Common national standard wire and cable models and specifications
DueWire and cable for electrical equipmentThere are many types, and there are different classification methods for wires and cables for electrical equipment according to their characteristics. Comprehensive product performance, structure and manufacturing technology similarity, combined with the power system wire and cable use characteristics, electrical equipment wire and cable can be divided into bare wire, magnetic cable, power cable, electrical equipment wire and cable, communication wire and cable three categories.
1. Power system
Suitable for electrical equipment with wire and cable products mainly include overhead transmission lines with bare wires, busbars, power cables and electrical equipment with electrical equipment with wire and cable.
2. Information transmission system
Electric Wires and Cables for Electric Equipment Electric wires and cables used in information transmission systems include telephone cables, cable television cables, data transmission cables, radio frequency cables for mobile radio communication systems, various electronic cables, and the like. In recent years, the proportion of wires and cables in the power system in the information transmission network has increased rapidly and has become the main transmission medium of information transmission lines.
3. Internal wires and cables for electrical instruments
Electrical equipment with wires and cables in power and information two systems, from the system starting point (such as generators, signal transmitters) to the system nodes, such as transformers, program-controlled switches, to user terminals) such as household appliances, telephones, televisions, computers, all these equipment.
Where to use wire and cable
 home lighting code
The lighting code uses 1.5 square. The load power of general household lighting is not too large. Dining room, living room, primary and secondary bedroom, balcony, kitchen, toilet 6-8 lights, control within 1500 watts, 1.5 square copper wire is enough.
 water heater socket with line
Wire and cable for electrical equipment: water heaters are relatively large in household appliances, so it is recommend to use 4 square wires. The 4 square copper core wire can withstand a load of 7000-8000 watts at most, and the limit value is 8000 watts. Therefore, there is no big problem when the water heater and the bus are turned on at the same time, and the overload is only tripping.
 air conditioning socket cord
The air conditioner is also a high-power household appliance. Therefore, the socket also uses 4 square wires. Of course, 6 square meters can also be used, but in this way, the construction will be difficult, the area occupied by the bottom box of the socket will also become larger, and the wiring will become very troublesome.
 code of ordinary socket
Ordinary sockets at home can use 2.5 square wires, and the general load is controlled within 2500 watts. However, when often using high-power electrical equipment, it is recommended to choose 4 square wires.
 kitchen socket wire
The socket in the kitchen recommend 4 square wires, on the one hand because there are many appliances in the kitchen, on the other hand because of the high frequency of use. Some kitchens have square wires through the ceiling, sockets are arranged below, and 2.5 square wires are used to ignite. All sockets are connected separately from four-way wires, so this is no problem.
Want to know moreOverhead insulated cable, control cableThe content, can pay attention to us.
What are the main points of purchasing wires and cables? Let's take a look. As the main carrier of power transmission, wire and cable are widely used in electrical equipment, lighting circuits, household appliances, etc. Its quality directly affects the quality of the project and the safety of consumers' lives and property. There are many wire varieties on the market, and appropriate wires should be used according to their own power load.
What are the precautions for wires and cables? Let's take a look. Common cable faults: wire surface markings-according to national standards, the wire surface should have continuous markings of the manufacturer's name, product model and rated voltage. This helps to find the manufacturing plant in time when there is a problem during the use of the wire, and consumers should pay attention to this when buying the wire.
There are many kinds of wire and cable products for electrical equipment on the market, which are difficult for ordinary consumers to distinguish. So what are the main categories of wire and cable products? What are the product naming principles of wire and cable? The editor brings you a brief understanding of relevant content knowledge.
The wires and cables for electrical equipment are mainly used for internal or external connection of electrical equipment, low-voltage transmission lines and various electrical signal transmission lines. Generally speaking, except for power cables, communication cables and magnet wires, most insulated wires and cables are classified as wires and cables for electrical equipment.
Electrical equipment with wire and cable is a large class of wire and cable products, a wide range of applications, many varieties, many series, large output, process type complex. The rated voltage of wires and cables for electrical equipment is low, and the working voltage is 450/750v and below, which is not more than 0.6/1kv. The working voltage of signal and instrument cables is usually 300/500v and below. The ampacity of the cable is determined according to the requirements of the cable.
Low voltage power cable winter pay attention to matters? As the weather gets colder and colder, manufacturers of low-voltage power cables usually become more difficult, which brings inconvenience to construction. Here are some precautions for winter construction. Let us take a brief look.