My friends in Canada must have known:
The Canadian socket voltage is 110V instead of the 220V on the Chinese socket.
Does the voltage also have national boundaries, which are different for each country?
So, is 220V a Chinese characteristic?
Can the electrical appliances of the two countries use each other?
First look at the voltage situation of a group of countries' civil electricity~
In this way, there are still many countries in the world that use 220V AC.
Why are there two kinds of alternating current? Is the effect the same?
In 1879, Edison produced carbon filament incandescent lamps with better effects. At that time, the incandescent lamps operated well under 110V DC voltage. Edison believed that this was a safe and economical voltage in power distribution.
But later, another voltage level-220V is also recommended for use in the low voltage field.
After the two great geniuses Edison and Tesla quarreled on the issue of "strong DC or strong AC", the United States slowly began to generally adopt 110V AC.
Of course, the United States has actually seen many voltage types during the development of the power system, but 110V and 220V are the main ones, and 110V has gradually won during the development process.
With the advancement of electrical appliances and the development of transmission methods, there is no difference between 110V and 220V in practical use.
Why does China not use 110V AC power like the United States and Canada?
Because, after the 110V AC voltage was adopted in the United States, Europe believed that the 110V voltage was too low, and the loss in transmission was a bit larger (at that time, transformation and high-voltage transmission were not very common), which led to certain electrical appliances. If it is not strong enough, it will push 220V and it will be inherited by most countries.
Everyone knows that the old China had low productivity and poor economy. It could reduce a little loss and reduce the consumption of copper and other metals. Of course, it is very good. 220V is easily accepted by power supply operators.
In the 16th year of Guangxu in the Qing Dynasty (1890), Shanghai began to use incandescent lamps with a voltage of 100V. In the 27th year of Guangxu (1901), the Shanghai Public Concession began to supply power day and night, and the voltage was changed to 200V.
On September 12, 1930, the Nationalist Government announced China's first voltage and frequency standard in the form of an order of the Construction Committee, stipulating 220V and 50Hz as China's standard voltage and standard frequency.
After the founding of New China, a lot of waste is waiting to be developed. It is of course good to save a little. Therefore, the "Rated Voltage and Frequency Standards" and the "Power Supply Rules" that have been formulated many times use 220V as the standard.
Is 110V electricity safer than 220V electricity?
In principle, the lower the voltage, the higher the safety. Someone has calculated that the time required for 110V to cause a pathophysiological reaction or even fatal harm to the human body is indeed longer than 220V, which is about 100 milliseconds away...
But in fact, 110V and 220V are both greatly exceeded The range of safe voltage.
In addition, in the event of an electric shock, what really determines the safety is the magnitude of the current that passes through, so whether there is danger or not depends more on the electric shock environment.
Does China and Canada use electrical appliances mutually? Will there be problems due to voltage differences?
If high-voltage electrical appliances are brought to low-voltage countries, such as China with 220V electrical appliances brought to the 110V environment in Canada, under normal circumstances, it can be used barely, but it is often lingering or pulling a car like a bull The same function is greatly reduced. I brought a hair dryer from China. Although it can be used, its power is very, very low, and it can hardly dry my hair.
If low-voltage electrical appliances are brought to high-voltage countries, such as those applicable to CanadaIn China, because the voltage is doubled in an instant, almost all the electrical appliances you bring back cannot be used, and you must use a voltage transformer, otherwise it will burn the electrical appliances or affect the service life of the electrical appliances.
However, many companies have noticed the differences in the voltages of different countries. Therefore, many electrical appliances are designed with adaptable voltages. Before use, look at the nameplate of the electrical appliance or the identification of the plug. If there is "100~240V" , Which can be adapted to Chinese voltage or Canadian voltage.
Another thing to pay attention to is the type of plug. Some electrical plugs in Canada are different from Chinese plugs and cannot be inserted into Chinese sockets. This requires a plug converter.
Of course, if you often go abroad, it is recommended that you bring your own conversion plug and transformer. Increase knowledge! Why does Canada use 110V while China uses 220V?
