Do You Know the Correct Installation Methods for Cable Trays?

2025-11-24 01:28:29

Basic Installation Requirements

Cable tray joints shall be smooth, with tight, straight seams. After installing the cover, it shall be flat without warping, and outlet positions shall be accurate. When laying in suspended ceilings, manholes shall be provided if the ceiling is inaccessible for maintenance.

For horizontal installation, the support span shall generally be 1.5-3m; for vertical installation, the distance between fixed points shall not exceed 2m. Trays shall be smooth, free of distortion, with no burrs on the inner wall, and complete accessories.

All non-conductive iron parts of the tray shall be bridged and connected to form a continuous conductor for integral grounding. Braided copper wire shall be used as the grounding jumper between adjacent trays.

When channel-type cable trays pass through building expansion joints, the tray itself shall be disconnected. The troughs shall be lapped with connecting plates without fixing. The protective earthing conductor and wires inside the trough shall be reserved with compensation allowance.

For straight-section steel trays, safety construction rules and regulations shall be strictly implemented: strengthen the management of construction personnel, implement safety construction technical measures, inspect and supervise the safe operation of construction personnel, and ensure safe and civilized construction.

Pre-Construction Preparation

Organize construction personnel to study construction standards and familiarize themselves with construction drawings. Construct strictly in accordance with design requirements, relevant regulations, and standards. Conduct real-time inspections of construction quality and rectify problems promptly.

Scaffolding, gantry frames, electrical equipment, mechanical equipment, and safety protection devices used on the construction site shall comply with relevant safety regulations and can only be used after passing acceptance.

Do You Know the Correct Installation Methods for Cable Trays?

Construction Personnel Code of Conduct

Must abide by and implement relevant safety production and civilized construction management systems, and accept inspections and supervision by the construction unit's supervisors.

Must wear safety helmets when entering the construction site; safety belts must be fastened during high-altitude operations.

When working in control rooms or switch rooms, a supervisor must be present. Operations shall be performed under power-off conditions. Remove metal items such as watches, keys, lighters, and pens, and wear insulating gloves and insulating shoes.

Prior approval from the supervisor shall be obtained before organizing and arranging cables, which must be carried out under the supervisor's supervision.

Clean up the construction site after the completion of work.

Safety Construction Management System

Strictly record the entry/exit time, number of personnel, and work content when entering or leaving the work area.

Construction personnel must wear work badges, safety helmets, and work clothes when entering the work area for construction.

Smoking is strictly prohibited in the work area. When working in live operation areas (only permitted when necessary), insulating gloves and insulating shoes must be worn.