Cable is usually composed of several or several groups of wires (at least) two in each group of twisted rope like cable, insulated between each group of wire, twist and often revolve around a center, the bread has a highly insulating layer.
Set up in the air or in underground and underwater, used for telecommunications or electricity.
Cable can be divided by its utility power cables, communication cables and control cables, etc.
1. The cable cross each other, high voltage cable should be at the bottom of the low voltage cable. If one of the cable in the intersection before and after 1 m within the scope of pipe protection or separated by partition, the minimum allowed distance of 0.25 m.
2. Cable and heat pipe near or cross, such as heat insulation measures, parallel and cross the minimum distance of 0.5 m and 0.25 m respectively.
3. The cable tube and rail or road intersection should wear protection, protection tube should be 2 m out of track or road.
4. The distance between cable and building foundation, should be able to guarantee the cable buried outside the building aproll; Cable entry building should wear pipe protection, protection tube should also be beyond aproll outside buildings.
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