Electrical conductors must use copper wire sections. If you live in an old house, you must replace the original aluminum wire with copper wire. Because the aluminum wire is easy to oxidize, the joint is easy to catch fire. A survey shows that the incidence of electrical fires in houses using aluminum wires is dozens of times that of copper wires.
In addition, for the sake of beauty, many families will adopt the way of slotting and burying wires and laying concealed pipes. Xia Dong reminded that when wiring, the principle of "live wire enters the switch and zero wire enters the lamp holder" must be followed, and a leakage protection device should be installed on the socket.
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According to the different structures and uses, white electrical sockets are mainly divided into mobile electrical sockets, embedded wall electrical sockets, cabinet sockets, desktop sockets, intelligent electrical sockets, industrial electrical sockets and ordinary electrical sockets.
History of power outlets: When electricity first entered the home, it was mainly used for lighting. At that time, there were no plugs and sockets, so in order to make electrical connections, people had to twist wires on the terminals.
There are many appliances. If the wires are twisted every time, it will be very troublesome and dangerous, and when a large number of non-professionals join the ranks of users, it will cause many safety problems and serious electric shock accidents. HarveyHubbell applied for a patent for this power socket at 1904.
References:
Baidu encyclopedia-five-hole socket