Why do outdoor flexible cables fail early?

Outdoor flexible cables can fail because of UV exposure, ozone attack, temperature cycling, abrasion, and repeated bending.
The most common problems are sheath cracking, conductor fatigue, insulation damage, and water ingress.
For cranes, festoon systems, outdoor machinery, and temporary power routes, the cable must match the required bend radius, flex cycle, tensile load, and outdoor rating.
“Outdoor cable” should not be selected only by colour or sheath thickness.