Cables & Installation Material for Boats
- The correct cable cross section is essential -
The maximum permissible voltage loss of navigation lights is 5%, which is 0.60 V for a 12 V vehicle electrical system. For other consumers, the voltage loss is 7%, which corresponds to 0.84 V for a 12 V vehicle electrical system.
The required conductor cross-section, wherein the permissible voltage drop (V) is not exceeded, is calculated as follows:
Since the current is multi-directional and it has 2 cores, the conductor length is twice as large as the cable length (the distance between the consumer and battery). The constant 56 = conductivity of copper.