How To Wire a Furnace or AC Blower Motor

[@WordofAdviceTV]

➡ More Videos For Further Information: How to Wire A/C Condenser Unit: kzbin.info/www/bejne/gXTEn417qLGJe6s How to Wire Thermostat: kzbin.info/www/bejne/jJzRp31vhbSMetE How to Wire Air Conditioner Compressor: kzbin.info/www/bejne/fZmlhYmkaqh7eKc 10 Ways to Splice Wires Together: kzbin.info/www/bejne/n5nTf3aMoJaffJI How to Read Furnace Wiring Diagram: kzbin.info/www/bejne/aH62lpd3oM6lp9k How to Read A/C Wiring Diagram: kzbin.info/www/bejne/aH62lpd3oM6lp9k How to Read Water Heater Wiring Diagram: kzbin.info/www/bejne/iombhKh-gJaYqbs Basic Thermostat Wiring Diagram: kzbin.info/www/bejne/oHWvq2aIerWHja8 How to Wire Outdoor Condenser Fan Motor: kzbin.info/www/bejne/jJ2wmamtp9Wco6c Is Common and Ground The Same Thing: kzbin.info/www/bejne/rZqudZ9_ocechpY Electrical Symbols and Meanings for Switches: kzbin.info/www/bejne/pJi0dKCIlNxsh7c Ohm's Law Explained: kzbin.info/www/bejne/qXqvnWqmlK9ki7c

[@fefkimuslija4188]

Even though I know what are you doing, I was a HVAC tech and a Journeyman electrician, I like your videos, your style of explaining is so good...Have a good day from a Retired old man.

[@chrisbowling27]

This is definitely the best video I've seen on here on this topic. Anybody can make a video and explain how something works but that doesn't mean it was comprehended by the viewer. You have excellent communication skills.

[@jamkpa]

Thank you very much for demonstrating how to check the motor speed wires!!! On my 24 year old 2.5 ton York HVAC, both of my heat and cool board terminals were connected with the same black wire via with a short jumper wire therefore the heat mode was operating at a much faster speed. For the heat mode now, I replaced the split/jumper black wire that was going to both the heat and cool and replaced the heat mode side with the blue wire that was previously on the park terminal. Everything is so much better now. Again, thank you for your top quality DIY videos!!

[@lGAUGEl]

This channel has saved me about $2,000 in the last three years at my duplex. Great advice and instruction!

[@HBPrince2012]

The inflation probably ate up all your savings.

[@lGAUGEl]

@@HBPrince2012definitely, I didn’t vote for Biden though. Trump 2024!

[@user-hm5zb1qn6g]

Ridiculously well done. You could teach the rest of the world how to do How To videos.

[@studypartner9643]

Your videos just helped an old couple stay in their home. Thank you

[@franknielsen3562]

Hi Jay, you are the best teacher, I have ever seen. I watch a lot of these video’s, since I had some AC, DC and electronic’s, about 50 years ago in Aviation mechanic school. I also had my mine electrician certification papers.

[@TiktokDoctor]

First time hvac diy, took my moms 30 year old furnace apart for a mighty cleaning. Thanks for the great knowledge straight to the point and very well spoken .

[@ahmurray8269]

Just finished installing new blower motor and this video was very helpful. Thanks for all your great videos, you are my first stop for help on appliance and HVAC.

[@HectorHernandez-zq7gq]

i start hvac school in august and i feel like im getting ahead by watching your videos. I wont feel completely lost now. You have a great way of relaying your knowledge to others. Thank you for your awesome videos.

[@Garth2011]

"Rotation" has two views. Shaft end and Wire end depending on how the fan blade or squirrel cage will mount or how the motor will mount, shaft upward or shaft downward. You might also comment about how to find HVAC parts because most of the supply warehouses protect their industry service tech by only selling to licensed general and/or HVAC contractors. Great review.

