To adapt to the development of residential buildings, electrical engineers provided valuable opinions. On the basis of single-core prefabricated branch cables, our company has developed a new generation of three-phase five-wire multi-core prefabricated branch cable series products. It is mainly suitable for lighting systems in multi-story buildings.
Due to the large appearance and heavy weight of multi-core cables, the outer diameter becomes larger when making prefabricated branch cables. This causes installation difficulties. Therefore, the maximum multi-core prefabricated branch cable currently produced by our company is limited to 240mm2 and below, with varieties including flame-retardant type, clean type, fire-resistant type and other different specifications.
Currently, when the main cable cross-section of multi-core prefabricated branch cable is 6mm2-50mm2 and branch line cross-section is 4mm2-25mm2, multi-core prefabricated multi-core branch cable can be used; when branch line cross-section is 35mm2-50mm2, multi-core prefabricated single-core branch cable can be used; when main cable cross-section is 70mm2-240mm2 and branch cross-section is 35mm2-50mm2, multi-core prefabricated single-core branch cable can be used; when branch cross-section is greater than 50mm2, single-core prefabricated single-core branch cable can be selected. Main cable can be two-core, three-core, four-core and five-core, branch line can also be two-core, three-core, four-core, five-core and other arbitrary combinations. The current-carrying capacity of multi-core prefabricated branch cable is the same as that of multi-core cable, and the installation method is similar to multi-core cable.
