The flame-retardant nature of the cable in the case of multiple dense configurations should be by the “burning test method for bundled wires and cables”. As well as the cable configuration, the need to prevent catastrophic accidents and economic and reasonable principles, to meet the requirements of the appropriate category.
Electric cables are mainly used to transmit electricity. It consists of one or more mutually insulated conductors. At present, most of the insulation in the electrical power system is made of PVC, XLPE, and LSZH materials.