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Ty Branaman teaches the Kalos apprentices about magnetism and electricity with analogies. (Check out Ty’s YouTube channel at
You create electricity when you send a magnet through a coil of wire. Alternatively, sending electricity through a coil of wire creates a magnet. Solenoids are prime examples of electromagnets and are quite simple to create and analyze.
Motors also use electromagnetic force to function. A motor may have several electromagnets, and the current flow changes direction. We call that reversal of current “alternating current” (AC). When you measure a condensing fan motor’s amperage with the clamp on your ammeter, you don’t measure anything on the wire itself. Instead, you measure the magnetic field from the electrical current.
Motors also have varying numbers of poles. In HVAC, we often see 6 and 8-pole motors. On a motor, each pole acts as a stator that turns the rotor in the center. In general, the fewer poles you have, the faster the rotor will turn.
A good experiment to demonstrate the effect that poles have on rotation speed, as Ty shows, is to have several people work together to spin an office chair. Start with 8 people (stators) around the chair (rotor). Then, subtract 2 people after a few spins. Repeat. You will notice that the chair spins faster when you remove people. However, the number of poles on a motor impacts the resistance of a motor.
Power (watts) is a different measurement entirely. To get the watts or power measurement of an electrical component, you multiply volts by amps (V x A). As such, you will have greater power (more watts) when you have lower resistance and higher amperage.
Read all the tech tips, take the quizzes, and find our handy calculators at

Hey thanks for watching in this video, my good friend, ty branaman is back and he's giving some great analogies and just different concepts for understanding electricity and magnetism better. This is a really great opportunity for you to share this video with somebody who maybe struggles with the basic principles of electricity and magnetism. As many newer technicians and apprentices do i've put a link down in the description to ty's channel. I would strongly suggest you subscribe to ty's channel.

He has a lot of really great training and education on there. So here we go ty brandon talking about the basics of magnetism and electricity. What happens if i send a magnet through a coil of wire? Why do we end up happening? You create electricity, you create electricity. Yes, essentially we create electricity.

If i have a magnet and here's a magnet, i'm sending it through a coil of wire. So if i send a magnet through a coil of wire, we generate electricity. We can see that happening because we have the light and it's actually storing a little bit. But that's how we generate electricity and i didn't bring my other device.

But we have two magnets and we send coils of wire. Turning through that magnetic field - and we end up doing what creating electricity now, what happens, though, when i send electricity through a coil of wire, you create a magnet, create a magnet yes, so if we send electricity through the coil, we create a magnet, and if i Send a magnet through a coil of wire, i get electricity, electricity generator. Does that make sense, so this solenoid, if i send 24 volts to this solenoid, what happens magnet? Are you just that you're assuming now you're, assuming that i'm right and i'm not always right? Let's plug it in and see right, somebody want to press that button. Oh jeez, no he's kidding go ahead.

Yes, what happens? What happened? It's a magnet now release it. We have an electromagnet right. This is electrician's simplest form that right there is key, though it's so very important, our electromagnet. We know that's an electron magnet, but, let's think a little bit more about a motor.

What's really cool about a motor? Is it doesn't just have one electromagnet here we have how many different electromagnets six correct. Six, we have six different electromagnets and what's cool is let's say this? One is north and this one's south because it's altered and current going and these are in series we're going to be moving the electromagnetic field around as we go and eventually we're going to get here and they switch. So this one is north. It's now south this one's south, that's down north and we're going to keep rotating that electromagnet around now.

If i put another magnet inside or if i induce a magnetic field inside what would be happening to my rotor, would it be turning following it? Yes, yes, it would. This is how we have motors i'm making electromagnets with electricity, and then i have my rotor that i'm turning through here and i can make motors work, inversely generations that same way. Let's say i have a wind turbine or water flowing through dams and i'm using my magnet and i'm turning this lever forcing a magnet through these windings what's happening: creating electricity, good electricity, i'm generating electricity. So i can use the magnet and force electricity out or i can force electricity in and make the motor turn electricity and magnetism go hand in hand.

They are very closely connected and we talked about magnetic fields earlier here. You can see the magnetic field on a simple north and south, with alternating current we're changing directions 60 times a second. We still have this magnetic field in the side. Now we have that clamp meter.

