The reason why he can explain things this well is because he really understands what he's teaching. If you can't explain something complicated in simple terms then you really don't understand it. These are in some ways not advanced concepts but the way he explains it makes it 100 times easier to understand. Great work.
Yep had to change a three phase jockey pump to a single phase pump for a fire sprinkler system the other day, this video helped remember the structure as it had been years since I’ve had a chance to perform that kind of task. Very important to get the concept in your head so you don’t have to worry about altering the wire set up when the time comes. 👌🏻nice video
I’m a 1st year and always have trouble understanding this. I just knew three phase had 3 hot conductors and single had 2. You’re a great teacher man, seriously thank you
Pairs of wires makes a phase. 2 wires is one pair - A-B. 3 wires makes three pairs - A-B, B-C, C-A. It's not 3 times the power because you are re-using the feeds. 10A of 3 phase is worth 17A of single phase for a given voltage. Makes a big old difference when you're wiring motors and transformers and the like. You can run 3 5A draws on 10A of 3 phase. No problem if you wire it correctly.
@@okaro6595 I'm not sure why your reply applies to my posting, but while I agree that two phase is pretty much obsolete, it's still out there in pockets, and it was *usually* set up with four wires so that each pair of wires was one phase. It was 90 degrees out of phase instead of 120 degrees. I also agree that split phase is not two phase. Nobody should call it two phase. You know, I should have said "pairs of hot conductors make a phase" instead of just "pairs of wires". Is that where the confusion was?
@@mikegraham7078 not true… for a 400/230 system we have in the UK the equivalent power for 10 amps ignoring power factor 3 phase, 10 amps = 400*sqrt3*10= 6928W 1 phase 10 amps = 230*10= 2300W
@@ollieb7394 You're changing the voltage in your calculation. My point is that 3 phase of a given voltage is 1.7 times (root 3) that of single phase. So 10A of 240V three phase is the same amount of power as 17A of 240V single phase. Yes, I am rounding root 3 to 1.7 so there will be rounding error, but the statement stands as it was made. This means that if you are powering a 20HP motor with single phase (not sure why you would want to) then you would need more current, and therefore larger conductors than you would to power a 20HP motor with the same voltage of 3 phase.
molly.. singe phase gives you 220 or 440,. one way a>b.. 3 phase gives you 220 or 440 three different way a>b, b>c, c>a. i have no idea how you think this explains the difference between single phase and 3 phase
This is an incredibly difficult topic to explain to a DIYer or someone new in the electrical field, yet you cover it expertly and clearly. Thank you so much for everything you do to help us along!
@@possibility28able I have no intention of working on transformers or replacing a service panel, but learning from a professional gives me confidence to chase down a short or install a new appliance with proper wiring.
That was fantastic! It’s the first time I truly started to understand some of the principles of electricity! You did a marvelous job in presenting it simply.
more then a knack this is simplified with engineering practicality . I work around this stuff on poles and while we just get the dont touch . PPE aspect its cool to know how it works, and why. My votech and tech clases never broke it down like this...
Good video Dustin. This also happens in reverse even when we don't want it to with three phase. I work on a lot of pump Jacks for oilfield and when they are on drives and the weights are out of balance and crest over the peak and they are weight heavy they start pushing the motor and the motor starts generating voltage back into the drive. This has to either be fixed by balancing the weights properly or a dynamic breaking resistor put in place to catch the motor generated voltage and it shunts it and turns it into heat
I believe this how electric car regenerate the power and puts it back in the car battery when you take foot off the accelerate and push the brake paddle
Open up a car alternator. If you look closely at the stator setup in the alternator, you will see it is made up of three separate windings/stators. The three windings/stators produces three phase current as they are set at 120° apart from each other. What turns the three phase current from AC to DC is the diode trio the stators are connected to. Car's used to use generators. The reason alternators are used instead of generators is because alternators are more efficient, smaller and can be controlled easier than generators.
@@markchidester6239 don't forget to mention the vehicles battery supplies the capacitance to filter out the ripple out of the rectifiers. The diodes cut off the bottom half of the sine wave resulting in pulsating dc. the battery smoothes out the ripple for most dc electronics in the vehicle. Any veteran car audio tech will tell you alternator whine via ground loops has been an issue since the standardization of unbalanced signal distribution ( aka RCA unbalanced cables) Twisted Pairs in multi channel cabling helped for sure , nothing beats the balanced cable for interference
@@johnrackiewicz286 can that whine also be lowered by running the power cable on the opposite side as the audio cables? even though the wires are insulted the distortion from the giant power still bleeds through when you smash the gas. 12-2 over and out
I have a BS and MS in Electrical Engineering and took power distribution with lab back in the late 90s. I fully understand the theory behind all of this stuff but I am in awe at how well you explain all of the important parts. I love this channel, thank you for all you put out there.
@@machoman616 I went to an upper tier university in the United States. The BS was harder than the MS mainly because of the number of credit hours required. I also finished it around 20 years ago so I probably forgot a lot of the trauma.
I’m currently in the middle of my apprenticeship to become a master electrician. Do you think a master electrician can make as much as an electrical engineer?
awesome video thanks. im a engineer on a tug boat and we use 3 phase on our gens. i been to some schools for electronics but it was never explained like this. i appreciate it i have a better understanding of how it works now.
Oh, one last comment... maybe 25 years ago i was obliquely involved with the sale of a huge printing company... they moved their ginormous Heidelburg Press to a location that was cost prohibitive to bring in 3phase.... i was fascinated by the way they resolved this... and intently watched out of curiosity this entire process and could understand the electrical hook up but your video shed new light on it... causing a full understand of what they were doing... anyway they made and hooked up a single phase to 3 phase motor device that used single phase to generate onsite 3phase... your explanation in this video sparked that memory and a 25yr old Light Bulb Went OFF.... freak'n cool... the new owner of this company was a very smart guy and smart people rule... : ) you sir obviously like what you do and are a very good teacher to boot, good for you and continued much sucess... " GOAT " status for sure.... hahaha 👍
This channel is amazing as a student getting into the trade i appreciate this more than you know. There is only limited time in my class for them to go over this, and of course I can read up on it but those are usually so dry and seemingly written by people who don't know the trade or at least how do convey it, so it is hard to follow. I will always recommend this channel.
Dustin is great at explaining electrical concepts as well as practical applications. The Engineering mindset is also a very good channel for all sorts of electrical and mechanical engineering questions and he explains how everything works extremely well. Best of luck in your electrical journey! I’m studying for my Texas masters license and still watch videos to refresh concepts or learn new ways of explaining them.
Man, I love this channel.... Dustin, you are a great teacher! Any apprentice or noobie joining the electrical field, this IS the channel to subscribe to. You make electrical theory FUN to learn! Kudos my friend!
I think what confuses many new electricians is that we deliver single phase power (to residences) but most of the circuits we use are split-phase. Graphing an example of split phase is helpful. It also helps them understand crossed phases.
