Start Capacitors & Run Capacitors for Electric Motors - Differences Explained by TEMCo

[@PDS24]

These videos need to be re-recorded with a better mic. Amazing information, but physically painful mic quality. These peaks actually hurt to hear.

[@danielebrparish4271]

Never listen to audio on youtube. Mute your device and click on the CC button. I also click on the gear icon for the settings then the Subtitles menu and change it to a larger font. I like to change the Video Speed to 1.5. This totally eliminates the sound of wind, passing vehicles, and most importantly annoying music.

[@ledbetterjack]

This is one of the best UTube videos I've seen. You explained the capacitors & their uses very well PLUS you blew one up for everybody to see how they fail. Yeah

[@MrAmeer49]

Sorry talk very fast with no clear , enough text for explanation

[@dhidhi1000]

and it's an ad

[@frederickasilvera3913]

@@dhidhi1000 uyi

[@jayhiz3514]

Best explanation ive watchd out of 25 vids. Thank u

[@VerifyVeracity]

Great video but one thing to note.... When recording the video I think you had the sound levels volume to high for your microphone., that is why the volume is kind of popping up on a lot of you words. thanks.

[@mandarkulkarni9999]

Tip ... never use headphones 🎧 in full volume for this video specially starting.

[@mjwdrones4all41]

I bought a couple of your run capacitors and noticed no country of manufactur on label are they made in China? HVAC Industry having lots of problems with China made caps don't last. I now have gone to Genteq and have better luck.

[@3melendr]

Very well done! All tutorials should be this easy to understand. I have absolutely no doubt now how to identify a running or start capacitor or how they shouldn't be used. Thank you!

[@thebeekeepersworkshop]

A great tutorial easy to understand and concise. Thank you.

[@nomercadies]

"IF" the clock on the back wall was accurate, you did this in one take. Until you started blowing stuff up, you just kept rolling without a bleep or hiccup. Sometimes people aren't just watching what you do, but how you get it done as well. Very good on both counts. Congratulations.

[@christopherherrick381]

I’m confused about you usage of “duty cycle”. I’ve only been exposed to the term regarding a DC square wave signal at a fixed frequency and duty cycle refers to how much of the wave is “high” vs “low”. Never heard it used discussing AC signals. I would appreciate any feedback.

[@jonnymiskatonic]

I have an older AC motor that is 240v and runs two capacitors. I went to fire it up and one of the capacitors smoked up. The other one was entirely cool and I noticed it doesn't seem to have any juice in it. The smokey one was spraying heck all over the place. My suspicion was that one capacitor went bad and it wasn't able to get up to speed and thus the centrifugal switches weren't able to kick in and it smoked the other one. Does that make sense or am I completely off the mark. Also for replacing these would I need 120v capacitors since it's one capacitor on each 120v circuit or would I need two 240v capacitors? Mine also don't have the bleed down resistor on them, not sure if that's necessary for the newer ones or not. It's an old saw from the 20s but the motor is definitely newer. Stumbled across these videos from your ebay auctions. Figured I'd see what you guys have to say on it.

[@TEMCoIndustrial]

Thanks for the feedback - we'll definitely keep the audio quality in mind for future videos.

[@democracyforall]

Why DC motors does not need these kind of capacitors???

[@TEMCoIndustrial]

AC capacitors are non-polarity specific, so it doesn't matter which side you connect the wires.

[@josephe.digiorgio2294]

Have an old Craftsmen 3/4 HP motor. Obsolete parts. It has a capacitor mounted on top. I have to say its a start. Not sure. Its dual voltage. Old cap was 233-280. Old cap part # was 37211 no info available any more. Not sure if that was correct replacement. Having problem finding any information on this saw motor. Old model Craftsman model is 113-12060. Some blogs say it was an old Emerson motor made for Sears. Old cap was shot. Just want to make sure I insert correct size. This was my dads saw , trying to restore it. Any help appreciated.

[@TEMCoIndustrial]

Just make sure that the new capacitor: 1. Capacitance is roughly the same: 233-280uf 2. Voltage is same or higher than you are powering your machine with. If you are using 120volts. Cap should be at least 120 volt rated. Higher is ok. 3. The new capacitor will fit in the can on top of your motor. Smaller is ok. Outside of that, you should be good to go! Good luck!

