Oklahoma Electrical Practice Exam

What is the requirement for wiring located within the cavity of a fire rated assembly?

1. It must be part of the fire rated assembly

2. It must be insulated from the assembly

3. It must be supported by independent support wires

4. It cannot be conducted within the cavity

The correct answer is: It must be supported by independent support wires

The requirement for wiring located within the cavity of a fire-rated assembly emphasizes the need for proper support to ensure the integrity of the assembly. When wiring is installed within such cavities, it must be supported by independent support wires. This is critical because it helps maintain the fire-resistance rating by preventing wires from sagging or being damaged, which could compromise the fire stop mechanisms within the assembly. Supporting the wiring independently ensures that the pathways for electricity do not interfere with the materials designed to resist the spread of fire and smoke, thereby contributing to the overall safety and performance of the fire-rated assembly. This approach is consistent with codes and standards that aim to protect structures and occupants by maintaining the necessary fire safety measures. Proper installation practices, including independent support, play a vital role in adherence to fire-safety regulations and the effectiveness of fire-rated assemblies.