Thanks for the video. I have been stuck just by the names of single and three for many many years even though I fully understood the sine wave, the Y and Delta and phase angle concepts. You hit the nail on the head.
dude teaches better and waaay faster than any boring class room. say im lyin??? great content as usual. its 2am and he has me wanting to start wiring right now. my bouy has energizer bunny energy!
1st month completed as an apprentice, was told to rephase Motors and when the boss explained i was lost. This visual helped me a lot when I had my lunch break! Thank you
Great information! I am just starting out in this electrical stuff and had no clue about single and 3 phase applications. Now I do. Mission accomplished.
Ill be directing all my apprentices (and fellow journeymen 😜) to this channel Its an excellent refresher! You do an amazing job explaining everything, thank you! I wish this channel had been around during my own training
I’m an electrician in Switzerland and I have to say that if you know next to nothing in electricity this is quite clear of an explanation . So I want to say that you did a good job. But I’m used to working with a 3 phase system and think that you forgot to explain the neutral wire in the secondary system. For those who are interested, I think you should explain it in a second video (unless it’s has already been done and I’m just unaware). I think you should talk about what it is, how it’s created, it’s usage, and the fact that it isn’t obligatory for an electrical system to work but very useful for using different voltage on the same grid without a transformer. (Sorry if i didn’t use all the correct technical terms, I have to translate it from French).
I haven't read all the comments - someone else may have already clarified this but the difference between phase and polarity is in the time domain. We call household current single phase because there is only one time reference. The two legs always exactly mirror each other. 3 phase is different because at the point of generation, there are three circuits, and these are isolated - each traveling in its own conductor, and they NEVER interact until they are actually doing work in a motor or other device designed for polyphase power. Each phase in three phase power is slightly behind (or ahead of) the other two phases in terms of when their voltage peaks. The peak difference between any two phases being 208V in North America. This is why single phase gives 240V across the two legs, but 3 phase only yields 208 - the two legs are not in phase. In single phase applications, the two legs are 100% in phase - they're just opposite polarity, so the difference between them is greater.
At first I was a bit lost but it started making more sense as you went along. N you did answer one question I had which was how something uses 1 phase vs 3 phase. My second question is how a converter box takes 1 phase from the wall n makes it run 3 phase? So you can run a 3 phase motor on 1 phase. I know there's boxes that do all that for you n you just hook up the wires n go about your day but I can't help but wonder how it's able to do it
Modern phase splitting involves solid state electronics, you take the 1 phase AC, rectify (convert) to DC, then using 6 MOSFETs with a timing circuit gate the MOSFETs on and off in a way that makes stepped DC that looks like AC. This is the same method used for AC car outlets only with less MOSFETs. The old method involves using capacitors to shift the current vector, its complicated to explain without getting into vector charts. This is method has been almost entirely replaced by solid state systems. A third method would be to used a motor-generator. The motor side is a 1 phase machine, the generator side is 3 phase. This also works for DC to AC conversion without using solid state equipment. This method is also used to adjust frequency for special equipment, by changing the number of magnetic poles on the generator you change the frequency while maintaining the same speed. This method is usually found in naval applications or old equipment that required very clean DC voltage that was hard to rectify before modern solid state systems.
You rock, Dustin, your explanations are down-to-earth and understandable and gotta love your enthusiasm. You do crack me up, though, a couple times each episode-- "...keep beating that with a dead horse..." is worthy of Rev.Spooner or Mrs. Malaprop. Don't ever change.
Excellent video. You provide a great visual to what others may find difficult to understand. Most of the folks that I work with follow drawings created by an electrical design engineer. To most of these guys, it's basically color by numbers. They may not understand the theory behind what they are doing and their work is basically assigning the black wire here, the blue wire there and thew red.... you get what I mean. You illustrated the science behind it so that they can understand what these wires do and the method by which the engineer designed it.
I’m not an electrician, but an HVAC tech who tries to fully understand what runs/effects the equipment I deal with every day. This was definitely the most understandable description of 3 phase I have ever heard. The only thing I was left wondering about after the video was the reason for different voltages on the 3 legs. Thanks for such great content.
@@businjay Forgive my ignorance here as 98% of the work I do is residential, but as I remember it has to do with identifying the “wild” or “stinger” leg as some call it. Like the voltage across 2 of the wires being different than the other 2 sets.?
@@joshuahatridge3833 No worries. When I try to explain the wild leg to people they look at me like they just tasted shit!! but Dustin Explains it perfect here. phase to phase you will get a consistent voltage across all 3 of the legs but the stinger/wild leg has a neutral in there that can get you into trouble if you try to put a single pole breaker in, if its a dual pole breaker or 3 phase breaker line to line is always going to be the same, you have to know the difference between the 3 lines and a neutral(grounded conductor) in a stinger/wild leg panel there will always be one breaker out of every 3 that is 208 to ground/neutral. watch the video I linked to. Dustin explains it perfectly. Lots of guys who dont get it will put a breaker in that open spot every 3 breakers to run a light or an outlet without realizing that that particular bus bar is 208 to ground and start frying shit. had an IT guy who thought he could wire stuff at a property I worked on, kept frying stuff but come to find out he was using the stinger leg in the panel to tie things into. he never bothered to check voltages, he just hammered a breaker in and ran his cable and wondered why the magic smoke was always coming out if his equipment,
@@joshuahatridge3833 You also need to make sure you are checking phase voltages properly. 1-2, 2-3, 3-1 all those should be 208 or 240, where it starts getting interesting is when you go 1-n 2-n-3-n, will all be 120 except one of them if it is a 4 wire setup depending on which is the stinger/wild which will be 208. Definitely watch the video I linked to above. dustin explains exactly what you want to know.
Here is another thing that maybe Dustin could explain for us since I dont really care to learn the code about it but I have in a pinch run a single phase air handler off the wild leg to Neutral to power a 208/240 blower motor and such off of a single pole breaker but I label the hell out of it. I dunno if thats even legal but the equipment doesnt care!! I think this is largely why the stinger/wild legs had fallen out of favor as it was too complicated for folks to figure out.
Dude, You Da Man ! After reading all kinds of books and online tutorials , I've always found it difficult to understand the basics of electricity. Your visual illustrations make it amazingly simple, for someone like me with a thick head, to understand. Excellent visual and verbal teaching skills.
Love your channel! Everything is explained so well and for me the drawings greatly improve my understanding of what you're talking about. I'm just starting as a Pre Apprentice so all of these videos are going to help so much once I'm in the field!