[@TEMCoIndustrial]

Some capacitors are 1000+ mfd, though many have low capacitance ranges as well. In your case, you could easily use a run cap in place of a start cap. Some capacitors are built with a "Pressure Sensitive Interrupter" design that causes them to fail before internal pressures can cause serious injury. The one we showed is designed so that the top of the capacitor expands and breaks internal wiring.

[@OcRefrig]

Good Video! Thanks for Sharing! Happy New Year!!

[@jorjiosapigao9069]

Sir What is the size Capacitor for 7.5 hp Electric Motor Pump. Start and Run

[@henryostman5740]

I suggest you check what came on the motor from the factory, different strokes for different motors. Problem is you might not be the first guy to change them and the one in it might not be right.

[@dtinman1199]

you have provided me knowledge and one day I will reciprocate by buyimg parts from you. that is how the world should be.

[@gatz271]

Is the voltage spec on a Start (or Run) cap an absolute value? In other words, will a 250v rated cap work ok in a 110v circuit, given the µF is correct ?

[@julieespanol6126]

Good day, Sir can Í asked the correct value of capacitor for 10hp motor 3 phase that can run single phase 220vac. Thank you Sir

[@EfficientMan]

I have a small 1.5KW tankless compressor, there is a capacitor just after the switch across L and N but it is not like these cylinders you show, it is a small rectangular about 2cm x 1.5cm. Is it still a run capacitor? If it is I was wondering how can it handle the current so small without oil cooling.

[@psirvent8]

It is definitely a run capacitor as first it's always connected accross the power as long as your air compressor is on but also these rectangular capacitors are always run and not start type. How can they handle current ? I don't know. But I know run capacitors do exist in two types: Metal casing and oil filled like in the video or plastic casing and resin filled (Epoxy resin is poured in the casing under vacuum then it cures and becomes rock solid).

[@sanjeevbhogal6818]

This is one of the best UTube videos I've seen. You explained the capacitors & their uses very well PLUS you blew one up for everybody to see how they fail. Yeah

[@barringtonreid7382]

Okay tell me a bote the run capacitor. How you know the size of capacitor to use on your 3phase motor?

[@JustMe-gx4xt]

Does the sound seem like its clipping for anyone else? Horrible sound recording.

[@danielebrparish4271]

Never listen to audio on youtube. Mute your device and click on the CC button. I also click on the gear icon for the settings then the Subtitles menu and change it to a larger font. I like to change the Video Speed to 1.5. This totally eliminates the sound of wind, passing vehicles, and most importantly annoying music.

[@mrbissi9377]

Great video. If the centrifugal switch is not releasing would this cause for the motor to draw higher current. My motor runs approximately 3amp without load and about 4-6 amp with load. I have found when the switch is not opening the current jumps to 22amps. The problem was a dead capacitor which I feel was the cause from the centrifugal switch not releasing when motor on. I find that the switch only doesn't release when the load is on the motor soon as I put some load after turning the motor on and off eventually the switch doesn’t release and the current jumps higher. The switch looks clean and no damage. Any help to diagnose is appreciated. Cheers

[@TEMCoIndustrial]

The switch should open just before the motor reaches full speed. Off the top of my head, here are a few common causes: Loose connection. Voltage falling off from undersized or too long supply cables. Bad motor bearings causing increased startup drag. Soot at the point of contact on the switch contacts (look for a small black spot) if yes, clean with file or sandpaper.

[@bullfrogpondshop3179]

Great tutorial, thanks! I hacked a Sears Garage Door Opener to power a meat mixer. Opener motor has a start capacitor with 53-64 mfd, 220 vac rating. Motor has a thermal cutoff (only designed to run for ~30 seconds or so), so I ran compressed air into the motor housing to keep it cool: kzbin.info/www/bejne/i5qygph7odyjoKs Everything ran fine with no meat in the mixer, but with only 4# meat the capacitor blew up after ~4 mins. After watching your video, I'm guessing the cap blew due to an overloaded motor. So I made a new driven sprocket to replace the yellow one in the video with double the number of teeth to reduce the strain on the motor. Before I spend $20 on a replacement capacitor with the same rating, does this sound like it will work? Would a higher capacitance rating be advised? Or is there another reason the original capacitor blew? Thanks!

[@RHH1095]

If a motor calls for a 5mF run CAP will the motor be damaged if you use a 7.5 or 10mF run CAP?

[@cocolove7591]

I have a 240v 3 phase 7.5hp 5.5kw induction motor for a heavy duty mixer and would like to run it on single phase as i do not have 3phase connection at my location. will i be able to convert it to single phase with cap or i wont get the amount speed from the motor?