[@JohannnesBrahms]

Wiring mysteries revealed! Very well done! Ten years ago I replaced the blower motor in my furnace and had to hire a tech to figure the wiring out. There won't be a "next time" for my thirty-plus year old unit, but you revealed how very easy it is to do. You are wonderful.

[@WordofAdviceTV]

Thanks Johannes! Sorry to hear about the wiring hardships. May your furnace still have many more prosperous years!

[@twizted3k]

Been trying to help out an in-law since yesterday. Doing research and finding wiring diagrams, trying to figure out how a furnace works. This video right here is exactly what I needed. Thank you!!

[@tgriebe]

Best HVAC channel on KZbin.

[@eddo5617]

Capacitor job is to start the motor. If you disconnected the capacitor from your motor and turn the power on you will hear humming noise however if you rotate the shaft by hand your motor will start spinning to whatever the speed setting is. Great video by the way ! Good job bro

[@exgenica]

Would the capacitor's lifespan be increased if one line of the capacitor is automatically disconnected AFTER the motor has started up and is spinning (and of course auto-reconnect it AFTER the fan is switched-off again)? Hiring service-people to do the routine job of replacing capacitors seems to cost people a LOT of money in service calls.

[@eddo5617]

Very good thought but unfortunately the circuit doesn’t work that way. Just think capacitors are like batteries, they will lose their ability to hold charge overtime and eventually decreased their capacity below useful threshold.

[@exgenica]

@@eddo5617 That's ususally because the electrolyte degrades over use/time...often due to heat, chemical processes, over-volting, seal failure, and a few other things. But since the caps are often mounted on or very near the motor itself, of which many do get *very* hot, I was just wondering if disconnecting one, once the fan is "spun-up" would help reduce the electrolyte degradation by any significant degree. I do know that during use the electrolyte itself often also heats up to some degree...and that in turn can further accelerate the electrolyte failure. I just don't know the particulars in an AC motor circuit.

[@ernieolson7486]

Man, it is a joy to listen to you. I have a degree in engineering and you are A VERY GOOD TEACHER AND SPEAKER. Thanks for what you do.

[@jokerwisdom]

2 dozen videos later and have finally found a good one! thank you !

[@mogbaba]

I don't think there is any video or article on internet which describes wiring alone, let alone if anything can be so detailed described the subject. I am the person you can confidently call clueless. I have collected a few motors and wish to wire them, only after watching this video I could wire them correctly, thank you very much.

[@restorativesj2955]

This video saved me $1000 today! Had to replace the motor and add a capacitor since my old furnace didn't have one and the new motor needed one. The repair guy wanted $1100

[@d.t.1470]

Superb - I have a degree in Electrical Engineering and I kept expecting you to make a mistake or fail to explain a minor technical detail. I could not have been more wrong. Superb !!!!!!!!!

[@WordofAdviceTV]

Thank you! Glad to hear you didn't see any obvious mistakes :)

[@peteowens3033]

Thanks, a friend just dropped off a blower with a similar motor he saved out of his air handler he had replace a few years ago. Asked me to wire it to switches so he could make a simple box cabinet to use it as a fan in his garage this summer. I knew the basic principle of how they work but your well explained details sure saved me a lot of time figuring it out on my own. Thanks again for all the help. :-)

[@jollyscaria1922]

Speed and power samll wire rethion . White comon N..read low speed.. black..ac serped high..... bleu mediom low seepwhit mediom pon 110 N and mieiom poin power pont..

[@jollyscaria1922]

Brown and whit mix cap.. gerecap 2 wire .

[@BlueFox0018]

Thank you so much for doing these videos. I worked with my boyfriend who had an age gap with me and he was teaching me what he knew but passed away barely a week ago and I want to continue doing what I'm doing but there are areas I need refreshers in because I mostly was at his side to bring him tools and the like. A lot of it I know, but he was old school and there are things in this video that I'm not sure even he knew.

[@CharlesCash-wj7ce]

I never make comments but...Man you are a great teacher!!! Keep it coming.

