Use this structured inspection guide to ensure the physical and fire-resistant integrity of cable tray covers across critical facilities. Assess mounting, labeling, fire stopping, and documentation against NFPA, NEC, and ASTM standards. 305(a)(3), or comparable standards promulgated by States. In this detailed guide, we'll explore the essential inspection methods for cable trays, focusing on maintaining their structural integrity, load-bearing capacity, fire resistance, and more. Why Are Cable Tray Inspections Important? Cable trays serve as the backbone of electrical systems, ensuring. Cable tray installation must comply with specific technical standards to ensure electrical safety, system reliability, and long-term maintainability. Route. of each run, and at other points to mai ection 07 84 00 to sustain ratings when passing cable tray throu er equipment grounding conductor through entire length of tray; bond to ea Scope: Firestopping for busway, cable trays, cables, and trunking passing through walls in enclosed electrical installations. Where cables pass through shafts, walls, slabs, or enter electrical panels or cabinets, openings shall be tightly sealed with firestopping materials in accordance with.