[@SP330Y]

@TEMCo Industrial Power My start up capacitor on my compressor is only 31.5uF at 400v (2 terminal) if i buy a much bigger uF rating ie (400uF) would it make my compressor start easier. Mine at present doesn't always start up every time, sometimes it buzzes upon start up and freezes,if i spin the motor by hand it will start up, is my start up capacitor faulty and would it cause these start up problems??

[@Cp6uja]

Great video! One question: You mentioned that run capacitors have a 100% duty cycle so they can remain in the circuit. I want to use these capacitors for a pf correction project on an induction motor, but as my pf will be changing, i need to provide nearly constant switching in which the caps are introduced and taken out of the circuit. Is this safe to do for run caps, or should i use a different type of capacitor? Thank you in advance!

[@ikel6253]

I just bought this new- RoToM Brand -Dual Run Capacitor. 80+5 MFD 370/440v... -Would like to know, if theres anyway i could hook this to my lawn tractor for starting? There's no Battery! All this capacitor talk online is difficult to me! Ha -How would i wire it!?. It's got 3 prongs! Fan-Common-Herm... -The tractor only puts out around 4 amp's or so, from the Generator/Stator... No regulator! Just 2 wire's coming out from under the Generator/Stator-1 wire is for the Head-Light's... -The other wire has a diode, and goes to the battery.(which there isn't a Batt...) Btw- The solinoid run's off the magnet's on the flywheel! So that's seperate from this equation...Ha Tks...

[@dalenassar9152]

Like you said "SAFETY FIRST"...so, just some friendly advice...please get out of the habit of slapping your hand down on the terminals of capacitors! Even if you know/assume they are discharged. Kind'a like an 'empty gun'. One hand can give a very painful burn and shock, while two hands on caps can kill you. Thanks for the video!

[@morgan79347]

How can you tell from the lable what you need? Label shows 270W/270W 2,4A/2,4A S1 30 microfarads U (sub) c 200Volts Cos 0.98/0.98 The motor is a Heidolp it was in a paper shredder but the shaft gear was worn bad. I want to repurpose the motor.

[@MRM-wp4gr]

Is it a good idea to install a start capacitor if compressor run capacitor keeps blowing? Could this keep the unit working for a while until it can be replaced?

[@BoringFlightVids]

Quick question, Im building a AC circuit with an AC motor, and i was planning to use a motor start capacitor. The power supply would not be able to supply the current needed to start the motor, so i was going to use a capacitor to give the motor the higher current surge it needs to start. am i thinking of this correctly? or do caps not supply current surges in AC like they can in DC. Thanks

[@TEMCoIndustrial]

Start capacitors in an AC motor circuit don't handle surge current like in DC, rather, they delay the AC wave form as it enters into another winding in the motor. This gives you a different phase in the magnetic field to allow the rotor to begin turning.

[@pjwoo276]

You said a capacitor should be about 1.5 times the supplied voltage. I had a pump that ran on 120 volts but the capacitor said 300VAC. Does the hp of the motor matter for the necessary VAC ? There are no markings on it but I think this motor is around 1/2 hp. Question 1) Was that capacitor VAC bigger than necessary ? (1.5 x 120v = 180) I messed up and let it run after it pumped out all the water. Once I unplugged it, it would no longer start or run unless I spun the impeller by hand, then it worked fine. Question 2) Can you clarify and explain to me if it was a start or a run capacitor, or combination ? It says only 8 micro farads, so I guess maybe that makes it a run capacitor. So then I guess sometimes a run capacitor is all that's needed to get the motor 'to start' ???? Because...why ?

[@TEMCoIndustrial]

Judging from the capacitance, it appears to be a start capacitor. Start capacitors typically have a range of capacitances, while run capacitors give a single number. The values on start caps also tend to be higher than those on run caps.

[@onenewworldmonkey]

I have a 110v motor with 4 wires (2 start and 2 run) along with a remote start capacitor using 40 mf. I wired the run wires up and plugged it in expecting a hum (I disconnected the capacitor and all wiring), but IT STARTED UP counter clockwise. I switched the incoming wires and it started up running clockwise. I tore it apart and it has no centrifugal switch. I bought a used Corghi tire machine for $300 because the guy had the motor and switch out in a bucket. Two wires had .7 ohms and two wires had 7.6 ohms. The tire machine rotary switch was in pieces and had burn marks on it. What would tell the start windings and start capacitor to turn on and off????