[@mariamchacon7031]

You are the best HVAC guy in explanations, love your Chanel!

[@jameshill6722]

You really know to break it down so that we the viewers get a better understanding. You rock

[@kimbeldonayre]

I'm currently taking my G2 license in Canada and I'm struggling to understand my teacher even when I show up an hour early and leave an hour late. You did an amazing job explaining everything in a a simple and effect way. Going to recommend you to my class for the other students who need help. Thank you for making the video.

[@WordofAdviceTV]

You're welcome! Glad to hear the video is helpful. Thank you for sharing and good luck with the schooling! (And I can totally understand that... Some teachers are easier to understand than others..)

[@JereMiles-DarkGlassStudio]

between this video and the other video on replacing a blower motor I got mine replaced and saved about $500 in the process, you are awesome! thanks so much for making the videos and answering my questions about 115V vs 200-230V motors

[@WordofAdviceTV]

Glad to hear you were able to get it fixed! Thanks for coming back with an update, stay cool! ;)

[@rutheking1]

Thanks for the great information.I learned alot in a short amout of time.

[@sonnyburnett5514]

A very good as well as easy to understand instructional video. My blower motor ''went'' last weekend due to it's bushings going bad. For some reason they didn't put any oiling ports on the ends of the motor to oil those bushings. Since it's currently in the middle of winter & I'm goin through a pretty powerful cold spell, I ''had'' to get something going quick. I had an old ''scrounged'' blower motor on a shelf in my basement that fit just fine (a little better in fact), but it was only an 800 RPM motor instead of a 1000 RPM as the original was. I like how much better this slower motor is heating my house, but since it's a single speed motor, I'd probably have some issues with the cooling coils freezing up during the summer or A/C season. Since it is a ''scrounged'' old motor, I need to replace the original with a ''new'' motor. I typically fix everything I have if I can if I'm able to get access to what I need so putting a ''new'' blower motor in my furnace won't be that hard (especially since I've already torn it all apart to try to fix the original & replaced it with another). I've researched a particular motor, but all I've been provided with is a brand name, part number, & wiring diagrams. I haven't found if it has more than 1 speed & what speeds they might be if it did. As many leads it has, I believe it surely has more than 1 speed. Since the color of it's wires are similar to those on your motor, I was wondering what the 2 slower speeds were on the motor you used in your demonstration. If I could get a replacement motor that had a slower, approx. 800RPM speed along with the 1075 RPM, I could wire in a switch so I could switch it between the 1075 RPM for the A/C season & to a slower speed during furnace season. I'm amazed at how much better my furnace heats my house after putting this 200 RPM slower motor in. It seems like the slower air flow is able to heat ''everything'' in the house along with ''every'' part of the house so it doesn't need to run as long each time it runs. I could literally feel the house getting, feeling, & staying warmer after it ran for the 1st time & it feels warmer in here even after setting my thermostat 2 degrees lower. It's been a surprising experiment I was forced to undertake in the cold of winter (it's 0 or below outside now as I'm typing this) with surprising results. I would like to know what the other speeds were on your ''demonstration'' motor. Again, well done video, Sir.

[@amike4211]

You might just be my hero after being quoted $1200 for a blower motor.

[@dmaverick2396]

This was super helpful. My gas furnace blower motor is either bad or the capacitor is bad. The motor thermal protection appears to be being triggered so the effect is the motor cycles .... 30 sec run...30 sec off. This was strange and initially thought it was the control board. Then I checked that control board power was staying steady at 120 volt and all burners and controls were fully functional. I have learned a ton from your videos , thanks!

[@blaineenriquez3135]

I'm in Chicago.start taking class and it helps me a lot.I'm from South America and always see your videos.thanks.