When we have this clamp meter, it does many things i check voltage or ohms using the leads. But what do i use this part for so amperage amperage, i'm checking amperage, but does it touch a wire when i'm checking amperage? What is it touching? The magnetic field around the wire, the magnetic field around the wire? That's right! So as amperage flows faster, the magnetic field gets stronger. Has anybody been in a welding shop before fantastic? You go to a welding shop. People are grinding.

There's all this uh well essentially there's this stuff right here all over the floor. What's cool is, if you see the leads where they're welding there's lots of amperage going through there and it creates a very strong magnetic field and all of this, these shavings in the floor will be perpendicular to the wire well, this is working the same essential way As i test and there's electricity going through a wire, it's creating that magnetic field. This right here is reading that magnetic field choosing some cool math and it's giving you a number giving you the amperage. Isn't that amazing? I think that's awesome.

I can check the speed of electron flow through this wire without actually in touching that wire at all. So if i send electricity through now, how can i increase the magnetic field? You load the wire around yes loop, the wire around and guess what we do on these motors. I loop the wire around it magnifies the electromagnetic field. It makes it stronger.

That's why they do in the the transformers. It's exactly right, transformers, also the solenoid we have over. There does the same thing: here's another solenoid and what we've done is we've wrapped the wire around it around and around and around and around and we've increased that magnetic field. The same thing here with another set of wire we've increased that magnetic field and we're going to talk about transformers today too.

So here's my electromagnets here, another traumatic electromagnetic electromagnetic electromagnet, so this motor these are called poles. So here i have one two three, four five, six pole motor now what would turn faster? A six pole, motor or an eight pole motor everybody agree. Only one person's answering is if only one person answered and everybody agree with him. No, no! No, oh not! I! I like that answer, but i don't have to agree with him.

I don't like it yeah. Yes, oh now, you're changing it. No! No! I said yes, it goes faster for sure everybody agree. That's how you be.

Where is that? Let's bring that office chair out here? Let's see what's going to happen, somebody want to roll that office chat here. So we're going to test this theory out. We are all going to be involved in what it takes to make a motor work all right. Let's count the poles one, two, three, four: five: six, seven eight.

We got an eight pole motor, so we can't bypass anybody, i'm an electromagnetic field and i'm gon na move and you're in that electromagnetic field. Now you move with him, you got ta, have a full grip on it, and then you fold it to hit pull to him good, and then you good keep it try to keep it in the center. You can't bypass burt okay, so this is an eight pole. Motor the magnetic field, the next person you got ta - have full control.

You can't just pass them up, see how it slid through. Let's go a little bit: full control, good, full control, eight pole motor. So far, so good you're, the rotor we're the stator we're stationary. He's rotating so far so good sure, all right now, let's take away two people.

So let's have okay, you you're out then you're extra across from them. Everybody will spread back out now how many polls we have now one two three four: six: six good math! Don't trust me with numbers: let's try it again, all right. Is it turning faster? Oh, oh, the the rotor says it's turning faster, but i don't believe the rotor. Let's try this a little bit more back.

Let's take two people away all right. Let's all separate out now: let's try again now we got a four pole motor right, you ready, so i turn it to you all right all right. Is it turning faster yeah, so the fewer number of poles, the faster that motor's gon na turn, but i don't know, let's take away two more people just shoot me we're a two pole motor. Now, let's see how this two pole motor is going to work.

You ready is it turning faster, sir. We don't want a puker notice right so on a motor which is going to make that motor turn faster, more poles or fewer pulls fewer pulls. The fewer number of poles stays the same. The fewer number pulls the faster that it turns the more number of poles, the slower that it turns as each and every one does that make sense.

So far so good. So if you actually look inside of motors you're going to have a start winding and a run winding you're going to count one. So if you count the run winding, you can actually count the number of poles. You can do a little bit of scary, math stuff, and you actually find out how fast that motor turns, which would turn faster.

My six pole or this two pole, the two poles now there's some variances. We have some other things to determine, such as frequency also slip and voltage is going to be a factor net as well. But this is going to understand that magnetic field that magnetic field is moving around, so it doesn't change the speed of the magnetic field to have more poles in it, but it still has to go from top to bottom. Every time like just as fast it has to go to top to bottom of now this pole now this pole now this pole all the way around right, because i have fewer poles, i can go all the way around faster yeah.

Then you lose power or you have a bigger variation. Oh power, though that's a great question power's going to be dependent on something else. Does anybody know the formula for power or just give me another word for power? Let's start there. What's another word for power? What? Yes, my buddy watts right watts is another word for power.

