When electricity was first introduced into homes and businesses, it was primarily used to power lighting. Early equipment and appliances had to be wired directly into the building's electrical system. This was somewhat inconvenient-you probably couldn't easily move a light from one room to another without rewiring it-a potentially dangerous task for most people. Next, the wall switch and socket supplier will share it with you.
Beginning in the 1880s, several inventors patented a variation of the connector that allowed the power cord of a device to be screwed into a light bulb socket to supply power. (Historian Fred EH Schroeder says that Thomas Edison was not one of these inventors, which was a "curious oversight" on his part because he "foresaw almost everything that could be related to the incandescent light bulb and its applications. ") These connectors are simpler and safer because they are screwed into the socket, dropped or pulled too hard on the power cord, which means you can damage the device, the cord or or the switch and socket.
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In the early 1900s, inventor Harvey Hubbell improved on the idea with his Separable Attachment Plug. The plug had an inner connector screwed into the light socket and an outer connector (attached to an appliance by a cord) that plugged into that via two prongs and could easily be popped in and out. It was the ancestor of the modern two-prong plug and socket.
Other inventors soon came up with improvements and safety features for this ancestral plug (such as a third pin for grounding, insulation of the pins and a plug shape that ensures the plug is properly connected to the socket). All over the world, inventors, tinkerers and engineers have gone about this task in their own ways, and we end up with many different plugs and sockets that all start with the same basic concept, but are designed in very different ways.
At the time, there was no real reason why they shouldn't have been different. The world was not as connected as it is today, and appliances were not as common. International travel was not readily available or possible for most people, and even those who might be able to cross the pond might not carry a lamp or fan with them. It doesn't matter if people half a world away can use the plugs you are developing, so different countries and regions do things their own way and have developed plugs and sockets based on local and national standards, which often vary widely from one another.
Switch And Socket
By the time travel and appliance portability were at the point where standardization made sense, electrically wired homes and electric appliances were widespread, and switching to new plugs and sockets was an expensive proposition—which is not to say that a global standard doesn’t exist and a switch over can’t be done. In 1986, the International Electrotechnical Commission unveiled a “universal plug,” known as a Type N plug, that they hoped would become a widespread standard. So far, though, only Brazil and South Africa have adopted the design for their plugs and wall outlets.
In 1986, the IEC introduced a "universal plug" called the "Type N" plug, which they hoped would become a universal standard. However, so far, only Brazil and South Africa have adopted the plug and wall outlet design.
If you're abroad, not only will plugs and sockets vary, but the voltage and frequency of electricity used in the home may also vary from region to region. Even when traveling with a plug adapter, voltage differences mean that gadgets may not work properly or may be damaged.
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