Question: I already have 3 phase at my property. I need to run power to a shop. Do I pull single phase and install a box for my current needs, or pull 3 phase and install the associated panels/wiring? Pros, cons?
excellent explanation - I always look at it like this .. Single phase is generated in one set of windings and 3 phase, 3 separate windings. When the generator makes 1 revolution, you induce voltage in 3 separate windings for 3 phase and single voltage for single phase (Single Sign wave) Single phase typical home use has one hot (Black wire) ,one neutral (White wire) 3 phase has 3 hot wires typical industry call Line 1, Line 2 Line 3 or L1, L2, L3 (each phase 120 deg off set) and in the US it is color code (black, red, and blue are used for 208 VAC three-phase) and brown, orange and yellow for 480 VAC)
Just getting into the electrical field and I feel like I can skip the first year by watching your videos! Very nicely explained stuff dude. Thanks bro 👍
They looked at having 6, 9, even 12 phase transmission lines back when things were rolling out. But the inductive/capacitive losses between the phases ate up any advantages compared to the cost of running that much more wire.
Your a great teacher! I love helping others and teaching as well. I am a senior technician at DieboldNixdorf and have new guys that need training. I see it as not only an extension of your skills conveyed to another but also as a chance to instill your passion into another person 😊
Hey, that's not what a generator looks like! LOL. This is the best explanation of single phase and three phase ever. I have been sifting through many RUclips videos and I would understand to a point and then my brain would break. The way you described the rotations, how it relates to sine waves and why we want three phase, my brain actually stayed intact. This was awesome!
Hey man, been watching your videos from my day 1 as an apprentice. I am now a 2 year apprentice running jobs thanks to this knowledge. way better teaching than my journeyman who sat on his ass all day. Trying to push forward and would like to see a video on the possible amount of money you can make as a master electrician.
Excellent i am 65+ woman never understood single / 3 phase or why one would need one and not the other and what function a capacitor played I do now thank you ! Although i think i might need to listen to it a couple of times before I let my industrial electrician son hear what I have learned ;)
Good job explaining. More of these quick lessons are a definite plus to the channel ! PS, I think the capacitor at the end messes people up, haha. Maybe explaining the reactance chart(Eli and iceman) and a 30 degree shift between delta and eye connections for next video ? Much love man, you help me a lot !
Dustin I have had a lot of teachers but never one like you brother !! Thanks for always sharing your knowledge and if it counts I'm putting your knowledge to use in Mexico city so imagine that ,!!
Awesome explanation, love the in depth explanation. For all intents and purposes, the average DIY'er just needs to know that 3 phase is very good and more efficient for running larger motors, in fact motors over a certain horsepower, around 10 to 15 are only made in three phase, and with the possible exception of a very large, custom built luxury home, 3 phase is only available for commercial and industrial use. (Some utility companies and jurisdictions have a limit on single phase service sizes, I believe in parts of Wisconsin, anything larger than 600 amps must be 3 phase, or have engineer's approval)
Neat video, you forgot to mention a key benefit, as compared to single phase, by adding one more wire you can almost double the power delivery! I prefer to view 3 phase as separate windings etc that share the same spinning generator and conductors…. In a sense they both work together and separately
This was and immensely helpful explanation. The multiple visuals you add with the board help tons with my understanding. Looking forward to what your courses are like once I get into them. Giving myself till my second year start then I'm gonna hit those books. Love the content, keep it up!
Thanks again maestro Electrian U is my pleasure to stay watch your videos and i keep learning a lot from your advice and your electrical knowledge thanks maestro Electrian U stay safe and blessed and healthy
WOW, with no pun intended I had a genuine light bulb moment at 7.00min with your equal and opposite Sine wave. Showing me, a simple Fitter Welder, single phase has a 'dead spot' at 180° Explaining why a single phase powered, 3 phz generator still needs a flywheel. Thank you. Cheers Aaron
I am a total idiot with electricity and you've made it so much easier for someone like me. Bravo !👏Just 1 lesson alone, I have learned and understand a) the diff btwn single phase and 3 phase, b) what actually pushes and pulls the current in a circuit, c) the rotational direction, d) the 2D graph in combination with the 360 degree rotational cycle, d) what happens to the conductors during the rotation cycle, e) 120 degree spaced apart, f) clarifies the misconception of 3 wires on 1 circuit, and so on. It's so interesting, I was able to, kinda engrossed, follow his explanation so closely that at 16:17, I was also able to sync along with his quick realisation and promptly shifted to the 3rd rotational cycle 😄 (as he explains the decreasing effect when it gets to the 90 degree mark).
Great simple explanation, couple things I wish you would've provided for additional background: - The excitation required for the rotor (shaft) on a generator to induce voltage on the stator (outside coils) as it spins. - The role magnets play in transformers. I'd be carful telling people that electricity is transformed onto the load side across an air gap. Rather the movement of the current through the primary windings as it wraps around a magnet induces a current on the magnet, which through the ratio of the coils on the low side wrapped around the same magnet in comparison to the high side creates the inverse of voltage/current output on the secondary windings. Not trying to puff my chest or anything like that. Just a bit of a nerd for electricity.
Hey Mr ElectricianU , can you make videos on how to troubleshoot VFDs fuses &pumps ,motors etc..??? I just got a maintenance mechanic job & it's all we dealing with !! Thnks
Troubleshooting VFD'S not that difficult. First make sure you have three phase power ( more then once had the odd ball 600 volt line fuse blew ( the one that does feed the control drive transformer ) and occured while drive was lightly loaded. Could not reach higher speeds because the normal DC Buss voltage was only around 420 bolts instead of the usually 650 to 675 volts DC. If the touch panel is blank remove the 24 volt control wires that go outside if drive. If touch screen is on them you have a short on external wires. There is a process to check the IGBT'S using an ohmmeter. There are several great vids on utube telling you how to troubleshoot drives. I was lucky to attend 2 drive schools but learned just as much by picking the drive tech brains when he came to perform start ups. His company only charged $150 to $200 to perform a start up on a new drive purchased thru the company he worked for. This extended the free parts & labor warranty to three years. Danfoss & Allen Bradley had great tech support while ABB was always like pulling teeth. Always asked why do I want to know this or that. We had drives from 3 to 1, 750 HP . In a new building all drives over 40 HP were 18 pulse which has extra parts to cause problems. When working with drives have to watch large capacitor bank that can take up to 20 minutes to self discharge. The 3 phase 480 volts that makes the 650 to 675 volts DC Buss is in parallel with the capacitor bank. Got shocked several times 10 minutes after kicking out the 480 volts. Was told that most drive capacitors have a 75,000 hour life span but had dozens of old drives that had well over a 100,000 hours. Had a few 15 year old Danfoss obsolete drives that parameters would change on there own. All were in a mechanical room with very limited card access so doubt anybody played with settings. That took awhile to troubleshoot to find problem. Old timer told me many years ago after your head is spinning and getting nowhere troubleshooting walk away and drink a coffee or a soda, wait a few minutes then go back. So many times boom found the problem within a few minutes after taking a break Good luck. Work safe & keep your PPE in good shape.
