How To Reverse the Direction Of Universal and Induction Motors: 015

I will show you how to reverse your motor for clockwise or counter clockwise rotation. This is a followup video to how to wire motors including universal motors, DC motors, Induction motors and more...

Link to video about Centrifugal Switches

Link to my favorite videos on motors and how they work. I have watched these videos many times and they are still good.

TPAI

Defining shaft direction

Corrections and omissions

At time 11:15 I say the speed controller added resistance to the circuit. I thought it was a variable resistor like a rheostat. Actually it uses a Triac to rapidly switch the power on and off.

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Final Note:
PLEASE UNDERSTAND...I receive hundreds of messages on all platforms (email, Facebook, comments etc) asking for advice, and help with projects. At this volume, I simply can't do one on one advice. I have tried to help enough times to know I should never assume I have all the relevant information in the message, and even basic questions can produce a lot of followup questions. I do read all the questions, and if I get the same ones over and over I make videos about it to help lots of people. Thanks for your understanding on this.

[talshaharfamily]

Your professionalism and clear information delivery and clean language use is refreshing and enlightening. Thank you, blessings, and keep it up!

[mwatkins]

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

[ronbpalmer]

I find myself coming back to your videos over and over for two reasons when I need practical implementation information 1. You address the needs of someone teaching themselves and 2. Your explanations are very well articulated.

I think the fact that you taught yourself keeps you focused on the real world which is very valuable. People who are formally educated are often good at delivering theory but fall short in practical application. I highly recommend your videos to anyone who needs to actually get things done.

[cmgray]

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!

[joerosburns]

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!

[tonymann]

Getting back to basics- I love it. About 10 years ago, Bill Mayo, a Shopsmith rebuilder in Florida, showed me how to take a Shopsmith headstock motor apart & connect a DPDT switch to have both forward & reverse motor rotation. Kinda like surgery. Like you mention, simply looking for the thinner wires made it easy to locate the starting winding. After the first one, only took 15-20 minutes to do. Bill had spent some time in a motor rebuilding shop. Not sure if they even exist anymore. Thanks for sharing.

[PhillipShockley]

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!

[lesstime]

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 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

[aisotton]

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!

[zsemberigabormate]

Precisely explained!! I got the answer for the question I was looking for for 2 days! Awesome, I owe you!

[georgeeads]

I like the way you explain how the motors works. You explain it simply so regular people can understand. Great video.

[sampickett]

Found your channel while surfing. I am now a subscriber. I love great teachers like you.

[jimhester]

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.

[Edgardocelectric]

As a electrician your video is a good refresher, I did motor control back when I was an apprentice back in 70s

[echobot]

Thank you for saving me a lot of time with my project! Your delivery is excellent.

[dfu]

Again outstanding. I thought the speed of your explanations and depth of specifics was perfect in this video. Thank you so much!

[MJCPeters]

I am more knowledgeable today than yesterday, thanks to you!

[Tim-kryan]

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

[bobf]

good video.straight to the point and no distracting music.

[boomblooka]

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.