The Provisions Of Industrial Cable Line
1.The cable must contain all working cores and cores used as a protective zero line or protect the conductor line. A three-phase four-wire power distribution cable line must be a five-core cable.
Five-core cable must contain light blue, green / yellow two-color insulated core. Light blue core wire must be used as N line; green / yellow two-color core wire must be used as PE line, prohibited mixed.
2.The choice of cable cross-section should be in accordance with the provisions of its long-term continuous load allowable ampacity and allow the voltage offset to determine.
3.Cable line should be buried or overhead laying, it is forbidden to set along the ground, and should avoid mechanical damage and corrosion medium.Buried cable path should set bearing marker.
4.Choose the cable type should be based on laying mode, environmental conditions. Buried laying should use armored cable; When select the non-armored cable should be able to waterproof, anti-corrosion. Overhead laying should use unarmoured cable.
5.Cable directly buried laying depth should not be less than 0.7 m, and should be in the cable is close to the top, bottom, left and right side of the uniform laying not less than 50 mm thickness of fine sand, then cover the hard layer such as brick or concrete slab.
Gongyi Cable Wire Co., Ltd. is a professional cable and wire manufacturer in China, mainly supply Insulated Overhead Cable, PVC Control Cables,XLPE Power Cables,BV Electric Wires,Buried Cable,High Voltage Cable,House Electric Wire,Civil Wire And Cable etc. series of wire and cable products, sincerely welcome everyone to visit.