Flame-retardant wire is suitable for plastic-insulated power cables rated at AC voltages up to 110kV, plastic-insulated control wires up to 450/750V, and electrical equipment up to 450/750V. It is primarily used in power transmission and distribution, control, alarm, and fire protection systems. So, what are the characteristics of flame-retardant wire? Is it necessary for everyday home renovations? Let's take a look.
What are the characteristics of flame-retardant wire?
The fundamental characteristic of flame-retardant wire is that it can contain the spread of flames within a certain range in the event of a fire, preventing major damage caused by wire ignition and spreading, while protecting other equipment and avoiding further damage.
The difference between ordinary insulated wire and flame-retardant wire is that the outer plastic insulation layer of flame-retardant wire contains a flame-retardant component. Most ordinary insulated wire and flame-retardant wire are visually indistinguishable. Flame-retardant wire is divided into three grades: ZA, ZB, and ZC. ZA and ZB are the highest grades and are generally used in military, aviation, and municipal engineering projects. ZC is more commonly used in residential applications. Currently, all flame-retardant wires in Ganchang are marked with ZC, such as ZC-BV2.5 and ZC-BVR2.5. [The Relationship Between ZR, ZA, ZB, ZC, and ZD in Flame-Retardant Wire]
Is flame-retardant wire necessary for home renovations?
Construction acceptance standards are very strict, requiring the use of flame-retardant wire in such areas. Fire departments and project supervisors also conduct on-site spot checks of construction wiring, requiring construction to proceed only after the wires pass tests for flame retardancy and other characteristics. Therefore, flame-retardant wire can fully meet home electrical safety requirements for home renovations. However, there are no regulations mandating that renovation companies or homeowners use flame-retardant wire. However, flame-retardant wire can improve home electrical safety. When burned, it can limit the spread of flames to a certain range, thus preventing major disasters caused by fires spreading from the wires.
This is an introduction to the characteristics of flame-retardant wire and its suitability for use in home renovations. Under the condition of a flame temperature of 750-800°C, the cable can operate normally for at least 90 minutes, and its load-bearing capacity in the environment is no less than that of the corresponding cable model and specification under normal operating conditions. The cable's other electrical and mechanical properties are all higher than those of ordinary cables.
