BICSI Outside Plant Designer (OSP) 2025 – 400 Free Practice Questions to Pass the Exam

The primary role of subsidiary conduits is to route cables from the main conduit to termination points, such as equipment or distribution frames. This function is essential in an outside plant infrastructure as it ensures that the various data and communication cables can be efficiently and effectively delivered to their intended locations while maintaining organization and protecting the cables from environmental factors.

In an outside plant design, the main conduit serves as a larger pathway for a bulk of the wiring and cabling, while subsidiary conduits branch off from this main conduit and provide more direct, localized pathways that lead to specific equipment or termination points. This arrangement minimizes cable strain and allows for easier access and maintenance, contributing to the overall efficiency and reliability of the network.

The other options provided do not accurately describe the specific function of subsidiary conduits. While connecting buildings and acting as a main distribution frame are important functions within a network design, they are not the primary role of subsidiary conduits. Additionally, containing only feeder cables is not correct since subsidiary conduits may carry various types of cables, not just feeders, but also jumpers or risers as they lead to termination points.