For large openings, install a fire-resistant backing plate before sealing. Layout and positioning must be reasonable to facilitate installation and maintenance. Choose appropriate fire protection materials, such as fire-rated board, firestop packs, firestop mastic, or. This guide explains the critical steps in fireproof cable trays acceptance, covering coating processes, inspection standards, and more. By following these steps, you can enhance durability and comply with national safety requirements. Process flow: reserved openings → busway installation → distribution box positioning and installation →. The EZ Path® Cable Tray Retrofit Device provides a fast, code‑compliant way to restore firestopping performance in cable trays with up to 100% visual fill. This comprehensive checklist helps facility managers and maintenance personnel identify potential issues with fire-rated cable tray covers before they lead to. Cable tray installation must comply with specific technical standards to ensure electrical safety, system reliability, and long-term maintainability. Route. Therefore, it is crucial to set up fire-blocking sections (fire sections/fire partitions) on cable trays and select appropriate fire-blocking sections (fire sections/fire partitions) materials.