Which method allows optical fiber to be attached to the exterior of a raceway?

Attaching optical fiber to the exterior of a raceway is commonly done using aerial spans to raceway-type masts. This method is specifically designed to support the installation of cables, including optical fiber, in overhead applications. By securing the optical fiber along raceway-type masts, engineers ensure that the installation is not only efficient but also protected from environmental elements while maintaining proper tension and slack requirements.

The aerial span method typically allows for flexibility in installation and can be utilized in various terrain and structural settings. It also ensures that the optical fiber is appropriately distanced from any potential interference coming from the ground or other installations.

Other methods, such as direct burying in the ground, involve placing cables underground, which is not suitable for attaching them to exterior surfaces. Hard wiring through PVC is more about securing the cable within a conduit and does not address the specific requirement of exterior attachment. Using standard cable clamps might offer some form of securing ability, but it typically lacks the structural support and protective framework designed for overhead spans, especially when dealing with various environmental factors.