In control cable applications, which component must be grounded for effectiveness?

In control cable applications, grounding the drain wires is essential for effectiveness. Drain wires serve as an integral part of the cable design, providing a low-resistance path for fault currents and any electromagnetic interference (EMI) that may be present. Proper grounding of the drain wires helps in mitigating noise and ensuring signal integrity by diverting unwanted electrical currents and interference away from the conductors that carry the main signals.

When the drain wires are grounded, they help to shield the inner conductors from external interference, thus improving the overall performance of the control circuitry. This is particularly important in environments with high levels of electromagnetic interference, where grounding can significantly improve system reliability and functionality.

The other components of a control cable, such as insulation, conductors, and outer sheath, play important roles in protecting the wires and maintaining the integrity of the electrical signals. However, they do not serve the specific function of providing a grounding path like the drain wires do. Thus, for effective control cable applications, grounding the drain wires is crucial for minimizing noise and enhancing signal performance.