Single Phase Dual Voltage Motor Wiring Project

This video will walk you through how to determine the various components of a single phase motor with an ohmmeter, and how to connect a dual voltage, single phase motor for operation on either 120 v or 208 v.
It's a long video, but it covers everything you need to completely understand the initial wiring on our single phase motor trainers. Hope you enjoy it.
Determining Components with an ohmmeter: 25:15
Low Voltage Connection: 40:07
High Voltage Connection: 53:46
How you're going to screw up the polarity of the Run Windings: 42:56
Great link for more info: www.egr.msu.ed...

[@David-ut6sg]

this helped me understand the wiring of a six wire 240 volt motor and how to reverse it, i just wasn't understanding the wiring and you made it seem easy

[@amirCJson]

Thank you very much for the explanation, very helpful 🙏

[@tektonelec4695]

Nice video Pete. Thank you.

[@HIIAMALEXX]

thanks for sharing knowledge

[@AndyFletcherX31]

I guess you could connect the two run windings in parallel and measure the inductance, swap one of the windings around and measure it again. Select the configuration with the highest inductance.

[@PeteVree]

Not sure if an Inductance meter would work in this instance. I'll add some info in the next video on how to test voltage across the Run windings (leaving one connected at a time). Same polarity would read minimal voltage, opposing polarity would read source voltage)

[@MrKidkiller159]

High voltage wiring line 1 line 2 but what happened to the neutral

[@PeteVree]

It's the "higher voltage" rating on the nameplate. With a single-phase 120/208V, the 208V or higher voltage would use L1 and L2 from the supply. No neutral required.

[@MrKidkiller159]

@@PeteVree ok that makes sense to what I see in this air compressor in trying to hook up. Two black an green (ground) . 1/2 hp motor dual voltage motor. Thanx . Video helped me out.

[@nickcourt4735]

Cool! I just had a question about this on my c of q today I think it was how to reverse a dual voltage single phase 120/208 I put 5 and 8 Hopefully its right!

[@PeteVree]

5 and 8 is definitely correct. Beers are on Nick if he passes his C of Q!! All the best. Pete

[@nickcourt4735]

@@PeteVree thanks! I could defenetly go for some george brown pitchers! Ill let you know how I did

[@mikeadler434]

👍👍

[@davidvanderbyl4015]

I'm a little disappointed that you glossed over the fact that the start coil would not get 120v in the 240v configuration, due to the series/parallel wiring. It would get around 100v.

[@PeteVree]

You can't please everyone I guess. In class we go over in detail the nuances on the Start winding circuit. Obviously if it is in parallel with the Run winding, then it is limited to 104V on a 208 supply, coupled with the fact that it forms a resonant series RLC circuit with the Start Capacitor. Hard to get a reading on that specific voltage on the start winding with a digital meter prior to the centrifugal switch opening. Thanks David.