What safety consideration should be taken when installing conduit?

Maintaining appropriate fill limits in conduit installations is crucial for several reasons directly related to safety and system performance. When conduits are filled beyond their rated capacity, it can lead to several issues, primarily overheating of the conductors. Overheating occurs due to the increase in electrical resistance when wires are packed too tightly, which can lead to insulation breakdown and potentially cause electrical fires.

Design standards and codes, such as the National Electrical Code (NEC), provide specific guidelines on the maximum number of conductors allowed in conduits based on their size and the type of conductors used. Following these guidelines ensures that there is adequate space for heat dissipation and reduces the risk of thermal buildup.

In addition to preventing overheating, proper fill limits also facilitate easier installation and maintenance of the wiring system, reducing the chance of damage to the conductors themselves during installation or future modifications. Thus, maintaining appropriate fill limits is essential not just for safety but also for the reliability and longevity of the electrical system.