Before installing cables in a plenum, what is a primary consideration?

Before installing cables in a plenum, compliance with local building codes is a primary consideration because these codes dictate the safety and performance standards that must be adhered to in different areas of construction. Plenums are commonly used for air circulation in heating and cooling systems, and therefore, the materials used in these areas must meet specific fire and safety criteria to minimize hazards like smoke development and flame spread.

Local building codes may stipulate the type of cables that can be used in plenum spaces, often requiring cables that are rated for plenum use, such as those made with low smoke and flame-resistant materials. Adhering to these codes ensures not only compliance with regulations but also enhances the safety of the building's occupants by reducing potential fire risks and maintaining appropriate air quality.

Other considerations, while important in their own right, do not carry the same weight in ensuring overall safety and compliance as adherence to local building codes when dealing with installations in plenum spaces.