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.
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?
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The Arctic Circle.
Answer for USA, Canada and countries running a 60 Hertz supply service.The US runs 240V single phase in almost all residential applications.It just so happens that the 240V is center tapped to make 120V/240V split phase, but that is still a single phase application.For more information about the supply services in other countries, please see the answer to the Related Question shown below.
The coordinates of Hudson Bay, Canada is 60° 0′ 0″ N, 85° 0′ 0″ W. Therefore, it is the 60th latitude.
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Alberta runs on Present Time all year round.
The same as charging at 60 hertz if you are in a county that runs at 50 hertz and have a charger that runs at 50 hertz.
only 36 runs were scored by Canada against sri lanka in a world cup match
Normally that would be however many volts your house runs on. The US/Canada standard is 120 volts at 60 hertz, while most of Europe runs on 240 volts at 50 hertz. Keep in mind though there are all types of light bulbs that run on all voltages from 12 to 240. It should say the voltage on the bulb though? but if you live in North America and you are asking about a normal house-type bulb, your quest will most likely end with 120.
The world's longest recreational trail that runs across the country of Canada is called Trans Canada Trail. The trail is 14,000 miles long.
Matthew Hayden has scored most runs.That is 659 runs.
Yes, Europe has the most ski runs in the world.
Jimmy Hansra of canada made 70 runs on 99 balls
Mickey Mantle holds the record for most World Series home runs with 18.
Mickey Mantle has the most career World Series home runs with 18.
AS Hansra has scored highest runs in the match.He has scored 70 runs.
Rahul Dravid of India scored most runs in the 1999 Cricket World Cup. He scored 461 runs in the 1999 Cricket World Cup.
The world's longest national highway is the Trans-Canada Highway that runs across Canada from Victoria, British Columbia to and St. John's, Newfoundland covering 7,821 kilometers or 4,860 miles.