[@christophertadeo6120]

Run capacitors should have a 1.5 vac ratio... 😳.. If your using 220 ac power source... Then your capacitor vac rating should be 220x1.5 =330vac rating, at least to compensate for surges..😀👍

[@barringtonreid7382]

Running on single phase?

[@frankmontez6853]

Both original and replacement run capacitor are same 12.5 MFD 440/370 VAC but new replaced blower motor has 7.5 MFD listed . Still good ? Seems fine , it working

[@TEMCoIndustrial]

Thank you for commenting, and we're glad that the video helped you out. If you have any other questions or ideas on future videos, let us know!

[@PrivateOrdover]

I need a lil help.. I am trying to get a pool pump motor to run off of my dc to ac inverter and just hums and then the inverter shuts down. I think if I add a start run capacitor to the circuit it should work fine. I am hoping .. it’s a 120 volt 12 amp 60 hrtz motor. Which start/run capacitor do you recommend. I am thinking a CBB 65 will work. But don’t want to blow the motor.. any suggestions ?

[@zdzichzcan2808]

What capacitors should I connect to the 400Watt generator, any suggestion please . I am using capacitors 8 micro farad and as soon as I plug in the light. the power is gon generator is 650 watts

[@cheeseheadfiddle]

I have a grizzly dust collector motor wired for 220. Seems the capacitor is bad. Opened it up and it’s a 300mfd, 120VAC capacitor. Am I right that that is the wrong capacitor? Possible that the motor was rewired for 220 and the capacitor was not changed? I got the unit used.

[@bababooey7576]

Yikes. my 31 year old Keeprite A/C's capacitor looks like it has some of the oil pooled on the top inside the rim. I know this is the weak point of this unit...Been running 31 years with no repairs (that i'm aware of, certainly not any repairs in the 16 years we've owned the house). Be nice to be able to replace it and keep this gem of a unit running.

[@0815russell]

What is Dual Capacitor and what is the different between a Dual and Single Capacitor? check tthis video out. It explains the difference between a Dual and Single run capacitor.

[@MYCHANNEL-on1cp]

have a single phase century 5 hp 1800 rpm motor, has a 330 volt 408 to 480 mfd cap that blew. it runs with a 220v cap i have in stock, similar mfd range, is that ok to use in an emergency?

[@236vic]

Hi will a microwave capacitor 1.1uf 2100vac 50/60hz can be charged by 12 volt battery ? Can it be used to between the battery bank and inverter to not let the battery bank take the brunt of electric initial draw. Saving battery. ?

[@solarsynapse]

How do I find what value start capacitor to use to replace an unmarked one? The motor is 230vac, 12A, 2hp, 1ph. I can not find any info for the 40 year old motor.

[@stuartsjalund6912]

Your video on differences between run and start capacitors is very good. What you did not mention is the larger capacitance will deliver a certain current for a LONGER (time) as required. One can obtain the same current level with a small capacitance but the time constant is much shorter, and this will not work! In reality, current delivered by a capacitor is determined by I=V/R. Remember there is a time constant! For example a voltage of 100 volts across a capacitor with a 1 ohm resistor across capacitor will deliver 100 amperes (time constant not taken into account,) Capacitors can more or less be inspected on performance by using an ohm meter on the megohm scale, across a discharged capacitor. Reading should be in the megohm or higher, Basically an open circuit. For quality, apply the operating DC voltage across the cap. to charge. Then install a DC Ma meter to view current flow into the capacitor. This determines the number of DC ohms of this capacitor, ( ohms =V/I ) and shows the power factor. The higher the Ma flow into this capacitor, the worse this capacitor is or is rising to 1, power factor. Power factor is PF = R/Z. It should be 0, or almost no current flow indicates a good capacitor! (R is extremely high.). FYI, there should be no heat detected at any time. To increase capacitor life, add parallel capacitors at the same voltage but adding to required capacitance only , not over. For example a 100 uf cap. can be split twice of 2 x 50 uf or more. Splitting the current demanded by the motor capacitor is always easier on a cap. when multi units are in parallel, and this results in added capacitor life! You might need hundreds of amperes for starting and the small R of the capacitor adds up when delivering lots of amperes, resulting in heat in the capacitor, a no, no.

[@MattsShop]

You are very well spoken, thanks for the vid!

