When you install fiber optic cable outdoors, you must respect environmental limits. You should maintain proper cable sag in aerial installations. UV Exposure: Prolonged sunlight degrades standard plastic. A fiber connector left exposed to rain, sun, and temperature swings is a ticking time bomb for your internet connection. We break down exactly why this happens, what will fail first, and how to fix it yourself or force your ISP to do it right. Physical damage, such as cuts or fraying, can degrade the quality of your connection, leading to slower speeds or, in severe cases, complete disconnection.