Delta and Wye - Volts, Amps, & VA

Explanation of Voltage, Current, and Power Relationships in Delta and Wye Transformer Configurations.

[PeaceHi]

Thank you so much Dave. I have a degree in Electrical Engineering but never been lucky to have a professor to explain so clearly the way you are explaining this topic. I am reviewing all of your videos and relearning everything with clarity and comprehension. Thank you so much for passing your knowledge on to others to learn. Thank you again Dave !!!

[michaelcostello]

Magnificent explanation. I think a lot of teachers do not fully understand what they are talking about and the students end up being more lost after listening to them.

[bobblum]

I am glad you pointed out at the end that the value 1.73 is the square root of three. You'd shown the value earlier, but I think it's important to explain that it is used to account for the phase angle difference between current and voltage across phases. You don't need to go in-depth into trigonometry, but sine and cosine functions can help to visualize what's going on. Your phase diagram where you erased all but the two phases and added the dashed line was a good way to show the difference in potential between them.

I learned all this about 45 years ago, but watched as a refresher. Well done!

[javiercastro]

I never had the chance to have a formal education, but I was fascinated by electricity and electronics and had to figure this out on my own before there was the internet, much less YouTube videos. I picked up DC in 6th grade and AC theory by 7th grade, but could never find any well written books on 3 phase power or Delta Wye configurations. I am now entering retirement age and despite not having gotten a degree, I did manage to work on some engineering level jobs in my life by just teaching myself. Thank you.

[soundman]

Refreshing my memory here, you are one of the best explainer ever. No, flailing arms in the air or bubble head movements or tripping over your own words. Neat drawings and clear numbers and most of all you speak slow enough and clear enough to understand every word. So far, the best I have ever seen on youtube, keep up the great work!

[earledaniels]

This guy is a fantastic presenter and explains technical details so well 👍

[jacobmartin]

You explain this so much better than any place I’ve seen or anything I’ve read. Thank you

[aaronshults]

Beautiful lesson. I hope you can see this. Please never stop making videos. You are a treasure!!

[rogerdodger]

I'm sharing and commenting so this gets more views. Thank you for taking the time to pass on your knowledge.

[galeforce]

Thanks for the great videos !! I'm studying for my Canadian Ip exam after not having been in school for almost a decade, all this stuff is a distant memory and you're teachings are so clear and effective!

[toddt]

I'm 40 and have just started to dulge into this type of work. I can say... from someone with very little knowledge of electricity. You do a very good job of making it as understandable as possible. Thank you.

[TXRoeJogan]

I’ve watched this video probably 5 times, come back for a refresher every now and again

[dhimitermisha]

Very clear explanation, well done !
I suggest simpler than that, in either case delta or wye, winding voltage times winding current times number of windings .
In delta, 480x10x3=14400 or 120x40x3=14400 in wye .

[GuiltyKit]

Been an electrician for many years, and this is probably the most easily digested explanation I've ever seen.

[stringpickin]

Fantastic, clear understandable explanation. You are a great teacher, thank you!

[ceezy]

Really well explained! I was overthinking the turns ratio and the step down in voltage from my course lectures.

[lawrencecohen]

This is a wonderful, concise and easily understood video. The only thing missing is the shared pot of coffee.

[wilassguess]

Best presentation explanation I’ve come across yet. Thank you.

[josephinepedersen]

As a mechanical engineer who should have learned/remembered this from school, Thanks so much, this and your other videos have been super helpful!

[kosmokritikos]

This reminds me of technical college, but also of a job interview after graduation. In the interview I was asked where I could have learned one of the topics I was embellishing on. When I mentioned the college I had graduated from, he said, "They don't teach that there." When I asked what he thought they did teach, he replied, "You know, like how to hold a screwdriver or charge a battery for a power tool." I ended the interview there.