Fixing of cable trays for prefabricated houses

Cable trays in prefabricated houses should be fixed using connectors, bolts, and support systems aligned with pre-installed fixing points, ensuring secure, gap-free installation.

Step-by-

Step Installation1. Preparation and Planning Before installation, verify the layout plan, tray size, and load capacity. Ensure the cable tray system matches the design requirements and complies with local electrical codes.

Check that the prefabricated modules have designated fixing points for cable trays to simplify alignment and reduce structural modifications. 2. Tools and Materials Common tools include a Phillips screwdriver, step ladder, M6 bolt assemblies, connectors, and support brackets.

Materials should be approved by the project consultant to ensure compliance with safety and quality standards. 3.

Securing Cable Trays

Install connectors onto the pre-installed metal cable trays. Align the trays with the fixing points on the prefabricated modules. Partially tighten bolts to allow minor adjustments, then fully tighten to secure the trays.

Verify that trays are properly aligned and there are no gaps between sections. 4.

Support Systems

Use wall brackets, suspended supports, or center-hung supports depending on the module design. Maximum support spacing is typically around 3. 6 meters, with load capacities ranging from 318 kg to 340 kg per hanger.

Ensure trays are fixed at regular intervals to prevent sagging and maintain cable integrity. 5.

Cable Installation and Safety

Lay cables in an organized manner, avoiding excessive bending. Do not exceed 40% of tray capacity to prevent overheating. Use markers for cable identification to facilitate maintenance.

Follow safety induction and ensure personnel are trained in handling prefabricated modules and cable trays. 6.

Inspection and Verification

Conduct a final inspection to ensure all bolts are tightened, trays are aligned, and supports are secure. Check for compliance with technical standards and verify that the installation will not interfere with other prefabricated components. By following these methods, cable trays in prefabricated houses can be installed efficiently, safely, and in a way that supports long-term system reliability.