[@andrewjsola]

Hands down one of the best KZbin Channels I have ever come across. I am a subscriber! I really enjoy your videos and because of them I've felt confident enough to fix my own HVAC issues. Earlier this year, after watching one of your videos, I replaced the furnace control board having never been exposed to an HVAC system. Ordered the replacement board on Amazon and saved myself $$$$. Today I was searching for a video on blower speeds and came across this one. Excellent explanation on how to test the speeds and wire them up accordingly. I've been investigating an issue where the fan on my main floor system would not operate when set to ON, but would when set to Heat or Cool. I read in the comments of another video, that the particular board I have has to have a speed wire connected to the Heat LO tap on the control board. So I grabbed the Med Hi (blue) from park, plugged it in and now the fan works in On. But I am wondering if I should swap the Med Lo (yellow) which is currently connected to the Heat tap, with the Med Hi to ultimately increase the airflow while heating? I noticed in this video you suggested Med Hi for heat, so I was curious if the Med Lo was incorrectly connected when the system was installed. I've seen a lot of forums that have debated this and a concept about heat rise temps or something.

[@alexcamacho3680]

After many books and articles read, I came by this page and you have cover more in a few minutes than hours spent reading. Nicely done A+++ you have a new subscriber here. Thanks!

[@WordofAdviceTV]

It's good to hear that my video was helpful! Thank you for watching, subscribing, and leaving a comment!

[@arthurbland7605]

Very well done !! If you are not an instructor - you DEFINITY should be. GREAT VIDEO!!

[@antoniovazquez3560]

Thank you very much for your videos. Resenly,I just graduated from A/C,and your videos help me to remember and practice more.However, I subscribe to your channel,and I put hand up! Thank you very much for your help and support have a great day.

[@jamesstrickland2313]

thank you, i learned a lot from this. funny how things look so intimidating, but when explained well like this, it’s not so bad.

[@Shawshanc]

Thanks for explaining the wiring the way I needed. Showing resistance for each speed and doing a simple bench test gave me the gist of it better than all the confusing instructions that came with the new motor.

[@WordofAdviceTV]

Glad to hear the video helped! Thank you for watching and leaving a comment!

[@Turbochapman]

This is really helpful. I need to replace the fan motor on my heatpump tomorrow and when I replaced the blower motor in my furnace a few years ago i wired it to high speed because I wasn't sure. Now I can double check my work on the furnace and slow the fan down, she runs hard and is pretty high volume out of the ducts

[@Ratlins9]

Jay, been watching you for a long time. Your videos are so well made with close ups and step by step instructions. Thank you for all your help.

[@conradklassen7712]

Thank you very much. 30 year's on my motor have replacement part's will do my own install when needed now I know where all the wire,'s go. Enjoy all your videos

[@RC-Heli835]

That's very handy info man! I wired my last blower motor in several years ago but had to be careful to wire it back exactly like it was since most motors I'd dealt with only had 3 wires. Its not so complicated once you realize 2 are for the capacitor, 3 for the motor speeds to hot lead and 1 for the neutral or common. Also love the extension cord connection.

[@martinjuarez333]

Thank you so much for taking your time to do this videos,you talk about every step very clear you are AWESOME! I have learned a lot from your videos last night I fixed my doughter's furnace and I did it the way you explaned in one of your videos thank you so much God bless you and all your family.

[@merlynsaunders3042]

Hey Boss Man;;;I have to give you BIG Time credit;;;Just what I been longing to learn for over 2 months to use one to extract drywall compound dust from a small room....You were on point;;;Thanks so much

[@benjaminwhite2747]

I wish you tought my class at school. Or maybe teach my teachers how to teach. Great videos man! Very helpful

[@luv2bholm]

Thank you so much for your detailed explanation! Our furnace is almost 20 years old. The prices to replace the motor and capacitor is $1,440. Eeek! I'm going to replace my capisiter, disassemble my fan and motor, clean them and oil up my motor a bit to keep it running smoothly. So$10 worth of maintenance. Even if I have to replace the motor, it's hundreds instead of thousands.

