What is the construction and specification of low voltage cables?

First, how is the structure and specifications of low-voltage cable? Low-voltage cable lines and low-voltage overhead lines, low-voltage overhead insulated lines compared to the higher cost, laying and maintenance is more difficult, but because it has a reliable operation, does not set up poles, does not occupy the ground, does not impede the appearance of the outside world by the influence of the lesser and other characteristics of the low-voltage power distribution system is widely used. Low-voltage cable structure: by the core, insulation and protective layer of three parts. Core The core is used to conduct current, and is generally made of strands of copper wire or aluminum wire. Low-voltage cable specifications: low-voltage cables are single-core, double-core, three-core, four-core and other types. Dual-core cable for single-phase lines, three-core and four-core cable for three-phase three-wire lines and three-phase four-wire lines, single-core cables can be applied to single-phase lines or three-phase lines as needed. Commonly used low-voltage cable core cross-sectional area of 10, 16, 25, 35, 50, 70, 95, 120, 150, 185, 240 mm and so on.

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