Content of angle iron brackets for cable tray installation

Angle iron brackets for cable tray installation are typically fabricated from mild steel (MS) with dimensions 50 x 50 mm and 6 mm thickness, used to support cable trays at regular intervals with proper fastening and isolation.

Material and Dimensions

Angle iron brackets are generally made of mild steel (MS) for strength and durability. A common specification is 50 x 50 mm with 6 mm thickness, suitable for supporting cable trays and associated loads. For larger spans or bridge supports, MS 'C' channels (e.g., 150 x 75 mm, 5.

7 mm thick) may be welded to angle brackets to provide additional structural support. Fabrication and InstallationWall-mounted supports: Angle iron brackets are fabricated and installed at intervals of approximately 1 meter along the cable tray route. Bridge supports: For longer spans, angle brackets are combined with MS channels to form a bridge structure, welded to existing supports as required.

Fastening: Brackets are typically fastened to walls or structures using high-strength bolts, such as Hilti nut bolts of minimum 75 mm length. Isolation: To prevent electrical conduction and corrosion, G-10/FRP sheets (e.g., 400 x 100 mm, 10 mm thick) are placed between the bracket and the cable tray or existing metal support.

Load and Spacing Considerations

Maximum load per hanger can range from 318 kg to 340 kg, with support spacing up to 3. 6 meters depending on the cable tray type and installation environment. Proper spacing and alignment ensure that the cable tray remains stable and can safely carry the intended cable load.

Finishing and Corrosion Protection

After fabrication and welding, the MS angle brackets are typically primed with red oxide and finished with enamel paint (e.g., Siemens grey) to protect against corrosion and provide a smooth surface. Galvanization or other corrosion-resistant coatings may also be applied depending on environmental conditions.

Compliance and Standards

Cable tray systems and their supports, including angle iron brackets, should comply with BS EN 61537 or equivalent national standards. Installation should be performed by qualified personnel familiar with electrical codes, safety procedures, and structural requirements. In summary, MS angle iron brackets of 50 x 50 mm, 6 mm thick, with proper fastening, isolation, and finishing, form the core support for cable tray installations, ensuring mechanical stability, electrical safety, and compliance with standards.