[@WordofAdviceTV]

Oh yes! I would do it myself too if I got a bid that high... With all the how-to videos nowadays on KZbin, all you need is the willingness to try :) Thank you for watching and commenting!

[@AM-sq5ut]

Thank you Sir! My York just stopped blowing last night/yesterday... Very comprehensive and descriptive video. I was thinking my motor was bad (expensive} but I now know that I need to test my capacitor also (much less expensive) since without a good one or unplugged, the motor only hums. That is exactly what mine is doing after the gas burners heat up and I hear the click for the fan blower to kick on.

[@rglantzy]

This is a really well done video. Very good organization and presentation. No extra nonsense. Just the real info needed to wire up one of these motors. Thanks.

[@TheAusherGuy]

Thank you for this lesson. You sir, are a gentleman and a scholar.

[@alanjackson4397]

Most informative HVAC video I’ve seen I really like your detailed presentation thanks

[@WordofAdviceTV]

Thank you! :)

[@j.jarvis7460]

Literally the best explanation on all of youtube. Thank you. You really do have the knowledge for what you do.

[@ianwatt880]

This was clear, concise, complete, and excellent. Thank you!

[@WordofAdviceTV]

Glad to hear that! Thank you!

[@mmhsn07]

Fantastic and easy to understand explanation of the blower motor speed settings and its wiring. 10/10 - Welldone indeed!.

[@WordofAdviceTV]

Thank you! I'm happy to get a 10/10! :)

[@mr.roberts3886]

I definitely give you props on how thorough and detailed your videos are... really good stuff. Other guys on KZbin definitely leave out some things but you make it to where a homeowner would be able to try and tackle some of their own hvac issues. As a tech myself, I enjoy watching there videos as well since I'm fairly new to the trade. Keep up the good work and hopefully your videos don't take too much work away from us lol!

[@WordofAdviceTV]

Thank you! Glad you liked the videos! And I am sure there will always be plenty of people who would rather pay someone than try to do it themselves. I would venture to say that that is the majority actually. It's the minority that watch videos like this who would likely attempt to fix their own stuff even without a video.

[@bamafanforlife7837]

Man your response is dead on for the not so fortunate. 🙄

[@captainronwertz1008]

I thought I was an excellent teacher...you mi amigo are an exceptionally good instructor. Thank you for a video worthy of recommending. In this day and age, have you ever thought of starting your own Online College, or Trade Tech School?

[@dynosantos930]

I appreciate your videos I’m getting into HVAC and I’m grateful to have come across your videos.

[@WordofAdviceTV]

Thank you! Glad to hear the videos are helpful! Good luck with your HVAC career! :)

[@barat8560]

God bless you brother every day I learn something from you I spent alot of my time watching your video I love how you explain very great teacher thanks again for your time

[@davidpetersen4208]

Thanks for the help. The video gave me the confidence to change my dead blower motor.

[@pawncakesNrofls]

You are a natural teacher thank you

[@floydalbright1214]

You are an excellent instructor , thankyou , utube is lucky to have you on .

[@osmansebsibe2824]

My favorite Hvac instructor 👌

[@heatherandtimsharp]

Dude, u saved my bacon. Been trying to figure this out for a while.

[@Knowledgexxxx]

This is like going to college to learn all about hvac. Great video

[@workgoogle7517]

LIFE SAVER!!! just changed my motor hopefully that fixes my issue but if it does im confident ill be able to goto the next item that maybe the issue the Inductive motor

[@faustogonzalez8397]

Absolutely outstanding video, your videos are extremely well done. Lighting, audio, explanation, teaching Outstanding!, Thanks so much and keep up the Great Work!,

[@braydon44884]

Thanks bro. Just started taking hvac classes and this was a big help!

[@lihongzhang1627]

Great lectures! Much better then my college lecture! Many thanks.

[@memo.a937]

You saved me a technician ❤️

[@danadixon8678]

Thanks so much! I am re-purposing a blower motor and your video perfectly answered my questions.

