Where cable trays pass through fire-rated partitions, walls, and floors, appropriate fire-stops should be provided to prevent the spread of a fire or the by-products of combustion. Cable trays should not be installed in any passageways where they could be damaged. In the power industry, the purpose of implementing fire-blocking sections (fire sections/fire partitions). Cable tray installation must comply with specific technical standards to ensure electrical safety, system reliability, and long-term maintainability. Route. Securing cables within the cable trays is important to maintain proper spacing between cables, keep the cables inside the trays, and confine the cables to specific locations within the trays. Where cables pass through shafts, walls, slabs, or enter electrical panels or cabinets, openings shall be tightly sealed with firestopping materials in accordance with. This manual will offer practical engineering knowledge about material choice, grounding standards, and heat dissipation to make your cable management system as safe as it can be internationally, and with a high level of operational efficiency. 1 Can power and data cables go in the same tray? 8. Adhere to manufacturer-recommended fill ratios to maintain adequate airflow and prevent heat build-up.