Final answer:
When installing fiber optic cable in conduit, the maximum fill ratio defined by the NEC must be adhered to, ensuring safe installation and protecting the integrity of the cable.
Step-by-step explanation:
When preparing to install a fiber optic cable in conduit, it's important to be aware of the maximum fill ratio percentage by cross-sectional area as defined in the National Electrical Code (NEC). The NEC specifies the amount of space that must be left in a conduit to avoid overcrowding, which can lead to increased friction, difficulty pulling the cable through, and potential damage to the cable itself. Therefore, adhering to the NEC's fill ratio requirements is crucial for the safe and effective installation of fiber optic cables in conduit.