That actually made sense, you're a good teacher, I have ADD and a lot of the time I have to watch something like umpteen times before it makes sense. However I have always wondered how do you tell if your house is three phase or single phase ?
Why don't we use three-phase to run HVAC units in our homes? It would be much more efficient, yes? By the way, I've been a professor at the doctorate level for 40 years and you, sir, are a PHENOMENAL teacher. You have a knack for breaking down complex subjects into manageable parts. Keep up the good work. I'm learning a lot!
Residential applications typically are supplied with single phase power. Single phase power is less expensive to purchase, and three phase is more appropriate for higher loads than what is used in residential applications.
Hey Dustin, How are u? It is interesting to get oneself understand concepts with u as teacher, thanks Is it like this in single phase? Please confirm When the North Pole connects to the top wire and the south pole connects to the bottom wires the current moves counter clockwise And When the south Pole connects to the top wire and the north pole connects to the bottom wires the current moves clockwise. South Pole is negative North Pole is positive And Electricity moves from negative pole And Electricity moves toward positive pole.
Great explanation, from start to finish. I understand everything you said. Can you point me to a video you have made explaining 208, or make one? I know it’s using 2 legs from the power company but I feel like you would do a a way better job of explaining it than I have ever heard anyone attempt to explain 208v.
many thanks. i became an electrician last year without going to school ( may will be one year ). lucky enough to be taught green. i have a lot more technical questions that my boss is not very good at explaining ( his hands move a week ahead of his brain ). so thank you for teaching it very well.
First great video, now to really irrelevant comments. This Has to be the first time I’ve ever heard top dead center used when trying to explain electrical field theory. I laughed out loud. It was great. Secondly you are having way too much damn fun with that whiteboard. Again great video
Most of the time delta configuration is used in HV/EHV and MV system (which is transmission level) then goes down to wye configuration at distribution level. The reason for this is you go as high voltage as you can to transmit power with the lowest possible current to minimize losses and it is cheaper (lower current means smaller conductor size hence cheaper on material cost).
Thanks for the explanation. I have a dummy question. For my shop, I plan to buy a 3PH rotary phase converter. Then, is there anything special I need to know regarding the wiring and the outlets?
This video is awesome! I never understood how 3 phase worked, until know! Just think of it like a two cylinder engine vs. a 6 cylinder engine. Single phase being the 2 cylinder and 3 phase being the 6 cylinder engine.(just my perspective) Thank you!👍🙂
Seriously…excellent instruction. I’m a trained aircraft electrician…but I’m now an electric sign contractor. 120/240 vac is easy for me, but gets a bit fuzzy when working into three phase, 277 service, etc. the ONLY thing I would add/modify to this instruction is that a three-phase system almost necessarily HAS to come from the same generator. Inside the generator, the three sets of windings are completely separated and the induction “pickups” are set 120 degrees apart. If you used three separate generators, trying to sync the phases from three different generators to be 120 out from each other, nearly impossible…
Great! Thank you. This was a mystery to me for a long time. Now that I need three-phase power for my woodworking and CNC machines, this comes in handy. Not sure if you have a video about a rotary converter, such as American Rotary products or others, that would be awesome. Thanks again.
Hello I am a follower of your lessons and a big fan of them. I hope that you will show videos explaining the method of calculating the power factor, as well as the correct way to calculate the main breaker, and whether it should be larger than the service provider’s breaker, equal to it, or less in size than it. sincerely Khalid
Sinewave: although your magnet explanation is right I would have a comment. The sinewave is not only a graphical presentation of the voltage and/or amperage but this sinewave actually present in the wire (conductor). Start with the zero-crossing (it means there is no voltage nor amperage present in the wire - at all. Then the voltage start to grow until it peaks at 120V then it drops back to 0 and it starts over the same thing just the opposite direction. Imagen a battery connected to two wires you have + and - but 60 times in one second, you flip the battery between the wires. That would be a square-wave. just because the voltage increases and decreases between flipping you get the sine-wave. Love your presentation.
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The clarity by which something is defined will determine the effectiveness of its application. Nice work!
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@@kurt10k74 that's funny af.
Place a magnet in between and you can run a small country for week. 😅
I am a field electrician and I was unable to go to school,I'm so appreciative of all the content you put forth .thank you so much
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@@WestHaddnin why? Not hating just curious to the pros and benefits
@@WestHaddnin isn't it expensive? You only need hours for JMANS.
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@@WestHaddnin no abc the biggest rat outfit in the nation...
The reason why he can explain things this well is because he really understands what he's teaching. If you can't explain something complicated in simple terms then you really don't understand it. These are in some ways not advanced concepts but the way he explains it makes it 100 times easier to understand. Great work.
Agree, not advanced concepts, but could you imagine Michael Faraday watching this video?
Yep had to change a three phase jockey pump to a single phase pump for a fire sprinkler system the other day, this video helped remember the structure as it had been years since I’ve had a chance to perform that kind of task. Very important to get the concept in your head so you don’t have to worry about altering the wire set up when the time comes. 👌🏻nice video
I’m a 1st year and always have trouble understanding this. I just knew three phase had 3 hot conductors and single had 2. You’re a great teacher man, seriously thank you
Pairs of wires makes a phase. 2 wires is one pair - A-B. 3 wires makes three pairs - A-B, B-C, C-A. It's not 3 times the power because you are re-using the feeds. 10A of 3 phase is worth 17A of single phase for a given voltage. Makes a big old difference when you're wiring motors and transformers and the like. You can run 3 5A draws on 10A of 3 phase. No problem if you wire it correctly.
Two phase is an obsolete system used in motors so they cannot call the split phase two phase.
@@okaro6595 I'm not sure why your reply applies to my posting, but while I agree that two phase is pretty much obsolete, it's still out there in pockets, and it was *usually* set up with four wires so that each pair of wires was one phase. It was 90 degrees out of phase instead of 120 degrees.
I also agree that split phase is not two phase. Nobody should call it two phase.
You know, I should have said "pairs of hot conductors make a phase" instead of just "pairs of wires". Is that where the confusion was?
@@mikegraham7078 not true… for a 400/230 system we have in the UK the equivalent power for 10 amps ignoring power factor
3 phase, 10 amps = 400*sqrt3*10= 6928W
1 phase 10 amps = 230*10= 2300W
@@ollieb7394 You're changing the voltage in your calculation. My point is that 3 phase of a given voltage is 1.7 times (root 3) that of single phase. So 10A of 240V three phase is the same amount of power as 17A of 240V single phase. Yes, I am rounding root 3 to 1.7 so there will be rounding error, but the statement stands as it was made.
This means that if you are powering a 20HP motor with single phase (not sure why you would want to) then you would need more current, and therefore larger conductors than you would to power a 20HP motor with the same voltage of 3 phase.
I just completed a four year degree in Electrical engineering, but it is this 23mins video that has given me the understanding... 👍💯
Excellent simplified explanation, including capacitors at the end. Thanks Dustin!