[@alexbobawesomeness]

Matt's Shop was

[@MattsShop]

Alex Bob Network Are you not still well spoken?

[@bobbartos4616]

I have issues with a 220 volt dual capacitor motor, when the motor is switched on, the motor turns but then the breaker cuts in. I changed the start up capacitor with a new one, same issue. I returned the motor to the supplier and waited 5 weeks for it to be returned. Once I received it I immediately plug it in and it started and the bare motor ran. Once I put the impeller on and secured all the parts into the housing, it doesn't start!! Is the weight of the impeller cause a load for the motor not to start? I changed the start up capacitor again, still same result. I disconnect the breaker from the circuit, it finally started!! But then it died because the start up capacitor began leaking oil.....im lost!! Can it be the breaker at fault?

[@ncooty]

@1:32: It's odd when tech and industrial companies use "u" rather than the lower-case Greek mu for the micro symbol. I hope it's just that they don't have a Greek font, and not that they think it's a "u".

[@jhbonarius]

MAN! Why the high microphone compression settings! I cannot listen to this.

[@markfallensiangulube2616]

am using a schultz angle grinder, it has two capacitors, now I have a problem with a big capacitor from it which has some drums inside(capacitor with drums inside), what type of capacitor can I repress it and can a capacitors from a capacitors Bosch grinder work in it ????

[@saga2760]

Thank you, thank you, THANK YOU!!!!!! Looks like I was about to burn my ass… Thank goodness 😅

[@joebloe9901]

So I have 2 ac winch motors, both with 2 capacitors of the same size.....nobody on the planet can explain this. Do you know why they are the same size?

[@gatairengkong3956]

Hye.. im from malaysia ..My motor 110v 550watt 1680rpm.. what type and correct value of capasitor can i use for my motor

[@jpscreations6330]

Very informative, kind of a shame the audio is bad quality. Gotta watch those clip levels.

[@TheDeLaCruzSquad]

I would like to see the voltage meter readings when you are checking the capacitors in this video. Thank you

[@teslapark3406]

I wanted to know the power supply voltage you were using we understood it was AC but is that a 120 plug that you hooks to the capacitors directly I want to know it's capability can you put a wall outlet directly to one of those running capacitors?

[@tonybletas431]

Replacing a run cap on a bandsaw, the original is a 2 prong and the replacement has the same values but is a 4 pin. If they’re interchangeable does anyone know which pins do I connect to?

[@davidg8032]

Hello... Good video. Educational.... Thank You.... I've got a question that I feel you are highly capable of answering, even in your sleep. (that's a compliment)... I'm looking at 2 capacitors in my 5 ton unit. Both say "motor RUN capacitors" on them. The smaller one is a 10 MFD 440/370 which I would guess is actually for run. The second one is a 70 MFD 440/370 which I think should actually be a start capacitor. What I surmised from your video is that the 70 MFD seams awful low, plus again, it says on it "RUN" capacitor, not start capacitor. Any thoughts and response would be greatly appreciated. Hope all is well. Thank You

[@TEMCoIndustrial]

They are both as you suggested, run capacitors. One is for your condenser motor and the other smaller one is for the fan.

[@davidg8032]

@@TEMCoIndustrial So is there no start capacitor???? Thanks for taking the time to reply

[@TEMCoIndustrial]

Either the start capacitor is hiding in a different location or it is possible it uses a special high resistance rotor and no start capacitor although this is prety unusual.

[@davidg8032]

@@TEMCoIndustrial Again..... Thanks for taking the time to reply...

[@kka10001]

Thats all good, but how to identify a run verses start cap. Say you have and you don't know where it came from, how do you tell if it is a run or a start by just looking at the cap.

[@takethe101totarzana4]

Excellent demonstration. Good info on the differences.

[@JoeSmith-is5fo]

Excellent! Just what I needed to keep from blowing myself up. Got the new "start" cap installed and motor running.

[@TEMCoIndustrial]

This isn't something we specialize in, but you can look up info on power factor correction using capacitors.

[@faddy781]

hi.. i gota a 1ton AC works on 240v ac. its got 35uf cap for compressor. can i add capacitor bank to reduce amps draw. if so what consequences i have to face. kindly explain.

[@ArcanePath360]

Not sure if this is what I'm looking for. I made an Arduino powered motor by replacing existing electronics with my own circuit, but recently it intermittently doesn't start, just hums. The only way to get it working is to knock it hard against something and then it seems to run okay. Have done something wrong like run too high a voltage through it? It's happened on 2 of my motors now.

