plug-in board is the most common tool in our daily life, which provides great flexibility for the use of electrical appliances. But in fact, it also has certain safety hazards. For example, a three-hole patch panel called "universal socket", which looks not much different from ordinary patch panels, was used by as early as 2010. The State Administration of Quality Supervision, Inspection and Quarantine strictly banned . Why is this?
Compared with the name of the power strip, I believe that more people like to call it a power strip. Professionally speaking, it is also called a multi-position socket with a line. The scientific name is a wire extension and extension. Line socket.
It can be used to connect more than one power plug, optimizing the circuit structure and saving space at the same time.
On a complete strip structure, in addition to the socket head, the strip body and a copper core power cord not shorter than 1.5 meters, there is also one inside. The fuse whose ampere parameter is proportional to the number of slots in the jack.
Because it is the place that directly contacts the current DC plug like ordinary sockets, the manufacturing materials of the plug strips are mainly plastic, such as some good insulating ceramics and bakelite will also be used to make the plug strips.
"Universal socket" refers to the socket that can be inserted into both three-hole and two-hole plugs.
Many people will be surprised when they see it here, isn’t this the most common long-short-span switch?
I always have it at home! No no no,You have to take a closer look at the jack of the "universal socket". There is an obvious difference from the universal multi-hole socket that conforms to the national standard. The jack is large.
This "universal socket" was not only developed to meet the requirements of three-level plugs and two-level plugs at the same time, but also to be compatible with various types of foreign plugs including British and American standards. . The consideration is very comprehensive, and the starting point is also good. Unfortunately, there will be a fatal flaw in actual use:
The size of the jack is modified without changing the shape of the metal contact and the fuse, which will cause it to fail. Deformed and damaged after repeated unplugging and plugging of plugs of different shapes and specifications.
As a result, the contact area between the socket metal lug and the electrical plug is too small, or the contact is poor. The resistance increases accordingly, the contact piece overheats and ignites, causing a fire accident.
In order to prevent this kind of situation from happening and prevent it before it happens, the AQSIQ and National Standardization Management Committee promulgated the "new national standard" as early as 11 years ago. Clear standard specifications are given for the appearance, size and performance of the plug-in strip, and the reproduction, sale, and use of this kind of porous "universal socket" are expressly prohibited.
Unfortunately, through investigations by some reporters, it was discovered that many ordinary citizens were unaware of the new national standard prohibiting the use of "universal sockets", and there are more or less in their homes. Two-hole and three-hole large jack socket.
In their eyes, this type of socket is basically the same as the universal multi-hole socket.Where do you know the hazards of "universal sockets".
If it is said that the speed of news circulation in the past is slow, it is excusable for everyone to lack awareness of the ban.
Why can those manufacturers who specialize in manufacturing "universal sockets" turn a blind eye to the new national standard for 11 years and have been secretly producing things that have long been banned?
I can only say that these unscrupulous merchants are really good at finding "business opportunities" in the knowledge blind zone of the public. Moreover, they are huge and numerous, it is not easy to eliminate them all at once.
Therefore, before the government really pays attention to the issue of "universal sockets" and starts to rectify it vigorously, we must popularize the dangers of "universal sockets" so that more and more people will know.
At the same time, learn to choose the plug-in strips with good safety performance and manufacturing process that meet the national standards.
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