What is Common, Start and Run?

Bryan is back with basics of Common, Start and Run as it relates to Single Phase PSC motors.

Read all the tech tips, take the quizzes

[worlboss]

Thanks you, that's what it called, psc motor. Alot of YouTubers speak like fridges comes in one type of motor. I can tell you are well educated

[rogerhill]

Simple clear concise explanation from a very knowledgeable teacher. Like the repetition!

[guitarhvac]

Nice video. I knew all of this, but it took me a lot of brain racking to figure it out on my own. This is one of those things that some guys work around for years and years and never understand it. Awesome crash course for clarification/learning and very applicable.

[jonerasmus]

I'm satisfied that I've learned something I didn't know so clearly before

[toyinorodare]

Thank You for the Update.
Your Student from Nigeria

[AZ_sunshine]

Bryan, Thank you, your video instruction is very clear and informative. You are an excellent instructor given you don't assume any prior knowledge on the part of the viewer. Also - you stick to business - no fluff (i.e. like listening to yourself talk), no annoying music etc. Excellent instruction all the way! I subscribed and look forward to learning from your other videos. Thanks so much!
ps thanks for the outstanding illustrations - very helpful for visual learners.

[greatdane]

Great explanation and graphics.
Thanks for sharing.

[emmanuelnelson]

Very good & clear explanations!! Any one can understand!! Great!!

[RANGOArts]

it was so helpful. i was trying to understand the wiring and i was so confused, but this video made it cristal clear. thanks a lot

[mike-ypuk]

Great short video. I'm a mechanic but I find you field of work almost as interesting as mine.

[TheDrewdaddy]

Awesome Video ! Easy to understand. Thank you

[jaykesapalaran]

Very informative..and easy to understand... thanks for the knowledge, god bless 🙏

[christiantorres]

Great explanation, very helpful, thank you very much.

[hugogarcia]

I like this video because is short straight to the point

[felixodhiambo]

I deeply appreciate this information it has opened my eyes

[MJ-mqqh]

Thank you brother, great and educative video.

[Garth]

"C" on the cap goes to "Contactor" one HVAC person told me how to remember where the wires get connected to the CAP.

[jkbrown]

This video for clicked with me to create what I suppose is the "story", which is how I remember things. I'm terrible with remembering random things not tied to their reason. So the story goes like this:

The run and start/aux windings on a motor must be connected to the same leg of power as they must be in phase with each other. The start/aux winding is then shifted in phase compared to the run winding by connecting the start and/or run capacitor in series with the start/aux winding to create a residual force between the windings' magnetic fields that gets the motor turning, and for the run capacitor after start up to also "tune" the motor for the most efficiency at the design load.

Common (C) on any component is almost always localized to that component and has no relation to (C) on any other component. For instance, power from the same leg as the run winding is pigtailed to the (C) terminal on a dual capacitor where it is forked to both the compressor motor via (HERM) and the fan motor via (FAN) terminals. Whereas the (C) terminal on a motor is where the run and start/aux windings are tied (commoned) together to connect to the opposite leg of power to create a complete circuit with the line power. Going back to the first "rule", when using a dual capacitor both motors (compressor and fan) run windings are connected to the same leg of power since their start/aux windings are also connected to that leg of power via the dual capacitor (C) terminal.

[jenko]

Start winding, wile running, is an artificial phase that is that assists in the correct direction.

[odeuslefrigoriste]

Great explaining!!
How i can wire a compressor in a contactor without transformer 24 V?