and possibly a variable speed.
Any suggestions would be appreciated.
Thanks,
Paul
Hi Jeremy. I have another question for you.
How do I wire a 2 NO 2 NC rotator selector switch to act like a DPDT toggle switch (to reverse my dc motor direction)?
I’m having trouble finding information of this sort.
Thanks,
Paul
Thank you for this explanation of how to reverse the direction of motors. I didn't even know for sure if it was possible without rewiring the motor. I made a mount for a motor onto a meat grinder. Once it was all hooked up, the grinder spun the wrong way. 😢 I didn't want to re-mount the motor to where it would be hanging off the back. My motor says on the tag to switch the red and black wires to change CW/CCW. Easy! Thanks
I'd love to see more about heavy-duty robotics for homeuse. So much fun doing robotics but its all tiny useless crap. How about what devices to scavenge components to build heavy-duty robot for makerlab?
Thanks man. I've a 12 volt DC motor and when I flip the polarity on it it rotates same direction. And I thought "What da F???". When I hacked it open it turn out to be a universal one. No permanent magnets. All wired wrap arounds.
Hello,jeremy,
i have a dc treadmill motor 1hp i tried to reverse it hooked the switch in and then tried to reverse it and the motor keeps turning counter clock wise.how can i correct it .......it is a dc ge motor hee is some info,hopefully you can tell me what i need to know.......ge motor
BD626222 120 V AM I MISSING SOMETHING IT SAYS dc MOTOR.
This advice is invaluable mate, I have been looking for you. Wonderfully explained and I now can say hi to the washing machine in the corner lol
I have a motor removed from a brushed A/C powered chainsaw that I'd like to run on D/C in both forward and backward directions, only issue I'm having is the motor only has 2 wires. No starting coil. So When I apply DC Voltage in either polarity it always kicks off in the clockwise direction. Is there anyway I can make it behave the way I want it to, or is this motor just not suitable for my needs?
Project: AC treadmill inverter, I have a DC motor so if I add a bridge rectifier and a choke at the output of the inverter would it safety run the DC motor
I have a basic stand-up house fan that quit working. I believe it's an induction motor based on your other video (it's basically the same fan you had, the "sacrificial" one, lol). I changed the capacitor, and had it working but snapped some of the little wires from the windings and have no idea where they go. I don't understand why they design it this way with such fragile, tiny wires. I can't sleep without my fan. Does anybody have any tips to help me get this bad boy running again? Even a way to just rig it up with one speed?? Please help! If not, Jeremy will be exposed as a fraud, and I don't want that. Also, if I can't sleep at night due to not having my fan, I could potentially have a fatal car accident. Leaving not only my own blood, but also the blood of every innocent victim I take out with me all over the hands of Jeremy Fielding and every knowledgeable gentleman reading this comment and unfortunately damning your soul to burn in the eternal pits of hell. So let's help each other out and get this fan running again so we can make it to heaven guys. Thanks in advance! Your friend
- Joe
Cool video, what would you use to slow the speed of say a floor/room drying fan. Permanent applications. Since ur not fond of the Harbor freight one. Tim in Omaha Nebraska
5kmc145yta007as 175d106g026 washing machine Motor
Can this be done to any motor... I want to make a blower out of a vacuum cleaner motor, is it possible and how?
Maybe unrelated, or maybe subject for a different video, but why are vacuum videos so noisy. It is like universal. Call it a vacuum motor and it will be noisy. Is there anything a body can do to make them run quieter? Thank you Jeremy for all your excellent YTs. You are an amazing teacher.
Hi there, I have a single phase AC motor from my table top drill press I want to reverse direction. 2 wires coming from motor and 3 wires going to motor. One is grnd, one hot one neutral. I swapped the H and N leads with the 2 wires from motor. Both wire configurations don’t make any difference in rotation. What is the problem?
Do you have any videos on how to test AC & DC motor winding ???
also how would you put together a resistivity meter for underground surveys ???.
really enjoy watching your videos .
Thanks.
Don't some of the motors require a solinoid or capacitor attached on body of motor
Sir have nice video explaination ...salamat sir..means thank you sir
Jeremy,
I have a Vornado box fan that I want to replace the power cord on. I started this quite some time ago, but due to medical reasons, I had to leave this for a while. Currently, all my markings as to wire connections are now missing. Vornado will not provide a wire diagram,. Can you help?
I just recent;y acquired a couple of 2 speed swamp cooler motors. Both are induction motors and I would like to reverse them. Do you know if it's possible with 2 speed motors?
picked up a leaf blower motor very powerful,
used a speed controler on it as its controler was not very good,
i tried just reversing the power supply to reverse the spin but it did not work, will try reversing bush wires tomorrow, my speed controller off ebay is like yours and is full throttle at about 60-80v , is there a better way to properly control it in finer adjustments.
Thanks
If you possibly get this message, I'm trying to use a sewing machine motor to DIY an Electric Spinning Wheel. I need to know how to install a toggle switch so I can go clockwise and counter clockwise.