Very well done, Dustin. I am a Professional Engineer in Electrical Engineering and you explained a tough concept/topic very well, indeed! Thank you!
molly.. singe phase gives you 220 or 440,. one way a>b.. 3 phase gives you 220 or 440 three different way a>b, b>c, c>a.
i have no idea how you think this explains the difference between single phase and 3 phase
@@jjohnsice What does the video leave out or get wrong?
This is an incredibly difficult topic to explain to a DIYer or someone new in the electrical field, yet you cover it expertly and clearly. Thank you so much for everything you do to help us along!
Yeah... Don't try to diy if you're not an electrician
@@possibility28able I have no intention of working on transformers or replacing a service panel, but learning from a professional gives me confidence to chase down a short or install a new appliance with proper wiring.
Yea, it's not expertly or clearly. Most of it is wrong.
@@traditionaltools5080 site your sources.
@@alexdasilva3935 basic electric theory. See my previous post.
I stand amazed. I actually believed I’d never be able to grasp this whole thing, but now I get it. What an excellent presentation. Thank you.
That was fantastic! It’s the first time I truly started to understand some of the principles of electricity! You did a marvelous job in presenting it simply.
Pretty obtuse subject for the average person, very well explained. You have a knack for teaching. Kudos!
maybe I'm just going thru a phase but after this video I'm acute person 😂
more then a knack this is simplified with engineering practicality . I work around this stuff on poles and while we just get the dont touch . PPE aspect its cool to know how it works, and why. My votech and tech clases never broke it down like this...
Good video Dustin. This also happens in reverse even when we don't want it to with three phase. I work on a lot of pump Jacks for oilfield and when they are on drives and the weights are out of balance and crest over the peak and they are weight heavy they start pushing the motor and the motor starts generating voltage back into the drive. This has to either be fixed by balancing the weights properly or a dynamic breaking resistor put in place to catch the motor generated voltage and it shunts it and turns it into heat
Same way engines can be bump started i guess? Wheels turning, drop the clutch, turns the motor?
I believe this how electric car regenerate the power and puts it back in the car battery when you take foot off the accelerate and push the brake paddle
@@maxnovakovics2568turns the motor, turns the serpentine belt, turns the alternator, creates power to light the sparkbplug
@chimera91977 yeah okay, I oversimplified it kinda.
Is this called a reverse feedback loop or something?
Open up a car alternator. If you look closely at the stator setup in the alternator, you will see it is made up of three separate windings/stators. The three windings/stators produces three phase current as they are set at 120° apart from each other. What turns the three phase current from AC to DC is the diode trio the stators are connected to. Car's used to use generators. The reason alternators are used instead of generators is because alternators are more efficient, smaller and can be controlled easier than generators.
Those old automotive generators were larger than a big starter
@@markchidester6239 don't forget to mention the vehicles battery supplies the capacitance to filter out the ripple out of the rectifiers. The diodes cut off the bottom half of the sine wave resulting in pulsating dc. the battery smoothes out the ripple for most dc electronics in the vehicle. Any veteran car audio tech will tell you alternator whine via ground loops has been an issue since the standardization of unbalanced signal distribution ( aka RCA unbalanced cables) Twisted Pairs in multi channel cabling helped for sure , nothing beats the balanced cable for interference
and noise regection
@@johnrackiewicz286 can that whine also be lowered by running the power cable on the opposite side as the audio cables? even though the wires are insulted the distortion from the giant power still bleeds through when you smash the gas. 12-2 over and out
I have a BS and MS in Electrical Engineering and took power distribution with lab back in the late 90s. I fully understand the theory behind all of this stuff but I am in awe at how well you explain all of the important parts. I love this channel, thank you for all you put out there.
What school did you go to? Was getting your BAS very hard?
@@machoman616 I went to an upper tier university in the United States. The BS was harder than the MS mainly because of the number of credit hours required. I also finished it around 20 years ago so I probably forgot a lot of the trauma.
I’m currently in the middle of my apprenticeship to become a master electrician. Do you think a master electrician can make as much as an electrical engineer?
@@machoman616 probably more.
Thanks!
awesome video thanks. im a engineer on a tug boat and we use 3 phase on our gens. i been to some schools for electronics but it was never explained like this. i appreciate it i have a better understanding of how it works now.
Oh, one last comment... maybe 25 years ago i was obliquely involved with the sale of a huge printing company... they moved their ginormous Heidelburg Press to a location that was cost prohibitive to bring in 3phase.... i was fascinated by the way they resolved this... and intently watched out of curiosity this entire process and could understand the electrical hook up but your video shed new light on it... causing a full understand of what they were doing... anyway they made and hooked up a single phase to 3 phase motor device that used single phase to generate onsite 3phase... your explanation in this video sparked that memory and a 25yr old Light Bulb Went OFF.... freak'n cool... the new owner of this company was a very smart guy and smart people rule... : ) you sir obviously like what you do and are a very good teacher to boot, good for you and continued much sucess... " GOAT " status for sure.... hahaha 👍
Best explanation i ve ever heard for this. I'm 60 years old and have been trying to understand this my entire life. great job
This channel is amazing as a student getting into the trade i appreciate this more than you know. There is only limited time in my class for them to go over this, and of course I can read up on it but those are usually so dry and seemingly written by people who don't know the trade or at least how do convey it, so it is hard to follow. I will always recommend this channel.
Dustin is great at explaining electrical concepts as well as practical applications. The Engineering mindset is also a very good channel for all sorts of electrical and mechanical engineering questions and he explains how everything works extremely well. Best of luck in your electrical journey! I’m studying for my Texas masters license and still watch videos to refresh concepts or learn new ways of explaining them.
Hands down the best explanation of 3ph vs 1ph I've ever heard. amazing job ,,, Thx !!!
I'm approaching 60 and I never understood this as I now do. Your breakdown was the key--simple but detailed at the same time. Cheers.
Could you imagine if Dustin had to keep his hands in one spot for one video? He would probably internally combust lol
@@garrysekelli6776 just found a lost dog
🐶🐶
No the hands are everything this is how i talk and how i’m learning
You need to spec and over current protective device to avoid that 😂 😉
As an Italian, I don’t know how someone can talk without moving their hands! 😉
I’m impressed! I wasn’t sure I’d be able to follow along searching for answers I was looking for, with out being bored, overwhelmed, or impatient.
Bro you are the goat of simplification and compressing a lesson. Also your drawing is amazing and better than most teachers.
Thank you DUSTIN. I’ve been struggling to understand this but you’ve made it much more clear.
Thanks!
Man, I love this channel.... Dustin, you are a great teacher! Any apprentice or noobie joining the electrical field, this IS the channel to subscribe to. You make electrical theory FUN to learn! Kudos my friend!
Your teaching is great!
I'm so glad I found this channel. I've learned so much from you.
