When cable trays pass through walls or floors, seal openings using fire-rated penetration sealing materials. Do not modify or damage the tray coating or structure during use. A. Effective underfloor cabling infrastructure is a core component of modern building systems and data centers, enabling reliable connectivity, stable airflow, and consistent compliance across complex environments. It supports coordinated routing beneath raised floors, integrates mechanical and. Cable trays may be designed to cross through partitions and walls, as well as go vertically through platforms and floors. 2 should be provided in accordance with NEC Section 300. Typically, specific building codes should be. All cables should be supported in cable tray that is run overhead, above the equipment or under the raised floor.
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