Why Are There 220 Volts in Your Wall

Did You know? Why Every Country Has a Different Wall Voltage: The Hidden Story of 110V, 230V and 100V | Simple Things Surprising Histories Why does Japan run on 100 volts, the US on 120, Mexico on 127, and Europe on 230? Nobody ever voted on these numbers, and they could have been anything. In this video, we explain how Thomas Edison's early direct current grids, burning carbon filaments, and a century of engineering compromises shaped the electricity in your wall socket. This documentary-style episode from Simple Things Surprising Histories traces the story of household voltage from the first electrical grids of the 1880s to the 230-volt European compromise. Topics covered in this video: Why the numbers on your phone charger say "100 to 240 volts" Why Edison chose about 100 volts and why the standard became 110 How direct current loses voltage over distance The three-wire trick that gave the US both 120 and 240 volts Why America never raised its voltage after tungsten replaced carbon filaments How alternating current and transformers let Europe jump straight to 220 volts The 1980s and 90s European compromise: 230 volts with a ±10% tolerance Why Japan, Mexico, Qatar and Kenya ended up with different values Whether higher voltage could return for electric cars, heat pumps and induction stoves This video is designed for students, educators, and general audiences who want a clear explanation of why countries use different mains voltages, without unnecessary complexity. All explanations are factual, educational, and suitable for learning purposes. If you are searching for: why different countries have different voltages, 110V vs 220V explained, why is US voltage 120V, why Europe uses 230 volts, history of household electricity, Edison direct current history, why Japan uses 100 volts, mains voltage by country, how electrical grids started, this video provides a complete and accurate overview. Question for you: which everyday number should we investigate next? Frame rates, Wi-Fi frequencies, or screen resolutions? Tell us in the comments. #Voltage #HowItWorks #Electricity #ThomasEdison #EngineeringHistory #ScienceExplained #EducationalDocumentary #ElectricalEngineering #sciencefacts #sciencedocumentary #simplethings #simplethingssurprisinghistories Chapter 00:24 To understand the number in your wall 01:15 The farther it travels, the more voltage it loses 02:40 Europe electrified later 03:45 The rest of the world? ⚠️ Copyright Notice • We use images and content in accordance with YouTube’s fair use copyright guidelines. • Section 107 of the U.S. Copyright Act states: “Notwithstanding the provisions of sections 106 and 106A, the fair use of a copyrighted work, including such use by reproduction in copies or phonorecords or by any other means specified by that section, for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright.” • This video may contain certain video clips, images, or photographs copyrighted by others that were not specifically authorized for use by the copyright holder(s), but which we believe in good faith are protected by federal law and the fair use doctrine for one or more of the reasons outlined above.