So for power, how do we get the formula for watts times? Uh? Okay, i remember the whole thing as voltage time. Amperage, yes, volts times, amps equals watts what volts times equals what's now. This is a true form of power, so confidence volts times equals watts. So this is really going to go, have a factor in our resistance, how much resistance we have very low resistance, we're going to have faster amp flow, which means we're going to be using more watts with more power.

So the number of poles doesn't necessarily determine how strong that motor is going to be. It's also going to have to do with the resistance of that. So, let's bring this to the next thing: we're going to be talking about less resistance, faster amperage, more wattage, big thanks to tai for doing this and for everything that he brings to our trade. It's always great to collaborate with other people who care about our trade and who want to see it do better and tai is definitely one of those people again look down in the description.

We have a link to his channel and i would ask that you subscribe to his channel. Let you follow everything that he has going on thanks for watching we'll catch you on the next video thanks for watching our video. If you enjoyed it and got something out of it, if you wouldn't mind hitting the thumbs up button to like the video subscribe to the channel and click, the notifications bell to be notified when new videos come out, hvac school is far more than a youtube channel. You can find out more by going to, which is our website and hub for all of our content, including tech tips, videos, podcasts and so much more.

You can also subscribe to the podcast on any podcast app of your choosing. You can also join our facebook group if you want to weigh in on the conversation yourself thanks again for watching you.

20 thoughts on “Analogies for magnetism and electricity w/ ty branaman”
  1. Avataaar/Circle Created with python_avatars David Delgado says:

    tough crowd, great teacher

  2. Avataaar/Circle Created with python_avatars Asaad Ali says:

    thank you

  3. Avataaar/Circle Created with python_avatars Tabitha Franklin says:

    That Ty guy is way too hyper!

  4. Avataaar/Circle Created with python_avatars PotentialHVAC says:

    If my thermostat is drawing power from Furnice or Fan coil via "C" terminal can I install back up batteries in Thermostat?

  5. Avataaar/Circle Created with python_avatars Jeof Mangosong says:

    I love the interaction inside the room… lively trainer…more power to your channel from Philippines

  6. Avataaar/Circle Created with python_avatars ClickyMcbuttons says:

    Jandy was literally here.

  7. Avataaar/Circle Created with python_avatars Money Bags says:

    Crazy how the hvac Gods are coming together, I love his channel and the way he brakes downs furnaces to the T

  8. Avataaar/Circle Created with python_avatars Superhydrophobic Coating says:

    Can you explain why the solenoid coil will be burned without having the rod in?
    I watched a video before which showed without the rod sitting in the solenoid coil the current is dramatically increased. Can you explain why the the current is increased in the solenoid coil when rod is not sitting in? Thank you

  9. Avataaar/Circle Created with python_avatars Cesar Carvajal says:

    Keep it coming I love it

  10. Avataaar/Circle Created with python_avatars Brian Mcdermott says:

    High Energy,

  11. Avataaar/Circle Created with python_avatars Brian Mcdermott says:

    Great guest Bryan. Thanks. Service area Barrhaven??

  12. Avataaar/Circle Created with python_avatars bug Den says:

    wow i am retired but its always good to review anything specially as we get older ,,,,,thanks for all your teachings Are you in Nepean ?

  13. Avataaar/Circle Created with python_avatars 潘Kiet says:

    I never understood the concept till today. What a great teacher.

  14. Avataaar/Circle Created with python_avatars Sam Smith says:

    Ty is so great.! Are you in Orleans ?

  15. Avataaar/Circle Created with python_avatars 00ABBITT00 says:

    I have a level 2 final tomorrow with a hefty amount of electrical. Ty is the Mr. Wizard of our trade and a great teacher.

  16. Avataaar/Circle Created with python_avatars Wayne Costanza says:

    Electricity flows at the same speed, you increase current flow not speed.

  17. Avataaar/Circle Created with python_avatars Eassyheat/ Cooling says:


  18. Avataaar/Circle Created with python_avatars Brent & Christine says:

    I use the same induction flashlight in my lectures. Lol

  19. Avataaar/Circle Created with python_avatars Eduardo Acosta says:

    It must be very understandable. Know how different electric currents are created. Excellent theory and practice. Thank you, Engineer.

  20. Avataaar/Circle Created with python_avatars glenn hendricks says:

    l love this channel

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