What are the differences between sockets and plugs in the United States and China, and how are their standards stipulated?

1. Difference: The essence of the problem is not that if two China plugs are inclined straight, they are the same as American standard. But the plug voltage in China is 220V, and that in the United States is 120V. Even if it is straightened, it can't be used indiscriminately. It needs a converter.

American plug:

China plug

Second, there are many kinds of UL plugs in the United States, including three plugs and two plugs.

Three pins are L+N pins, and the grounding is round copper tube.

Two plugs are. L+N plug, similar to domestic one. There is a round hole at the front end of the plug. Two plugs are as big as two plugs, and there is an N/ neutral plug with large front end and large polarity.

Third, the American civil AC voltage is 1 10V, 60hz；; In China, it is 220V and 50Hz, and the general conversion sockets are not equipped with transformers.

The connectors of general electronic products and the pins of electrical appliances are called plugs. Plug and socket of household AC power supply, which has a male connector protruding in the form of a rod or a copper plate, and is physically inserted into a female connector type power supply socket with a groove or a concave hole. Size is an important technical requirement, which is related to whether plugs, sockets and converters can be used safely and meet the requirements of universal interchangeability to avoid wrong insertion. The unqualified size will affect the user's use or cause hidden dangers such as poor contact and wrong insertion, damage the equipment and cause fire and electric shock accidents.

(Refer to Baidu Encyclopedia)