Selection Steps and Principles for Marine Wire Selection in the Marine Wiring System

1. Select the appropriate cable type based on the cable's application, installation location, and working conditions.

2. Select the appropriate cable cross-section based on the operating schedule of the electrical equipment, type of power source, cable conductor, and load current.

3. Based on the system short-circuit current calculation results, does the fragmentary cable meet the short-circuit capacity requirements?

4. Adjust the rated current capacity of the cable based on the environmental temperature, then determine if the allowable current of the cable exceeds the load current.

5. Adjust the rated current of the cable based on the bundled laying correction factor, and then determine if the allowable current of the cable is greater than the load current.

6. Verify the voltage drop across the circuit, determining if the voltage drop is less than the specified value.

7. Determine if the cable and protective device are coordinated based on the setting value of the protective device; if not, assess whether it's possible to adjust the appropriate protective device or setting value. Otherwise, select a suitable cable cross-section again.