Like a wheel turning, Hz is the rate of rotation. A 50 or 60 Hz device is relatively easy to build. But, I content that most people that are killed by electric shock are killed by getting between Hot and earth ground and not between Hot and Neutral..  Ed. Good story however I would like to see the more technical side as to why 60 Hz is the most efficient frequency. The reason I bring up this point because the power station at Niagra Falls was where Telsa first installed his AC system. Other Differences It's usually written in its abbreviated form, which is Hz. Power stations around the world generate electricity by electromagnetic induction, a phenomenon discovered by physicist Michael Faraday and studied by physicists throughout the 19th century. When you touch the input of your amplifier in the US, do you get a 60-cycle hum? On the other side, the 133-Hz advocates were stubbornly typical in their disdain of this “outsider” (aka: “not invented here,” syndrome) and were determined to prove out their own work. Because all electromagnetic radiation travels at the same speed – the speed of light – the frequency of the radiation goes down as the wavelength goes up. Who is the longest reigning WWE Champion of all time? If the side we currently call Hot were connected to Earth Ground then the other side (neutral) would still present the same lethal voltage relative to ground. I've also taken 65KV from a TV Flyback transformer to the chin. Great article and concise explanation for our 60Hz. Electrical outlets in France usually deliver power at 220-240 volts. The electricity of single phase 110v, 120v, 220v, 240v, and three phase 380v, 400v, 415v, 440v, 460v, 480v AC power, are 50Hz or 60Hz frequencies. The reason is unclear, yet some naysayers consider this is a way for French manufacturers to keep the French electrical device market to themselves. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Higher rpm/frequency means higher watt output at the same weight, but also means more wear on the bearings, etc. Interesting to note His writing covers science, math and home improvement and design, as well as religion and the oriental healing arts. A quick summary: Now, I would like to see a discussion of why the neutral is connected to earth ground in the U.S. That competition is a whole story unto itself and one that has left me very cold toward Edison. But for general purpose motors, 50 Hz is better. Probably because it's most common, but I've never heard of anyone being shocked to death from the flyback transformer. So, do you know why Europe is 50 Hz AC (15 to 20 percent less efficient)? Do you mean definition? Knocked me on my azz! We get 50-cycle hum in UK. Monday to Friday from 7 am to midnight, Saturdays from 9.30 am to 6 pm, By continuing your visit to this site, you accept the use of cookies. When I was working in Canada the frequency was 25 Hz in 1957, I was there when they converted to 60 Hz within the next five years. Tying one leg of the electric grid to Earth ground guarantees that the other legs are at predictable voltages relative to the buildings they enter.

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