What effect does moisture have on transmission lines if not prevented?

Moisture can have a significant negative impact on transmission lines, leading to interference and signal degradation. When moisture infiltrates the insulation of transmission lines, it can cause a reduction in the dielectric strength, which is the ability of an insulating material to withstand electric stress without conducting electricity. This can result in increased leakage currents and potentially short-circuited connections.

As moisture accumulates, it can also create a conductive path that might lead to crosstalk between adjacent cables, introducing unwanted electrical noise that interferes with the intended signal. This interference can distort signals and reduce the clarity of communication, leading to lower quality and reliability in transmitted data. Protecting transmission lines from moisture is therefore critical to maintain optimal performance and prevent degradation of the signal quality.