Why is the household voltage in China 220V, but in the United States it is 110V?

First, because China needs to carry out ultra-long-distance power transmission, the voltage should start high. Americans are relatively few, so they don't use long-distance transmission, so they use 110v. Second, Edison invented the electric light bulb, and after many experiments he found that the bulb was the most stable when running at a voltage of 110V, so he used 110V

There are many things that are inseparable from people's lives, especially the development of science and technology has brought a lot of benefits to the people, and some people joke that now our most ordinary people are living better than the previous emperors.

After all, there was nothing before, no mobile phones, computers, cars, etc., like the current bathroom I don't know how many times than before, we also know that this is thanks to the invention of electricity, without electricity, life and work will be a mess.

Speaking of electricity, it is ubiquitous in our lives, bringing great convenience to our lives, we have to use electricity every night, all kinds of electrical appliances at home are also used to the store, the little partners who have used electricity and plugs should know that the standard voltage in our country is 220V, so why is the voltage in the United States 110V?

The voltage of 110V is stable

Edison invented the electric light bulb, and after many experiments with him, he found that the light bulb was the most stable when it ran at 110V, so he came to a conclusion, that is, the voltage of 110V is relatively the safest and most cost-effective voltage, and it is the most economical voltage in power distribution. The tungsten light bulbs that were developed later were basically based on the luminous efficiency of the bulbs with a rated voltage of 110V, and the bulbs with a rated voltage of 220V were also higher than the only electrical appliances used for the construction of the power system.

It may be that the voltage is relatively low, suitable for long-distance transportation, and it is convenient to use if the voltage is high.

Because China needs to carry out ultra-long-distance power transmission, the voltage starts at a higher point.

Because there are a lot of people in China, the voltage will be greater.

Because we have a large population, the electricity consumption should be relatively large.

Because China's circuit grid is different from that of the United States, this is why it will be like this.

I think it's probably because the voltage of 110V is relatively stable, so I use 110V

Because there are fewer Americans, they need much less electricity.

Because we are a socialist country, we must be different from US imperialism.

This is mainly related to the number of people, China is a large country with a large population.

I think it may be different from the requirements of each country, maybe my country's electricity consumption is relatively large.

I think it is mainly related to China's national conditions, after all, the Chinese population has a large transmission power consumption, and the transmission power in the United States is relatively small.

110v。The voltage in the United States is 120V (** and other overseas rubber territories are 110V), which is much lower than that of Britain and France, because the United States was the first to popularize electricity, and the engine at the time of the attack could not produce such a large voltage.

The voltage in the United States belongs to the American standard power supply, generally single-phase is 120V, three-phase is 208V, and the frequency is 60Hz: The power supply of the American factory is 380V, 760V, 1140V, 3 kinds, and the frequency is 60 Hz.

Voltage is different:

The earliest frequency of commercial AC is 60Hz, the voltage is 110V, its inventor is American, and is funded by the owner of Westinghouse Electric Company in the United States, commercial AC power grid is also put into operation for the first time in the United States. The United States uses the imperial unit to shoot like a mess, and the specification of 60Hz 110V is used for the convenience of calculation.

After the success of commercial alternating current, alternating current generation and feeding technology were rapidly introduced in Europe. All of Europe, except the United Kingdom, use the metric unit, and the frequency has been changed to 50 Hz for ease of calculation.

Later, due to the low voltage of 110V and the large transmission loss of the power grid, in order to improve this situation, in the European continent where the AC power grid is not built on a large scale and thus there is no burden, the voltage specification of 220V is adopted, which is from the 110V double pressure, and the technical transformation is relatively simple, so the AC power grid standard of 220V 50Hz has been formed in the European countries. <>

1. After Edison invented direct current, the United States was the first to use 110V voltage to supply direct current to customers, and later Tesla's invention of three-phase 240V alternating current surpassed Edison's invention. For safety reasons, he lowered the voltage to 110V. With the strong support of Westinghouse Electric Company, it has become the standard for electricity supply in the United States.

After a reform, European countries adopted the AC grid standard of 220V 50Hz. Because at this time, there is an increase in household appliances that are suitable for 110V voltage, and forcibly changing the voltage specifications will eliminate a large number of existing electrical appliances and equipment. Therefore, the United States is considering switching to a 220V power supply standard.

The final reform plan is: 220V electricity enters the home and then divides it into 110V to supply electricity to electrical appliances.

Second, after the founding of the People's Republic of China, the power grid standard is in accordance with the Soviet standard, and the European standard is also adopted. That is, 220V 50Hz. Before the 60s of the last century, the Northeast region and some of the original concession areas of Shanghai still used the 110V voltage standard, and it was not until the late 60s of the last century that it was slowly unified to 220V voltage.

This should be considered based on both economic and security aspects, foreign developed countries are relatively wealthy, they consider security more important than the economy, and for example, Japan is small in size, short lines, and material problems are more secondary.

The use of 110V voltage is still relatively scientific, in my country has no choice but to use 220V. In this way, in China's rural areas, there is still a phenomenon of insufficient voltage and excessive power loss, resulting in the problem of high electricity costs in rural areas.

In general, the power supply standards in the United States are 115V, 230V, 460V, 120V, and 240V. Among them, the 110V range, that is, the same as the international 110V system, can be universal, but usually the voltage can reach 120V, just like China says 220V, in fact, it can also reach 230V.

The AC power supply in the United States is all 60 Hz.

Why is China's electric stamping code pressure 220V, the United States sells judgment hall 110V! It turned out that it was because it was hidden.