Hi there, doing a bit of scrap metal on the side I come across allsorts of different motors, from Stan appliances to coffee machines, elec garage Dr's, tools saws hoovers etc has any one got inventive ways to use these mabee some power saving device for my trailer, it seems a waste to just weigh them in for scrap ??? Regards TaG
Hi Jeremy great video thanks, I am trying to reverse to rotation of my capacitor start 1 1/2 Hp single phase motor. I got the motor to spin in the reverse direction when not under load but as soon as i install the belt for the table saw it wont start and makes a loud humming noise. Any ideas?
Thanks again for the videos
Excellence is a pleasure to behold and gains indescribable qualities when said excellence imparts current and enduring value to the witness of said excellence. 'Nuff Said.
I just want to be able to tell from which side is clockwise vs CC ?? On old motor just has arrow pointing clockwise vs counter clockwise on replacment
I noticed with a vacuum cleaner motor that I could run it on 12 volts rather than 120 just by connecting the brushes in parellel with the field windings
I found a 1/8 hp fan motor and built a tiny table top belt sander out of it. For a while it was fun running it either way without the capacitor by hand cranking it but decided for convenience to install the recommended t wire cap. The problem is that
I wired it in per the schematic on the face plate but now it only runs the opposite way that I need it to. Advice?
Thx tge golde tip! now i just need to find the starter winding. Of my vacuum ckeaner engine.
How can you make a dc motor to stop by itself at a specific length (if it's spinning a belt) then reverse polarity next time it's switch on?
correct me if I'm wrong. for 3 wire ac motor with single capacitor, should we plug the com wire to neutral, 2 other wires from motor plus live to capacitor? or can we change the live and neutral? or it makes no difference?
Please do a special video on three phase pole changing two speed induction motor please 🙏
Of all the motors that you have shown there is not a one like mine. It is a treadmill motor but, it is ac induction mechanically controlled speed. There are only three wires from the windings, they go into a black box that has a set of points. I installed it on a mini metal lathe and I need to reverse it. Help!
someone wanted me to throw out an electric lawn mower,,, so i took it and took out the motor,, it works good, but I need a body or casing to put it in,, can you help me build one or give me idea s how to cover it. thank.
Hi, again Jeremy, I've just watched your video - "Who is this guy" and as you said there, you like reacting to the comments put forward, it has prompted me to re-ask the question I put to you in the comments below 3 weeks ago. I made a stupid mistake initially in saying the 220v motor I wanted to know how to reverse was from a lawn mower. Obviously it could not have been. I re-put the corrected question to you but so far have received no answer. Perhaps you could help now - I'd be very pleased if you did ?
Thanks for your patience. You comment was buried by all the other comments. I have alot of conversations going at once so I am losing track of some things. Unfortunately I haven't tried to wire a 240 volt motor. I don't have 240 power in my shop and I am not sure how to do it. The process should be the same... as far as reversing the start winding... but I haven't actually done it myself so I am afraid to recommend specific steps. I found a video covering exactly this which may be helpful. Again I haven't tried it so you will have to take this information at your own risk . ruclips.net/video/rMeMaT0HZN0/видео.html
I live in a rural area so unfortunately people where I live usually just take things with motors straight to the dump or the recycling center
Hi Jeremy can you just switch the wires from the capacitor. Cheers Bill
So does a brushless reversible motor have only one startup winding ?
I have one that suddenly only goes in reverse now & i thought a winding was burnt.
WHEN WIRING AN INSTANTANEOUSLY REVERSABLE MOTOR IS THE INTERNAL BRAKE OPERATED BY CHANGES IN THE POLARITY OF THE START WINDING WHEN THE START LEADS ARE WIRED THRU A DOUBLE THROW DOUBLE POLE SWITCH?
just reversed the polarity on a miter saw motor and it did not change direction. Could you please tell me what I'm not understanding.
MY UNDERSTANDING IS THAT IF THE START WINDING WIRE CONNECTIONS ARE SWITCHED, IS., PHASE & NEUTER CONNECTIONS ARE INTERCHANGED, THE ROTATION CAN BE REVERSED.
Why didn't you show us how you wired up the momentary switch? (
i have a dryer that at some point was wired backwards and i cant tell which wires to switch because mine has the older style square switchblock.
I know nothing electrical but was assuming switch the two cables but wanted to double check. And lo and behold that is what was needed
You make very good videos. They are clear, concise, and well presented. You often recommend that viewers research subjects on their own to wake up that creativeness inside them. Your videos are useful and just fun to watch. Keep going!
+JOHN GEBHART thank you John. This kind of comment is very helpful to future videos as well.
How do I change the direction on an Emerson motor,230v
I have a question about the washing machine motor how do you get it to start if it doesn't have a capacitor to begin with?
