What about a one-hole or five-hole socket?
Let's recall that before the popularization of circuit breakers in China, what did our family rely on to protect the circuit? That's right, the fuse!
In the era of the invention of the 86-type switch socket, fuses were used all over the world to protect circuits. Its principle is to use the thermal effect of current to increase the current in the circuit, and at the same time increase the calorific value. When the calorific value reaches a certain height, fuse and disconnect the circuit. Fuse? )。 This requires the melting point of the fuse to be the same as the temperature in the circuit when the circuit is overloaded.
However, the fuse is a disposable product, and replacing the fuse requires certain professional knowledge. When replacing fuses, ordinary people are prone to electric shock. Therefore, it is required to reduce the possibility of circuit overload to!
How to reduce it? The simplest and direct control method is to control the number of electrical appliances in the room. The rated current of each socket is fixed (10A). As long as the sockets are not overloaded, it is easy to get the current of the whole room by counting the number of sockets in the room. When the thickness of wiring and fuse is selected according to current, everything becomes very simple. So, the key point here is? Make sure the socket is not overloaded? . All electrical appliances have regulations on plugs when they leave the factory. The current of any plug that can be plugged into a five-hole socket should not exceed 10A. Therefore, if an electrical appliance is plugged into the socket, it will not overload the socket anyway.
However, if two appliances are plugged into a socket at the same time, everything will become uncontrollable. For example, the rated current of one appliance is 6A, and the rated current of one appliance is 8A. When plugged into the socket at the same time, the current flowing through the socket is 6+8 = 14A, which will cause the socket to be overloaded. Therefore, in order to ensure that the circuit is not overloaded, the simplest method is to plug only one electrical appliance into a socket.
But at that time, in the era of fuses and circuit breakers, the cost of circuit overload was reduced to the point where circuit breakers tripped. At this time, the user can open it by himself, without additional expenses and professionals. At the same time, the circuit breaker can also give users a warning: the circuit is overloaded and needs to check the power consumption immediately. Then why until today? Does the anti-humanity five-hole socket still exist?
Second, how to choose an indoor socket?
1, depending on the structure and appearance
When choosing an indoor switch socket, you should choose a switch socket with excellent appearance and high gloss, and choose a switch socket made of PC material, which has good flame retardancy, insulation and impact resistance. It is not easy to deform and fade, so the switch socket made of PC material can greatly reduce the fire caused by circuit failure.
Step 2 look at internal information
When we buy indoor switch sockets, we also need to look at the internal materials. Usually, the internal parts of the switch are made of red copper, and the internal parts of the socket are made of phosphorus copper, because phosphorus copper has good conductivity, high strength and is not easy to deform. The socket of silver alloy contact is selected as the switch contact, because silver alloy can avoid oxidation caused by arc and has excellent conductivity.
3. See if there is a protective door.
When we choose a switch socket in the bathroom, we choose one with a protective door to avoid water vapor splashing into the socket.
Third, how to plan indoor switch sockets?
1, porch
Leave a socket and switch at the entrance, which can be controlled by the switch in the living room, so that the entrance can also turn on the lights in the living room, which is very convenient.
2. Living room
There are many electrical appliances in the living room, so you can leave more sockets for grounding, such as: TV (2), air conditioner (1), and both sides of sofa (1).
Step 3: Kitchen
There are many appliances in the kitchen, so you can prepare more socket switches. The switch socket in the kitchen can be waterproof and safer to use.
4. Bedroom
For the bedroom, you can reserve 5-7 switch sockets, try to use the ground wire, and you can use sockets at the bay window.
5. Bathroom
There can be three bathrooms, washing machine (1), hair dryer (1) and electric water heater (1). For the socket at the edge of the bathroom cabinet, you can choose a splash-proof cover to prevent scalding by water.
When using household appliances, everyone must pay attention to the correct use method, so as to ensure the health and safety of family members, especially pay attention to carefully selecting sockets. The above is about how to introduce the five-hole socket. When choosing an indoor socket, you can choose the appropriate socket type according to your installation location, which is convenient for your family to use.