Q&A Basic Knowledge You Should Know About Wires
After reading this blog, you will get a better understanding about wires and their uses.
What are the commonly used wires and cables according to their uses?
Answer: Wire and cable can be divided into bare wire, insulated wire, heat-resistant wire, shielded wire, power cable, control cable, communication cable, radio frequency cable, etc.
What types of insulated wires are there?
Answer: The most common types of insulated wires include: flexible wires, PVC flexible cables, rubber-sheathed insulated wires, agricultural, underground buried aluminium cables, rubber-sheathed insulated cables, PVC insulated wires, and PVC insulated cables.
What kind of occasions is the cable tray suitable for?
Answer: The cable tray is suitable for indoor and outdoor overhead laying of power cables and control cables in general industrial and mining enterprises. They are also ideal for indoor and outdoor installations in the telecommunications, radio and television sectors.
What are cable accessories?
A: The most commonly used wire and cable accessories include cable terminal junction boxes, cable intermediate junction boxes, connecting pipes and terminals, steel wire ducts, cable trays, etc.
What is a cable intermediate connector?
Answer: The cable intermediate joint is a cable line connection device that connects the cable and the cable conductor with the insulating shielding layer and the protective layer.
What is a power cord?
Answer: Mains electrical wiring refers to the electrical installations of power plants, leading electrical equipment and busbar connections in substations, including the connection of primary cables and wire busbars to the factory power system according to specific functional requirements.
What principles should be followed when choosing an ideal power cable cross-section?
Answer: The selection of the ideal power cable cross-section should follow the following principles.
The rated voltage of the cable should be greater than or equal to the rated voltage of the power supply system at the installation point.
The continuous allowable current of the cable should be equal to or greater than the maximum constant current of the supply load.
The cross-section of the iron core should meet the requirements of the stability of the power supply system during a short circuit.
Verify that the voltage drop meets the requirements based on the cable length.
The minimum short-circuits current at the end of the line should enable the protection device to operate reliably.
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