• What kinds of insulated wires are there?

    What kinds of insulated wires are there?

    21-09-2018

    Answer: There are commonly used insulated wires: polyvinyl chloride insulated wire, PVC insulated wire, nitrile polyvinyl chloride mixture insulated cord, rubber insulated wire, agricultural underground direct buried aluminum core plastic insulated wire, rubber insulated cotton yarn Textile cords, PVC insulated nylon sheathed wires, PVC insulated cords for power and lighting, etc.

  • What regulations should be followed when selecting the cross section of a power cable?

    What regulations should be followed when selecting the cross section of a power cable?

    14-09-2018

    A: The choice of power cable should follow the following principles: (1) The rated voltage of the cable is greater than or equal to the rated voltage of the power supply system at the installation point; (2) The continuous allowable current of the cable shall be equal to or greater than the maximum continuous current of the power supply load; (3) The core section must meet the stability requiremen...

  • How to distinguish between

    How to distinguish between "national standard" and "non-standard" of wire and cable?

    08-09-2018

    It is recommended that you look at it, two tests, three weighs, four price, five copper, six quality tests, and six strokes. A look: look at the wire and cable products with or without quality system certification, see if the certificate is standardized, see if there is a factory name, site, inspection chapter, production date, and see if the trademark is printed on the wire, specifications, volta...

  • Cable laying method

    Cable laying method

    31-08-2018

    The laying methods of the cable include direct burial laying, pipe laying, shallow groove laying, cable trench laying, cable tunnel laying, and overhead laying. In terms of skill comparison, cable tunneling methods and cable trenching methods are the best method of laying, as these two methods facilitate cable construction, maintenance and repair. In some developed cities, when planning and buildi...

  • The difference between YJV cable and VV cable

    The difference between YJV cable and VV cable

    25-08-2018

    YJV and VV are two cables with different insulation materials. Generally, indoor permanent projects tend to choose YJV cables. VV cables are generally used in low voltage systems, and YJV cables are mostly used in high voltage systems. YJV cables are superior to VV cables in temperature resistance, pressure resistance and corrosion resistance. Just the price is more expensive. YJV—copper core XLPE...

  • How to distinguish between flame retardant and fire resistance of cables?

    How to distinguish between flame retardant and fire resistance of cables?

    17-08-2018

    Some electrical designers have unclear the concept of flame-retardant cables and fire-resistant cables, and do not understand the structure and characteristics of the two, resulting in the inability to properly design and select these two cables according to the power supply requirements, and design agents or supervision work on site. The installation of these two cables cannot be properly guided....

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