[@markpeterson1335]

How do you know what size compasotor to replace the compasotors with if there's no label or writing on the old compasotors and there's 3 compasotors on this air compressor and how do I find out what one is the start and run on this compressor?

[@OSDiesel]

I have (had) a 8 MFD 450V run cap that failed (FRIGIDAIRE 5304482883). It's in a window air unit. Can I substitute a 7.5 MFD 440V cap in my application? Specifically, your PN#rc0049?

[@TEMCoIndustrial]

I might try a bit more to find an 8uf cap but the 7.5 will likely work.

[@cacornett58]

Get yourself a SnufferStick to discharge thise caps. Much safer. Or make one.

[@ryanbeard1119]

In simplest terms, if a motor is running slow, it could be because of bad run cap, not start cap, cause that won't running at all then right

[@rustycalvera977]

you may need a capacitor to smooth out your audio signal...:)

[@TEMCoIndustrial]

Run caps could be use for PF correction. It would be important to be sure that the caps that are out of the circuit at any given time are drained before being reintroduced to the circuit.

[@sharrison55]

I have a dual run cap (herm, fan, c) that came off a window ac that I want to repurpose. Are all dual run caps running caps (ie will this thing blow up if I hook it up wrong like a start cap will) ? I want to hook it up in parallel with an ac motor to improve the pf. Do I just use the C and fan terminals or X and fan+herm? The specs of the cap are "7.5/40uf 240vac amc-24h07400b hpf ms 10000afc Sam wha... ". But I'll be darned if I can find anything on Google on it. What would the temco replacement part be?

[@craigrdorgan7314]

, I had to put a new start capacitor and run capacitor on my 3.7 3568 RPM air compressor motor got done installing everything puts attention on it to start the motor to build up air compressor if I had the same exact diagram it was on it previous to my run capacitor and start capacitor but it is starting to shoot small minut Sparks out the back anybody tell me if that is my brushes set too much do I have some too much tension on it or what can I do to fix the problem it is shooting Sparks profusely out the back what is my problem

[@jonram747]

hi do you have a video of 575 watts metal hallide bulb using a start up capacitor as in the moving head 575 watts dj light and what is the best mfd to use interms of this 240v capacitor if your using 575 watts metal hallide bulb

[@Seadogstudio]

I have 200w 220v 50Hz AC induction motor use as a fan. It come with a 3.5mF run capacitor from the factory. The cap fail (once) and look like about to fail again soon (motor slow down, higher running temperature) What can I do to make it more durable and economical to run? (change capacitor to a higher quality one?) Could (or should I) I replace the running capacitor with higher capacitance?

[@707SonomaComa]

I was looking at Baldor 6" Bench Grinders. They have approx. 14 different models! One of the descriptions says: Built for heavy duty grinding, powered by 1/3 hp Baldor PSC type motor (except 612E & 662E which are split phase) What would be better for that type of bench grinder, a (PSC) Permanent Split Capacitor or a Split Phase motor? Is one harder or take longer to start? Do you have to spin the wheels to get it going?

[@bobradley9618]

I am looking for a 45uf+/ 6% 440VAC/B 50/60HZ Capacitor for my air conditioning unit outside. This number matches the one on the bad unit. It developed a pin hole and the oil came out and it doesn't work. Can you set me up with one? I have a pic if you need one.

[@rogerk9050]

I have a 2002 Fleetwood Bounder 32' rv. One of the rooftop (Coleman Mach) air conditioners stopped throwing cold air because after getting up there to check it, there was oil everywhere on the wires and it smelled from the wire casing melting. Is it safe to just replace the hard start capacitor, or should I replace all 3. (There is a bundle of 3 there). Thank you for any thoughts and/or responses. (Roger)

[@TEMCoIndustrial]

Fortunately, start caps are not a ploy to rob unsuspecting folks of their money. Run and start caps are used for two different purposes. Run caps are used to continuously adjust current or phase shift to a motor's windings in an effort to optimize the motor's torque and efficiency performance. Start caps are used to briefly shift phase on a start winding in a single phase electric motor to create an increase in torque.

[@mooman4836]

I have a primeair compressor the cap is a 55uf 360v/250v I ordered a 53-64mfd 250vac start and 53-64 330vac start burnt both must need run caps? what do you have to get me working? thanks Mike k.

