How to choose the cross section of marine cable?

I. Marine cable cross-section how to make a choice?1) According to the cable power supply circuit, estimate the cable may carry a large load current.2) According to the different ambient air temperature when the correction factor, the correction factor of laying in bundles and the correction factor of discontinuous work, the pre-selected cable's rated current-carrying capacity is corrected, and the corrected current quota of each cable should not be less than the cable may carry.3) Calibrate the line voltage drop To ensure that the cable under normal operating conditions to carry large currents when the voltage drop does not exceed the relevant norms, rules and regulations of the specified value. 3) The conductor should have sufficient mechanical strength to meet the laying and working conditions. General single-core cable and double-core cable are selected 1mm2 or 1.5mm2 or more. 4) Three-phase AC power supply system, when the cable cross-section is larger (generally limited to 120rnm2), you can use two or more three-core cable used in parallel. Parallel use of the cable should have the same impedance, the same cross-section and the same conductor rated temperature, its current-carrying capacity for all the parallel conductor current rated sum. But only the cross-section equal to or greater than 10rmm2 cable is allowed to be used in parallel. 5) temporary emergency low-voltage lamps and lanterns, due to the limitations of the size of the stuffing box, the selection of the cable cross-section should not exceed 2.5rmm2. 6) into the battery room of the battery connecting cable should be used for a single-core cable in order to facilitate the connection of .

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