Electrical Engineering Basics - How 3 Phase Transformers Work – why we need them

How do 3 phase transformers work, why are three phase transformers used, how do they produce 480V, 277V, 240V, 208V and 120V. What is wye delta, open delta and high leg delta. What is a pad mounted and pole mounted transformer and how is three phase electricity generated? Edit 8:36. Nameplate shows Delta-Wye not Wye-Wye as text shows 💡Need a transformer quick? call Maddox! Dry type and oil filled in stock and ready to ship, from 15kVA to 15MVA! click here ➡️ https://www.maddox.com/ -Ad 🎁 Check these FREE transformer tips and tutorials: ➡️ https://www.youtube.com/@MaddoxTransformer 👑 Get your PDF here: https://tinyurl.com/The-3-Phase-PDF Get your mug here (white): ➡️ https://tinyurl.com/3-Phase-Mug-White or here (blue): ➡️ https://tinyurl.com/3-Phase-Mug-Blue Join our Patreon: ➡️ https://www.patreon.com/theengineeringmindset/ Become channel member: ➡️ https://www.youtube.com/channel/UCk0fGHsCEzGig-rSzkfCjMw/join 🎁15% discount on multimeters.➡️ https://bit.ly/15-off-multimeters (use code EM15 at checkout) ⚡🛠️ TOOLS YOU NEED 🛠️⚡ ******************************* Get this electronics book ➡️ https://amzn.to/41cCJPk Professional Multimeter -➡️ https://amzn.to/3xu2Vaw Good multimeter -➡️ https://amzn.to/3xrbuTd Professional clamp meter ➡️ https://amzn.to/4140FnK Good Clamp meter ➡️ https://amzn.to/3xqt2is Outlet tester ➡️- https://amzn.to/3kavg2l Energy monitoring plug ➡️ https://amzn.to/3SkfPl7 Battery tester -➡️ https://amzn.to/3S3fHWI Basic electronics ➡️ kit https://amzn.to/3xuLiqS MY FAVOURITE GEAR 🎥 My camera - https://amzn.to/3YCZ7Q9 🎤 My Microphone - https://amzn.to/3YYXsUC ⌨️ My Keyboard - https://amzn.to/3lBsl33 🖥️ My monitor - https://amzn.to/415BGjW 🎧 My headphones - https://amzn.to/3lN7R7u 👋 SOCIALISE WITH US 👋 ******************************* 👉FACEBOOK: https://facebook.com/theengineeringmindset/ 👉TWITTER: https://twitter.com/TheEngMindset 👉INSTAGRAM: https://instagram.com/engineeringmindset/ 👉WEBSITE: Http://TheEngineeringMindset.com [0:00] Three-Phase Transformer Explained [0:14] What a Transformer Does [0:30] Three-Phase vs Single-Phase Transformers [1:05] How Split-Phase 120V/240V Works [2:33] Where Three-Phase Power Comes From [3:19] Why Three-Phase Power Is Better Than Single Phase [3:54] Why Power Is Transmitted at High Voltage [4:47] Why Homes Get One Phase and Commercial Buildings Get Three [5:00] Transformer Sizes and KVA Ratings [5:29] How a Transformer Works [6:33] Why Transformer Cores Are Laminated [7:04] Step-Down vs Step-Up Transformers [7:40] How Transformer Power Stays the Same [8:09] Delta vs Wye Transformer Connections [8:34] How to Read a Transformer Nameplate [8:39] Wye Connection Explained [9:16] Delta Connection Explained [10:03] Delta Primary to Wye Secondary Transformer Example [10:46] How to Calculate Transformer Current and KVA [11:28] Wye-Wye Transformer Example for Commercial Buildings [12:34] 480V to 208Y/120V Transformer Explained [13:13] Transformer Taps Explained [14:39] How Transformer Tap Changers Work [15:08] Pole-Mounted Transformer Bank Configurations [15:28] Delta-Delta, Delta-Wye and Open Delta Explained [16:06] Wye Voltage and Current Formulas [16:52] Why 208V Comes From a 120V Wye System [17:42] Square Root of 3 Explained [18:36] Delta Current Formula Explained [19:46] Why Delta Line Current Is Higher Than Coil Current [20:55] Delta-Wye Transformer Calculation Example [21:47] High Leg Delta Explained [22:43] Open Delta Transformer Explained [23:01] Why Open Delta Has Lower Capacity