[@naadiramubarak4593]

Wow! Your wife is so lucky!! You can do everything! I only needed the washing machine reset video!!

[@WordofAdviceTV]

I wish I could do everything! I only know a little bit there and there :) Haha I love how you ended up on this video even though you came for just the washer.

[@dannymoreno03]

Best teacher ever👌💯💯💯💯💯💯💯💯💯

[@karlq7798]

i can watch this again because it has so much useful information.

[@Littlefreetime]

Very very EXCELLENT! Love how you covered so many different options one mite come across.

[@aaronbutler9629]

You are simply the best at making technical videos for HVAC! I have watched a lot and yours are the best by far! THANKS!

[@ghazaliaqeel9415]

I like all your video, the way you explain in such a simple and easy way that helps very easy to understand. You take the viewer with you. I would like to see your video to repair psc blower motor. Please send the link. Another question, I am replacing new psc motor, all aspects are matching, except original motor is 5.1 Amp and new 3.8 amp. Will it make any harmful affect?

[@miankhurshid]

This is like going to learn to learn all about hvac,, Good explaning Great video

[@alconk7129]

I just watched this and if you do have a three speed motor you put the heat on the middle speed and the low speed on park or fan. Didn’t you say you want the heat on low speed? Great videos! Even though I went through hvac school I’m really enjoying your videos and you explain items more in detail than the school did.

[@classic287]

That cap might be bad on mine? The air handler motor on my a/c quit running yesterday. I've been watching your videos over again and I think I found the problem. We had a big rainstorm today, but I will check it tomorrow. Thanks again Jay. 😊

[@WordofAdviceTV]

Capacitors often fail after a rainstorm for some reason. (probably due to voltage spikes) Hopefully that's all it is for you Mr. Classic. Good luck!!

[@classic287]

@@WordofAdviceTV , Well, I cleaned the unit with a hose before it quit. Maybe I got that thing wet?🤔😁🙄

[@classic287]

@@WordofAdviceTV ,My air handler doesn't have a capacitor hanging on the housing or anywhere near it.

[@WordofAdviceTV]

@@classic287 Oh boy.. We are talking about the air handler inside of the house right? An easy way to find it is to simply trace where the wires from the motor go. Another possibility is that you have an ECM motor which does not have a capacitor. Those motors usually have a lot of wires coming out of them that are the same color. Does your unit have a control board? Is it blinking any codes?

[@classic287]

@@WordofAdviceTV It's a package a/c (outside complete). No control board. Motor has 2 green wires, 1orange, 1 brown and 1 black. There is only one dual run cap. Endura FM18 motor, 3/4hp, 230vac. Part # 51-101920-07-01

[@tptm100]

As I watch I say to myself what if etc. and 5 seconds later you are covering what I was thinking, Jay you're the best!

[@WordofAdviceTV]

Glad to hear the video didn't disappoint! :) Thank you for watching!

[@studypartner9643]

@@WordofAdviceTV seriously ty

[@studypartner9643]

@@WordofAdviceTV hey I need you to know by your videos you seriously saved an old couple. He is 78 yrs old on oxygen and the lady suffered from many serious problems. Anyway they are warm now and we have to thank you for your straight forward teaching. They are on limited income and have no spare money

[@WordofAdviceTV]

@@studypartner9643 That is great to hear!! I'm happy to know that my video helped! Thank you for leaving a comment.

[@studypartner9643]

@@WordofAdviceTV yeah I studied your videos and was able to get their heat on a few times. Once it was the pressure switch and another time it turned out to be the board. But if it was not for you it would not be running so I had to send out a thank you. They would have possibly lost their home because they are a check away from going homeless. Can't thank you enough

[@simplyvideos3910]

This is one of the best videos I have ever seen. Thank You

[@bender1300]

Thank you for this. Easy to follow and concise, most excellent.

[@ogrely]

Straight forward information with clear demonstrations. Well done!