[@THOMASDRELICH]

Hey how come you guys don’t make capacitors that fit brushless generators. I am talking the half shaped moon ones. It would be nice to have a quality American made part available for Chinese clone generators. I love your other stuff as I use it exclusively in all my air compressors motors I fix.

[@shockwaveharry]

I have a 36V forklift with an ailing capacitor rated at 150uf and 250v (250 P.V.W.) The part number on it is FB-887 and it seems to be impossible to find. Would I be able to run an array of smaller run capacitors adding up 150uf?

[@SP330Y]

Hi I have a air compressor used for painting cars, when its very cold weather the compressor sometimes won't start up. When i pull the red switch up to start it, it buzzes loudly tries to start but doesn't have enough power. If the weather is hot, then most of the time it starts. It has gotten progressively worse at starting now it's about a 50/50 if it's going to fire up or not, when it does start it runs perfect and generates lots of pressure. If i helped the motor along with my hand by spinning the fan blades it does start, sometimes it starts slowly whilst buzzing then gradually build up speed then runs okay after about 10 seconds. Does it sound like the start capacitor at fault? , I do not have a run capacitor on this compressor. Could the start capacitor (faulty) CAUSE ALL THESE ISSUES?

[@pauleyler1731]

I have a Lakewood floor fan that runs slowly or not at all on low settings.It does not seem to be a lube problem. Any ideas.

[@sorayanamazi3723]

I have a 220 VAC sanding machine motor, replaced Now starts slow and take time to gradually get to proper speed (around 5-8 sec). Is it the wrong replacement mtor or starting capacitor? Should I increase the capacitance? Appreciate your help.

[@austinhydroax]

really do like your videos. I have a compressor and need to use a generator to run it. Vendor says don't use a generator. Is there a percentage increase on the size of the start capacitor that would make the combination of motor/generator a little more friendly and work together a little better? This is what I have now, Microfarad Rating: 324-389 165 volts. Thanks!

[@alejandroalvarez5259]

Hi guys, I have a problem with the electric motor in a Coffing chain hoist, which uses a device called SINPAC switch. Which is what disconnects the start winding. I want to know how to remove it or replace it with another updated system. If anyone can tell me how or provide a link where I can help I will be thankful.

[@CuringDaHOOD]

I have an amana washing machine that does not have a capacitor. When I replaced the water pump on the machine, it now will not work without me nudging it. Till then, just hums. I have an Amana Washing Machine Model NAV2330AWW.

[@bubbagump4274]

For preventative maintenance purposes I replaced two 17 year old 50uf x 440vac capacitors on a couple of 4 ton Trane a/c compressors, with TEMCo RC0052 replacements, in Oct 2012. Less that 1 year later Aug 2013, I discovered because one system was pulling high amps, that its TEMCo cap was 0uf (open) and showed no signs of swelling. As a precaution I checked the other system's TEMCo cap to find a 1/8" hole had been burnt in its side from internal arching and leaking a sticky substance all inside the electrical housing. The cap however measured only 14uf verses its rated 50uf. I replaced both caps with the original 17 year old caps. I want to know who is making a quality cap now days, because it certainly isn't the china born or the Chinese caps being assembled in Mexico.

[@rayg436]

can you use a microwave capacitor as a run capacitor on a treadmill motor?

[@emmettcoen]

Hey man.. Great video, my motor is humming, I swapped over a capacitor I had in shop, it started motor but cap exploded hahaha after a minute, I will drop a link for my problem, it is a pdf file with all parts listed, I think it is a run capacitor I need, it's the the 66uf 50Hz.. One on the list thanks you my good man

[@JohnJones-jj1df]

I have a rather large electric motor that needed a new cord wired on when I bought it. With that done, the motor ran but had no torque. I bought it to spin a table saw but it would not start. I could spin the blade and it would barely run. One capacitor is a 110v run/start and the other is a 220v run capacitor. I'm thinking this should be wired as a 220 volt motor? Thoughts??

[@stevetalbert2727]

Start Capacitors are used because the manufacturers can get away with less windings in the motor. The run cap helps to keep the motor steady under a load. This is all done to make them smaller and cheaper to produce. It's all about size and money. Period!

[@quintriggins6557]

Are common and run terminals on single run capacitor interchangeable since there are no markings?

[@metalplatesrule]

I have a 3/4 hp bench grinder with a PTC relay for the start winding. The PTC relay is bad but I can't find any for a 3/4" hp motor. Any suggestions?