Thank you
I think what confuses many new electricians is that we deliver single phase power (to residences) but most of the circuits we use are split-phase. Graphing an example of split phase is helpful. It also helps them understand crossed phases.
Aaron. Well written
Can you elaborate
How are the circuits split phase
@@dannydropsda8616because there are 2 x phase conductors.
What constitutes a phase? As soon as you grasp that you’ll understand it’s 2 phase power no matter how many electricians don’t understand it.
Excellent explanation of 3 phase vs. Single phase. I’ve watched 7 other videos and couldn’t understand it well enough until I watched this one.
Thanks for the video. I have been stuck just by the names of single and three for many many years even though I fully understood the sine wave, the Y and Delta and phase angle concepts. You hit the nail on the head.
dude teaches better and waaay faster than any boring class room. say im lyin??? great content as usual. its 2am and he has me wanting to start wiring right now. my bouy has energizer bunny energy!
1st month completed as an apprentice, was told to rephase Motors and when the boss explained i was lost. This visual helped me a lot when I had my lunch break! Thank you
Great information! I am just starting out in this electrical stuff and had no clue about single and 3 phase applications. Now I do. Mission accomplished.
Ill be directing all my apprentices (and fellow journeymen 😜) to this channel
Its an excellent refresher! You do an amazing job explaining everything, thank you!
I wish this channel had been around during my own training
I’m an electrician in Switzerland and I have to say that if you know next to nothing in electricity this is quite clear of an explanation . So I want to say that you did a good job. But I’m used to working with a 3 phase system and think that you forgot to explain the neutral wire in the secondary system. For those who are interested, I think you should explain it in a second video (unless it’s has already been done and I’m just unaware). I think you should talk about what it is, how it’s created, it’s usage, and the fact that it isn’t obligatory for an electrical system to work but very useful for using different voltage on the same grid without a transformer. (Sorry if i didn’t use all the correct technical terms, I have to translate it from French).
I haven't read all the comments - someone else may have already clarified this but the difference between phase and polarity is in the time domain. We call household current single phase because there is only one time reference. The two legs always exactly mirror each other. 3 phase is different because at the point of generation, there are three circuits, and these are isolated - each traveling in its own conductor, and they NEVER interact until they are actually doing work in a motor or other device designed for polyphase power. Each phase in three phase power is slightly behind (or ahead of) the other two phases in terms of when their voltage peaks. The peak difference between any two phases being 208V in North America. This is why single phase gives 240V across the two legs, but 3 phase only yields 208 - the two legs are not in phase. In single phase applications, the two legs are 100% in phase - they're just opposite polarity, so the difference between them is greater.
Easily the best description of a 3 phase motor I've heard!
This is the single best explanation of this science that I've ever seen. Great job - earned a subscriber...
At first I was a bit lost but it started making more sense as you went along. N you did answer one question I had which was how something uses 1 phase vs 3 phase. My second question is how a converter box takes 1 phase from the wall n makes it run 3 phase? So you can run a 3 phase motor on 1 phase. I know there's boxes that do all that for you n you just hook up the wires n go about your day but I can't help but wonder how it's able to do it
Modern phase splitting involves solid state electronics, you take the 1 phase AC, rectify (convert) to DC, then using 6 MOSFETs with a timing circuit gate the MOSFETs on and off in a way that makes stepped DC that looks like AC. This is the same method used for AC car outlets only with less MOSFETs.
The old method involves using capacitors to shift the current vector, its complicated to explain without getting into vector charts. This is method has been almost entirely replaced by solid state systems.
A third method would be to used a motor-generator. The motor side is a 1 phase machine, the generator side is 3 phase. This also works for DC to AC conversion without using solid state equipment. This method is also used to adjust frequency for special equipment, by changing the number of magnetic poles on the generator you change the frequency while maintaining the same speed. This method is usually found in naval applications or old equipment that required very clean DC voltage that was hard to rectify before modern solid state systems.
@@iGameriOS ELI the ICE man
You rock, Dustin, your explanations are down-to-earth and understandable and gotta love your enthusiasm. You do crack me up, though, a couple times each episode-- "...keep beating that with a dead horse..." is worthy of Rev.Spooner or Mrs. Malaprop. Don't ever change.
Excellent video. You provide a great visual to what others may find difficult to understand. Most of the folks that I work with follow drawings created by an electrical design engineer. To most of these guys, it's basically color by numbers. They may not understand the theory behind what they are doing and their work is basically assigning the black wire here, the blue wire there and thew red.... you get what I mean. You illustrated the science behind it so that they can understand what these wires do and the method by which the engineer designed it.
Finally someone who can explain it succinctly and correctly. Now I understand!
I’m not an electrician, but an HVAC tech who tries to fully understand what runs/effects the equipment I deal with every day. This was definitely the most understandable description of 3 phase I have ever heard. The only thing I was left wondering about after the video was the reason for different voltages on the 3 legs. Thanks for such great content.
are you talking about the wild Leg in older buildings or the fact that 2X277 does not equal 480?
@@businjay Forgive my ignorance here as 98% of the work I do is residential, but as I remember it has to do with identifying the “wild” or “stinger” leg as some call it. Like the voltage across 2 of the wires being different than the other 2 sets.?
@@joshuahatridge3833 No worries. When I try to explain the wild leg to people they look at me like they just tasted shit!! but Dustin Explains it perfect here. phase to phase you will get a consistent voltage across all 3 of the legs but the stinger/wild leg has a neutral in there that can get you into trouble if you try to put a single pole breaker in, if its a dual pole breaker or 3 phase breaker line to line is always going to be the same, you have to know the difference between the 3 lines and a neutral(grounded conductor) in a stinger/wild leg panel there will always be one breaker out of every 3 that is 208 to ground/neutral. watch the video I linked to. Dustin explains it perfectly. Lots of guys who dont get it will put a breaker in that open spot every 3 breakers to run a light or an outlet without realizing that that particular bus bar is 208 to ground and start frying shit. had an IT guy who thought he could wire stuff at a property I worked on, kept frying stuff but come to find out he was using the stinger leg in the panel to tie things into. he never bothered to check voltages, he just hammered a breaker in and ran his cable and wondered why the magic smoke was always coming out if his equipment,
@@joshuahatridge3833 You also need to make sure you are checking phase voltages properly. 1-2, 2-3, 3-1 all those should be 208 or 240, where it starts getting interesting is when you go 1-n 2-n-3-n, will all be 120 except one of them if it is a 4 wire setup depending on which is the stinger/wild which will be 208. Definitely watch the video I linked to above. dustin explains exactly what you want to know.
Here is another thing that maybe Dustin could explain for us since I dont really care to learn the code about it but I have in a pinch run a single phase air handler off the wild leg to Neutral to power a 208/240 blower motor and such off of a single pole breaker but I label the hell out of it. I dunno if thats even legal but the equipment doesnt care!! I think this is largely why the stinger/wild legs had fallen out of favor as it was too complicated for folks to figure out.
