Three Ways To Run A Three Phase Motor On Single Phase, And the Pro's and Con's of Each Method

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I show in detail three different methods for powering a three-phase motor with single phase power. I show all the parts, how they work together, and the pros and cons of each method. The goal is to also explain how it works, not just “put the wires here”.
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Notes:
1. Potential relays come in different ratings. So, you have to be sure you get one that matches the voltage of your motor. The one I show in the video says is is for "any potential" as long as the motor is rated for 120, or 240. Details in the link below.
2. Affiliate links to Amazon items shown in this video. Amazon gives me a small commission if you use the links below. Feel free to shop around though.
Packard Start Capacitor
amzn.to/2QiC22w
Supco Potential Relay
amzn.to/2QiqhsO
Powerwell Run Capacitor 60 mf
amzn.to/2NzxSV8
Genteq Run Capacitor 35 mf
amzn.to/2CCBKAI
One example of a KB electronics VFD for 1 ph-3ph rated at 5.5 amps. Make sure you get one that's the right size for your application. Not necessarily this one.
amzn.to/2CDnOGA
Technical corrections
Nothing yet
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. Thanks for your understanding on this.

Опубликовано:

9 сен 2018

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Комментарии : 715

@donaldcampbell7894 5 лет назад

For the person just learning. Needing a grasp to understand. This guy is it. He is far more advanced than the learning person needs. Yet talks to us like we are people. So humble. He is why RU-vid was invented. To teach and help. Very smart man. Love the videos.

@1495978707 2 года назад

The second option has issues because instead of the phases being equally spaced at 120 degrees, you have two spaced at 180 degrees and the other is at best 90 degrees, but he had worse. So the motor is fighting itself, which is why it gets so hot

@bananahabit4231 3 года назад

I gave you a thumbs up in the first 5 seconds of your video, because for once a RU-vidr who cuts to the chase at the start and isn’t just pandering for longer view time.

@wayneparris3439 3 года назад

You are mostly correct. I have been running a shop made rotary converter for over 35 years and have made several. First in the U.S. we use split phase power that means that we have 2 legs of 3 phase delivered to your home and the phase angle is 120 deg not 180 deg. This supplies 2 of your 3 legs to a 3 phase motor so you get 2/3 not 1/3 of the name plate rating. The balance caps will bring up the 3rd leg along with back EMF to full line voltage. VFDs were not "a thing" when I first started running 3 phase motors on 2 phase power. For one motor sure they work well. But for the cost of a VFD, I would rather make a rotary converter as 3 phase equipment is much less expensive on the used market because all the home shop guys think they need to replace the motor.. which they don''t. Once you have the converter you can build your shop for much less cost and with higher quality equipment than a weekend warrior can with single phase equipment. Just another thought for the mixing pot.

@The_Most_Chad_Of_Chads 4 года назад

I’m a Journeyman Electrician and I’ve got to say watching your videos has taught me more than any class I ever took. Your videos are so informative yet so interesting. Awesome content.

@johngillon6969 5 лет назад

wish i had met someone like you when i was younger, I tried to understand this stuff over the years, and now at 70 yrs old I am starting to understand it when you explain it. You are so cool. thanks.

@jimmilne19 5 лет назад

Jeremy, you are a perfect example of the American pride of excellence through independent investigation. Revealing one's own potential through learning and then giving it on to others by teaching is you by example. I love this channel. 72 years old and still learning here. And you - I would like to meet you someday - are the teacher I wish I had had when I was 12 years old! Thanks for your fine example and your channel content. Impressed I am!

@jvmiller1995 Год назад

Using a seperate motor as a phase converter is a very old school trick. Many of home machine shops have done this. But if you are powering a small single motor the VFD with a phase convertor is the way to go. Amazon has some china made versions that will run a 2hp off of 110v for 80-90 bucks.

@caspere.8461 3 года назад

Nice job laying all this out. You sounded like a kid on Christmas morning finding out about potential relays. Potential relays used for bringing in a start capacitor were commonly used on hermetic refrigeration compressors for years. Your refrigerator should have one.

@rvhill69 4 года назад

you Sir are the MR Rogers of electrical engineering, people can learn a lot from your vids!

@danrobinson2490 3 года назад

I rarely comment on any how-to video, but I felt compelled to tell you what a great job you do with these. I have watched several, and the quality is consistently very high. You have the ability to convey complex ideas in a very straightforward way. Thank you.

@johnallison4904 5 лет назад

Jeremy, I've been watching your vids for some time, and you just keep getting better and better. Reckon you would have made a great science and tech teacher. Many thanks.

@lastresortrescueandrepair 3 года назад

Thanks for this explanation on how you can do this, I’d always heard “ it can’t be done “ but you proved it can be done. Thanks again !!

@DaleLiles

Great work! I love the effort and time you put into this. The fact that you covered such a multifaceted concept in so many different ways, in a DIY project, is incredible. Taking the time to share it all afterwards is just above and beyond. Thank you!

@merdurman 5 лет назад

Love your channel. I'm a machinist and I've really been interested in building my own shop. Give everything character. It's nice to see a video of someone I can understand. Learned a lot watching. Much appreciated.

@jlibb099 5 лет назад

This is a lot of information. Good to see you show the "not so good" options along with good options.

@scottyboy7462 5 лет назад

you are by far the best teacher of this electrical stuff ever. been trying to grasp this stuff for years. your giant 3 phase brain is able to convert this knowledge into little spoonfuls of single phase knowledge which my muddy brain actually comprehends. thank you sir and kindest regards from Massachusetts!! 🇺🇸