[@MrUpdownloader]

Very clear video. I will use this info for the Coker hood motor. Almost the same principle also works there but there is no reverse option of course 👍

[@jollyscaria1922]

Welcome d

[@poq600]

Hi Jay. I'm Peter. Love your videos of course. Not being critical, just suggestive. Would be helpful to show on a note which fan direction, while facing the shaft, is clockwise, clarifying the reverse plug. Also remind us to be careful of cap. Terminals when unplugging during test procedure. Great stuff.

[@jayhockley8841]

This is an Excellent Video and exactly what I needed to see ! Thanks ! I guess the only thing You didnt mention was when You grabbed The Capaciter without Grounding it first . I was told this can give you a bad shock ( unless you ground out both terminals first ) but That was just what I was told . Thanks , again .

[@TheDuffguy619]

Amazing video. You taught me how to diagnose our motor. Thank you.

[@saintevenevets]

Hey thank you so much I'm an HV AC installer mostly new construction that was so helpful very much appreciated

[@stoptellingmewhattowrite]

Could you combine two functions into one tap (i.e. cool and heat both running in medium setting)?

[@lex6794]

Thanks again Man! The electrical part is a pain in the but for me!

[@frontlinemedia4270]

What a great video explaining everything. This guy is great

[@davidgoodwin6312]

Hi Jay, your videos are excellent and inspired me to repair my HVAC fan that quit. I installed a new motor and it now comes on for a few minutes but then shuts itself off---what may be wrong?

[@davidgoodwin6312]

I found the problem---I had both wires on the same side of the start capacitor. Moved one wire and it works perfectly.

[@brentjohnson6654]

Thanks for the video. I have a used fan I want to DIY into a exhaust fan for an outhouse and this has been helpful.

[@EdmundoMendezJr]

You taught me so much in this video! Thank you for sharing your knowledge.

[@Heartfeltzero]

Thank you so much. Helped me out while I was on a job

[@davepompea]

13:00 Capacitor - You have it backwards, It is to get the motor running, not keep it running. If you had turned the shaft by hand after plugging it in, it would have sped up to running speed and kept running.

[@jamarkh80]

Actually, he's right. There are 2 types of capacitors, start and run. For this application a run capacitor is required.

[@ryanhurst8661]

It’s a little confusing, yes it is a run capacitor but it is connected in series with the start winding in the motor. In order for a induction motor to spin you need a rotating magnetic field. A 3 phase motor has 3 windings 120 degrees out of phase with each other to accomplish this. In a single phase motor you have 2 windings , a run winding and a start winding. By placing a capacitor in series with the start winding you achieve a phase shift where current and voltage are 90 degrees out of phase thereby simulating a rotating field to get the motor started. daaj is correct that without the cap you can start the motor by hand by giving it a boost in either direction and it will continue to run in that direction. A little more explanation on the phase shift from the cap , there are 3 types of loads , resistive, inductive , and capacitive. In a pure resistive load voltage and current are in phase with each other. In an inductive or capacitive load voltage will either lead or lag current depending on which type. Hope this helps a little. I love this guy’s videos though, I’ve been an electrical contractor for a little over 20 years and just starting to learn HVAC , always been interested in it and these videos are so helpful. He is very good at explaining and teaching in a way that is easy to understand.

[@indrasuresh1837]

@@ryanhurst8661 good job explaining

[@Kilcrops0914]

This uses a run capacitor, not a start cap so he's right

[@beotheguitarist]

Best detailed explanation on blower motors. Awesome!

[@giftchigozie2777]

Ur teaching is great and simple God bless you

[@LS-rb2sd]

Thank you. Very helpful! I was apprehensive at first, but this video gave me the info i needed to confirm the details i needed.

[@richardlemke286]

I concur!! One of the best! Component ID, Theory of operation, troubleshooting techniques, etc. You would be a welcome trainer of Soldiers in my Taskforce!! Can you duplicate this for a v 208-230 motor please?