This is the best video I have ever seen. Super understandable for a visual learner like me.
wow I've seen lost of videos and this one cleared a lot of questions that no one else answered. great video. thumbs up.
Dude, You Da Man !
After reading all kinds of books and online tutorials , I've always found it difficult to understand the basics of electricity.
Your visual illustrations make it amazingly simple, for someone like me with a thick head, to understand.
Excellent visual and verbal teaching skills.
Love your channel! Everything is explained so well and for me the drawings greatly improve my understanding of what you're talking about. I'm just starting as a Pre Apprentice so all of these videos are going to help so much once I'm in the field!
Question: I already have 3 phase at my property. I need to run power to a shop. Do I pull single phase and install a box for my current needs, or pull 3 phase and install the associated panels/wiring? Pros, cons?
excellent explanation - I always look at it like this .. Single phase is generated in one set of windings and 3 phase, 3 separate windings.
When the generator makes 1 revolution, you induce voltage in 3 separate windings for 3 phase and single voltage for single phase (Single Sign wave) Single phase typical home use has one hot (Black wire) ,one neutral (White wire) 3 phase has 3 hot wires typical industry call Line 1, Line 2 Line 3 or L1, L2, L3 (each phase 120 deg off set) and in the US it is color code (black, red, and blue are used for 208 VAC three-phase) and brown, orange and yellow for 480 VAC)
Just getting into the electrical field and I feel like I can skip the first year by watching your videos! Very nicely explained stuff dude. Thanks bro 👍
They looked at having 6, 9, even 12 phase transmission lines back when things were rolling out. But the inductive/capacitive losses between the phases ate up any advantages compared to the cost of running that much more wire.
6 was actually pretty efficient.. After that you got diminishing returns and cost effectiveness went down
Your a great teacher! I love helping others and teaching as well. I am a senior technician at DieboldNixdorf and have new guys that need training. I see it as not only an extension of your skills conveyed to another but also as a chance to instill your passion into another person 😊
Hey, that's not what a generator looks like! LOL. This is the best explanation of single phase and three phase ever. I have been sifting through many RUclips videos and I would understand to a point and then my brain would break. The way you described the rotations, how it relates to sine waves and why we want three phase, my brain actually stayed intact. This was awesome!
Hey man, been watching your videos from my day 1 as an apprentice. I am now a 2 year apprentice running jobs thanks to this knowledge. way better teaching than my journeyman who sat on his ass all day. Trying to push forward and would like to see a video on the possible amount of money you can make as a master electrician.
I like how you make this stuff easy to comprehend.
If your HVAC motor refuses to start, the first place to look is the capacitor. Very common failure point and required for the reason explained here.
Excellent i am 65+ woman never understood single / 3 phase or why one would need one and not the other and what function a capacitor played I do now thank you ! Although i think i might need to listen to it a couple of times before I let my industrial electrician son hear what I have learned ;)
Good job explaining. More of these quick lessons are a definite plus to the channel !
PS, I think the capacitor at the end messes people up, haha.
Maybe explaining the reactance chart(Eli and iceman) and a 30 degree shift between delta and eye connections for next video ?
Much love man, you help me a lot !
Dustin I have had a lot of teachers but never one like you brother !! Thanks for always sharing your knowledge and if it counts I'm putting your knowledge to use in Mexico city so imagine that ,!!
Much better explanation than my trainer at work gave me, thanks!
Awesome explanation, love the in depth explanation. For all intents and purposes, the average DIY'er just needs to know that 3 phase is very good and more efficient for running larger motors, in fact motors over a certain horsepower, around 10 to 15 are only made in three phase, and with the possible exception of a very large, custom built luxury home, 3 phase is only available for commercial and industrial use. (Some utility companies and jurisdictions have a limit on single phase service sizes, I believe in parts of Wisconsin, anything larger than 600 amps must be 3 phase, or have engineer's approval)
Neat video, you forgot to mention a key benefit, as compared to single phase,
by adding one more wire you can almost double the power delivery!
I prefer to view 3 phase as separate windings etc that share the same spinning generator and conductors…. In a sense they both work together and separately
This was and immensely helpful explanation. The multiple visuals you add with the board help tons with my understanding. Looking forward to what your courses are like once I get into them. Giving myself till my second year start then I'm gonna hit those books. Love the content, keep it up!
Thanks again maestro Electrian U is my pleasure to stay watch your videos and i keep learning a lot from your advice and your electrical knowledge thanks maestro Electrian U stay safe and blessed and healthy
Seriously, your content is great for anyone in the trade. Apprentace to master electrician. Thanks
WOW, with no pun intended I had a genuine light bulb moment at 7.00min with your equal and opposite Sine wave.
Showing me, a simple Fitter Welder, single phase has a 'dead spot' at 180°
Explaining why a single phase powered, 3 phz generator still needs a flywheel.
Thank you.
Cheers Aaron
I am a total idiot with electricity and you've made it so much easier for someone like me.
Bravo !👏Just 1 lesson alone, I have learned and understand a) the diff btwn single phase and 3 phase, b) what actually pushes and pulls the current in a circuit, c) the rotational direction, d) the 2D graph in combination with the 360 degree rotational cycle, d) what happens to the conductors during the rotation cycle, e) 120 degree spaced apart, f) clarifies the misconception of 3 wires on 1 circuit, and so on.
It's so interesting, I was able to, kinda engrossed, follow his explanation so closely that at 16:17, I was also able to sync along with his quick realisation and promptly shifted to the 3rd rotational cycle 😄 (as he explains the decreasing effect when it gets to the 90 degree mark).
Great simple explanation. Got the answer I was looking for 7 minutes in.
You are so much better than my lecturers. Good work man.
I'm just getting off on Dustin's LED computer screen. I'd love to know how it's done. First-class demo by a first-class teacher. Great job.
Good job explaining this, you make it easier to understand
Best explanation I’ve seen. You make this subject so easy to learn. Great job
Great simple explanation, couple things I wish you would've provided for additional background:
- The excitation required for the rotor (shaft) on a generator to induce voltage on the stator (outside coils) as it spins.
- The role magnets play in transformers. I'd be carful telling people that electricity is transformed onto the load side across an air gap. Rather the movement of the current through the primary windings as it wraps around a magnet induces a current on the magnet, which through the ratio of the coils on the low side wrapped around the same magnet in comparison to the high side creates the inverse of voltage/current output on the secondary windings.
Not trying to puff my chest or anything like that. Just a bit of a nerd for electricity.
with your explaination it is much clear than the other. Thank you very much.
