What factor can affect the lifespan of cable jackets other than current?

The correct answer is that various environmental factors significantly impact the lifespan of cable jackets, and these include ambient temperature, humidity levels, and ultraviolet exposure.

Ambient temperature affects the material properties of cable jackets. Higher temperatures can lead to accelerated degradation of the materials, while low temperatures may cause brittleness. Each material used in cable jackets has an optimal temperature range for performance, which, when exceeded or not met, negatively influences lifespan.

Humidity levels also play a crucial role in the longevity of cable jackets. High humidity can facilitate mold growth, corrode metal components, or weaken the insulation material, leading to a shortened lifespan. Materials that are not adequately moisture-resistant may deteriorate more quickly in humid conditions.

Ultraviolet (UV) exposure is another critical factor. Over time, UV rays from sunlight can break down the chemical structure of the jacket materials, causing them to become brittle, cracked, or discolored. Materials not explicitly designed to resist UV degradation are particularly at risk in outdoor applications.

Considering all of these factors—ambient temperature, humidity levels, and ultraviolet exposure—they collectively contribute to the overall durability and lifespan of cable jackets. Therefore, acknowledging that all these conditions can affect cable integrity justifies the choice of "All of the above" as the most