You, sir, have a very pleasant voice :D I subbed after 10 seconds. Found your channel while looking for a way to reverse the direction of an electrical motor. In short I am left handed. And so I am trying to build my own table saw. That means that I have to reverse the direction of the circular saw motor I am using. And I am totally clueless when it comes to electrics. I guess I have to watch more of your videos. lol.
If you have the inclination, stop by my tiny channel and show some support. Cheers from Norway.
i cannot see part 1 enjoying watching the back catalogue of films
Part one of this video was redone and I deleted the original. You are looking for "how to wire most motors" ruclips.net/video/ZKodxGcRSnw/видео.html
@@Jeremy_Fielding ah ok brilliant i watched it twice now , its another good video , thanks jeremy !
hi jeremy what happens when magnet and coil turn in opp directions
how does decreasing the air intake on a scroll fran makes the motor run faster
Super cool there's answers to my questions. I've a carpentry etc workshop in Devon UK 🇬🇧 on the bank of the river Dart which is incidentally the old English for oak, any way I've been struggling with a bandsaw. I managed to find and mount a replacement motor but the direction is reversed what's the best way to change the polarity? thanks Geoff
Switch the wires around.. Boom! You're welcome friend!
Hi , if you pls can explain to me how to wire an awning switch
Very very beautiful video thanks
Sir let me tel you a short story, you are exactly like me, i work on 2 motor shops on my life,for about 20 years ,i love motors and generators ,but a"m retiring know but i have so many motors in my house ,,,(all kind motors ,DC ,AC SINGLE PHASE, 3 PHASE, all sizes etc,etc and i can not resist play whit motors, even before i start watch this video i play whit a setup G M (MOTOR GENERATOR ) i have in my basement just to see this babies runing on the bench , let me say that,,,,, you are very smart person and a good teacher ,you know what you are doing,tanks for teaching this stuff the right way , i can see you love motors like me ,good bless you end enjoy teaching ,TANKS
Thank you for your instruction. I know nothing about A/C motors, but I've come across a large industrial fan. Some DYI person added a one phase motor to it. Looks like an old dryer motor (like the gray one on your left). The motor runs in the wrong direction and blows air out the back. I tried reversing the fan, but it worked the same. I'll take the motor off and try your suggestions. Thanks again.
I found a compressor - 21 Gallon 3/4 HP - Craftsman...After watching your video I replaced the capacitor. dressed up the motor switch. And I saved it from the dump and its inow in service in my rear pole barn. Thanks for the videos!
Hi let ne start by saying i love yr channel! You know your shit! Which is Why i have a question for you.. I have a type 2 ekec drill 5amp.. That im using " for something else.. That requires i side angle.. And i need to control the speed of the drill externally how can i do that? I tried a dimner switch.and an extra larger ext cord wired to gether. Works on the lites not on the drill.... Im guessing not enough power. Help?
Please check the end of the description thanks!
So, lets see. You don't dumpster dive but you find these motors on the side of the road. You mean people put out a washing maching at the curb along with the rest of the garbage and you put the washing machine in your truck and take it home/shop to disasemble.
Joseph Nicholas yep that's how they do where I live. Along with a lot of other goodies!
Exactly...I don’t shop behind stores or anything like that. If I happen to see a large appliance on
the curb while going to work, and it’s easy to get, I grab it on the way home.
So you load a washing machine into your vehicle by yourself?
Everytime... the ones with the concrete blocks in the bottom aren't that friendly, but at that point I feel committed. The blocks help keep them from tipping over. Now that I think about it, the newer ones don't usually have the weight in the bottom. When I get home I have a hand truck for moving it to the shop. Then its right back to the road. I hating having any scrap metal in the yard.
Wow, I'm impressed.
Thanks for the great video and the very generous links to other great motor video. I keep adding your motor videos to my reference playlist. Love your channel.
thank you for suggesting the channel
Hey Jeremy, thanks for sharing knowledge. I was hoping you could help me. I have an AO Smith 1/2 hp ac motor. It has 7 wires coming out. How do I wire this to replace a table saw motor.
all you did is revers the capacitor wires right please help
I got a plunge router from Amazon and it runs backwards. They seller won't respond for a return.. Will I be able to fix it by doing this?
Excellent video...this should be what I was looking for on a motor I'm wanting to change the rotation on! Thanks!!
I find most of the motors, that I have, from dishwashers and washing machines. I schlep the appliance home, scavenge clamps, metal, wire and motor, then set it to the curb again. Usually it's gone in a day or two as metal Scrappers routinely patrol my hood for scrap. I am in Mississauga, Canada.
I mainly pickup old TVs and microwaves for the transformers. I don't see things with motors too often, I am in a city though so scrap goes quick.
You're awesome, Jeremy. This was very helpful. I need to reverse the rotation on an attic exhaust fan and for some reason can't find documentation or a diagram online. Thank you!
Awesome video! I have a question. Would there be a way to have the motor reverse automatically say by something breaking a beam for like a garage door opener? Pretty much I’m looking to make something move back and forth on a track on its own. Thanks