True or False: Electrical wiring within a fire-rated floor-ceiling assembly can be supported by ceiling assembly or support wires.

The assertion that electrical wiring within a fire-rated floor-ceiling assembly cannot be supported by the ceiling assembly or support wires is accurate. In fire-rated assemblies, maintaining the integrity of the fire-resistance rating is crucial. The wiring must be separately supported, ensuring that if there is a fire, the wiring does not compromise the assembly's performance by aiding in the spread of flames or heat.

The National Electrical Code has specific requirements regarding the installation of wiring in fire-rated constructions, promoting practices that do not interfere with the fire-rating. In general, the support and installation methods need to be in strict compliance with the requirements that protect the assembly's fire-resistance characteristics. Thus, relying solely on the ceiling assembly or support wires for this purpose is not permissible.