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There is a discussion here: http://www.school-for-champions.com/science/ac_world_volt_freq.htm

Summary:

Tesla, working at Westinghouse, in the 1890's designed some of the first electrical generators, and determined that 60Hz was an efficient voltage.

This system was used in other countries, but German engineers dominated Europe, and they decided that 50Hz was a better fit for the Metric system.

Thinking of 50Hz as Metric-friendly is pretty silly, because all of the other time units are not Metric. Hertz is based on seconds, and there's 60 of them in an minute, not 50. It also influenced television frequencies, where it turns out that 50Hz is barely sufficient, and 60Hz reduces eye strain.

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12y ago
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5d ago

The difference in frequency (60 Hz vs. 50 Hz) between the power systems in North America and other parts of the world originated from historical developments of their respective electrical grids. The choice of 60 Hz in North America was influenced by early power system designs and equipment standardization. Switching to a different frequency now would be costly and complex due to the extensive infrastructure built around the existing system.

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12y ago

In Vietnam, and SE Asia, we have 20,000 volts, 50 hz, a main power.

20,000 volts feed Transformers that put out 440 volts, 50 hz.

The 440 volt is run down the street with 1 neutral.

Each house is supplied with 1 hot lead, 440 volt and a neutral.

This allows the power in your home to be 220 volt, 50 Hz.

The motors, toasters etc. run slower because of the 50 cycle.

In the USA it is 60 Hz and a normal motor will run about 1,725 Ppm's.

Over here it runs 25% slower, about.

A 1 tone air conditioning unit is, 12,000 BTU's hour in the USA will only be .75 ton's here. 9,000 BTU and hour.

Why doesn't the USA go to 50 Hz?

jbay1943@gmail.com

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Q: Why do Canada and the U.S. run at 60 Hertz when most of world runs at 50 Hertz?
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