Glossary
Conductor cross-section
What is Conductor cross-section?
The cross-sectional area of the current-carrying copper strands of a flexible cable, stated in square millimetres. It determines voltage drop and current-carrying capacity.
What matters about Conductor cross-section in practice?
Fine-stranded cables are used on board because vibration and movement break rigid conductors. The stated cross-section refers to the copper, not to the outer diameter of the cable.
The required size follows from two conditions: the permitted voltage drop — usually the tighter one on board — and the current-carrying capacity for the chosen installation method. The larger of the two applies.
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