Marine cables
Cables used in surface and underwater ships and other floating structures on the water, adapted to the use environment of ships, and with special properties.
Marine cables are composed of single or multiple mutually insulated conductive core wires composed of multiple strands of twisted wires and an outer sheath or an outer sheath with a metal armor layer.
Cables are generally divided into two categories: trunk cables and local cables. All cables that meet one of the following conditions are called trunk cables.
- Passing through more than two watertight bulkheads.
- Passing through more than one deck.
- Special specifications or large-section cables.
- Primary power network cables starting from the main distribution board.
The direction of the trunk cable should be straight, with fewer unnecessary bends, and should avoid passing through cabins, cold storage, radio rooms, and cabins with explosive gases. When laying, a reliable cable fixing rack should be used. The cable should not be knotted or damaged when threading. When laying the cable, try to place the thick cable on the lower layer.
The direction of local cables depends on the layout of electrical appliances. When laying cables, if it is reasonable to lay them on the same route as the main cables, they can be laid together; otherwise, they can be laid in a separate route. When laying local cables, the cables should be kept away from places that are susceptible to mechanical damage, moisture, oil pollution, high temperature, explosive gas and corrosive gas, otherwise appropriate measures should be taken.