Hey Mr ElectricianU , can you make videos on how to troubleshoot VFDs fuses &pumps ,motors etc..??? I just got a maintenance mechanic job & it's all we dealing with !! Thnks
Troubleshooting VFD'S not that difficult. First make sure you have three phase power ( more then once had the odd ball 600 volt line fuse blew ( the one that does feed the control drive transformer ) and occured while drive was lightly loaded. Could not reach higher speeds because the normal DC Buss voltage was only around 420 bolts instead of the usually 650 to 675 volts DC. If the touch panel is blank remove the 24 volt control wires that go outside if drive. If touch screen is on them you have a short on external wires. There is a process to check the IGBT'S using an ohmmeter. There are several great vids on utube telling you how to troubleshoot drives. I was lucky to attend 2 drive schools but learned just as much by picking the drive tech brains when he came to perform start ups. His company only charged $150 to $200 to perform a start up on a new drive purchased thru the company he worked for. This extended the free parts & labor warranty to three years. Danfoss & Allen Bradley had great tech support while ABB was always like pulling teeth. Always asked why do I want to know this or that. We had drives from 3 to 1, 750 HP . In a new building all drives over 40 HP were 18 pulse which has extra parts to cause problems. When working with drives have to watch large capacitor bank that can take up to 20 minutes to self discharge. The 3 phase 480 volts that makes the 650 to 675 volts DC Buss is in parallel with the capacitor bank. Got shocked several times 10 minutes after kicking out the 480 volts. Was told that most drive capacitors have a 75,000 hour life span but had dozens of old drives that had well over a 100,000 hours. Had a few 15 year old Danfoss obsolete drives that parameters would change on there own. All were in a mechanical room with very limited card access so doubt anybody played with settings. That took awhile to troubleshoot to find problem. Old timer told me many years ago after your head is spinning and getting nowhere troubleshooting walk away and drink a coffee or a soda, wait a few minutes then go back. So many times boom found the problem within a few minutes after taking a break Good luck. Work safe & keep your PPE in good shape.
@@JohnThomas-lq5qp nice!!! Thanks
I like it! And you explained it just right! Better than my generator class when I was in the Army! 52D baby
That actually made sense, you're a good teacher, I have ADD and a lot of the time I have to watch something like umpteen times before it makes sense. However I have always wondered how do you tell if your house is three phase or single phase ?
Why don't we use three-phase to run HVAC units in our homes? It would be much more efficient, yes? By the way, I've been a professor at the doctorate level for 40 years and you, sir, are a PHENOMENAL teacher. You have a knack for breaking down complex subjects into manageable parts. Keep up the good work. I'm learning a lot!
Residential applications typically are supplied with single phase power. Single phase power is less expensive to purchase, and three phase is more appropriate for higher loads than what is used in residential applications.
I'm so glad you explain things so nicely, I finally get it!
Hey Dustin, How are u? It is interesting to get oneself understand concepts with u as teacher, thanks
Is it like this in single phase?
Please confirm
When the North Pole connects to the top wire and the south pole connects to the bottom wires the current moves counter clockwise
And
When the south Pole connects to the top wire and the north pole connects to the bottom wires the current moves clockwise.
South Pole is negative
North Pole is positive
And
Electricity moves from negative pole
And
Electricity moves toward positive pole.
Great explanation, from start to finish. I understand everything you said. Can you point me to a video you have made explaining 208, or make one? I know it’s using 2 legs from the power company but I feel like you would do a a way better job of explaining it than I have ever heard anyone attempt to explain 208v.
hey man youre a good teacher - props… just wanted to let u know
many thanks. i became an electrician last year without going to school ( may will be one year ). lucky enough to be taught green. i have a lot more technical questions that my boss is not very good at explaining ( his hands move a week ahead of his brain ). so thank you for teaching it very well.
First great video, now to really irrelevant comments. This Has to be the first time I’ve ever heard top dead center used when trying to explain electrical field theory. I laughed out loud. It was great. Secondly you are having way too much damn fun with that whiteboard. Again great video
Very well explained. Thank you! Wondering if 3 phase always uses a delta / wye configuration; or can it be a delta / delta ; or wye / wye? And, why?
Depends on the application and how much money you have.
Most of the time delta configuration is used in HV/EHV and MV system (which is transmission level) then goes down to wye configuration at distribution level. The reason for this is you go as high voltage as you can to transmit power with the lowest possible current to minimize losses and it is cheaper (lower current means smaller conductor size hence cheaper on material cost).
@@marlonespino9111 thank you
Thanks for the explanation. I have a dummy question.
For my shop, I plan to buy a 3PH rotary phase converter.
Then, is there anything special I need to know regarding the wiring and the outlets?
Wow so well explained. I got lost on plant electrics at college when we jumped to 3 phase!
This video made this concept finally click for me - thank you!!!!
Got to had it to you, you explained that better than any teacher I have had.
My new house is 3 phase. It really is a mind blower when you are use to Split-phase electric.
This video is awesome! I never understood how 3 phase worked, until know!
Just think of it like a two cylinder engine vs. a 6 cylinder engine. Single phase being the 2 cylinder and 3 phase being the 6 cylinder engine.(just my perspective)
Thank you!👍🙂
Seriously…excellent instruction. I’m a trained aircraft electrician…but I’m now an electric sign contractor. 120/240 vac is easy for me, but gets a bit fuzzy when working into three phase, 277 service, etc. the ONLY thing I would add/modify to this instruction is that a three-phase system almost necessarily HAS to come from the same generator. Inside the generator, the three sets of windings are completely separated and the induction “pickups” are set 120 degrees apart. If you used three separate generators, trying to sync the phases from three different generators to be 120 out from each other, nearly impossible…
Also, 60hz is why all generators making power for 60 hz systems must rotate at 3600 RPM. 3600 RPM push/pulls 60x/second
Good explanation , I appreciate your videos man , always been a go to since day 1
Great! Thank you. This was a mystery to me for a long time. Now that I need three-phase power for my woodworking and CNC machines, this comes in handy. Not sure if you have a video about a rotary converter, such as American Rotary products or others, that would be awesome. Thanks again.
I like you videos, you are truly a good teacher, you explain things very well; easy to understand.
Holy shit, the way this man explained it was perfect. It's like someone shined the light on the 3 phases
Hello
I am a follower of your lessons and a big fan of them. I hope that you will show videos explaining the method of calculating the power factor, as well as the correct way to calculate the main breaker, and whether it should be larger than the service provider’s breaker, equal to it, or less in size than it.
sincerely
Khalid
Sinewave: although your magnet explanation is right I would have a comment. The sinewave is not only a graphical presentation of the voltage and/or amperage but this sinewave actually present in the wire (conductor). Start with the zero-crossing (it means there is no voltage nor amperage present in the wire - at all. Then the voltage start to grow until it peaks at 120V then it drops back to 0 and it starts over the same thing just the opposite direction. Imagen a battery connected to two wires you have + and - but 60 times in one second, you flip the battery between the wires. That would be a square-wave. just because the voltage increases and decreases between flipping you get the sine-wave. Love your presentation.
Realy need to say this video made things make a lot more sense