Why do you need this incomprehensible hole in the center of the plug? After all, she appeared there for a reason

Have you noticed that most electrical appliance plugs have a hole right in the center? Do you know what it is used for? It looks like this. Look at the photo

And this is not just a random hole that formed for no particular reason. This hole has a functional purpose.

Take a closer look at the fork. It has not only the usual "pins" that are inserted into the socket, but also a hole in the center, as well as side holes that are used when plugged into grounded sockets.

Side vents are made for the safety of people. They contain grounding contacts. Grounding plugs may be plugged into dedicated grounding outlets. This prevents electric shock to a person, because thanks to such a device, no voltage is generated on the housing of electrical appliances.

Not all electrical appliances have grounding plugs. Some devices do not need this, because so they don't pose any danger. For example, if the body of the device is completely made of plastic. As you know, plastic does not conduct electric current. Also, there is no grounding for devices with low voltage. But still, most manufacturers complete their products with plugs with connectors - with grounding contacts. By doing so, they show that they care about the safety of their customers. By default, it is considered that a plug with such contacts is an additional plus to the quality of the device.

With the side holes sorted out. Now let's move on to the "hole" in the center.

What is the hole in the center of the plug of electrical appliances for?

Not all plugs have such holes, but only those electrical appliances that are used (sold and manufactured) in Europe and the European Union. Only there is a requirement - to make forks with holes.

This is because in Europe and the European Union, most outlets in appearance are slightly different from ours. This is the European standard. Outlets have an extra plug that must fit into the hole in the center of the plug when you plug it into the socket.

In Europe, this is an additional security measure. This tab on the outlet will prevent you from inserting a potentially hazardous plug without a hole in the middle. Thanks to this notch, it will not be possible to plug the plug into the outlet upside down, which is also considered unacceptable.

Basically, this hole on the plug and the tab on the outlet have the same grounding function and serve to protect people from electric shock. But in the countries of Europe and the European Union, such protection is considered safer.

Did you know about it?

In general, there are so many little things in the world that are so important, but we do not notice them! Such as the hole in the plug of electrical appliances! Or there is a little trick in the usual "carrot" dowel, which even many professionals do not know about. But I'll tell you about this tomorrow! So subscribe to the channel so you don't miss out!