What type of cable can be used for conduit, riser, and plenum runs without requiring junction boxes?

The type of cable that can be used for conduit, riser, and plenum runs without requiring junction boxes is breakout cable. This type of cable is designed for flexibility and ease of installation, making it suitable for applications in various environments, including vertical and horizontal pathways.

Breakout cables typically consist of multiple individual fibers that are each housed in their own protective jacket. This design allows for easy access and termination of each fiber without needing to install junction boxes for protection and organization of the fibers themselves. The individual fibers can be connected directly to connectors or equipment without the requirement of additional enclosures, simplifying maintenance and circuitry management.

Other cable types, such as distribution cable, loose tube cable, and gel-filled cable, may have different specific uses, protections, or constructions that can necessitate the use of junction boxes or other protective measures in certain installations. For instance, distribution cables may not have the same ease of access required for individual fiber management, while loose tube cables are often designed for outdoor installations and may not suit indoor plenum applications without additional considerations. Gel-filled cables, primarily used for moist environments, have specific gel materials for protection that also influence installation practices.