Hint: Sun-damaged cables.
Every one of the white cables installed here are control circuits for air conditioning equipment. And every one of these cables is suffering from severe damage from sunlight. The jackets are brittle, broken, and falling off. The conductor insulation is cracked, and in some spots the conductors are exposed.
Section 722.3(J) of the 2023 Code requires power-limited cables to comply with “the applicable requirements in 110.11, 300.5(B), 300.6, 300.9, and 310.10(F) when installed in corrosive, damp, or wet locations.” Section 110.11 states “unless identified for use in the operating environment, no conductors or equipment shall be located in damp or wet locations; where exposed to gases, fumes, vapors, liquids, or other agents that have a deteriorating effect on the conductors or equipment; or where exposed to excessive temperatures.” Section 300.6 states “raceways, cable trays, cablebus, auxiliary gutters, cable armor, boxes, cable sheathing, cabinets, enclosures (other than surrounding fences and walls), elbows, couplings, fittings, supports, and support hardware shall be of materials suitable for the environment in which they are to be installed.”
When we look at these rules, we may be able to determine that these cables must be sunlight resistant, and wet location rated. Anything less results in the damage we can see in the photo.
