Cable tray / trunking installation
Cable tray / trunking installation
- To make sure that the entire installation is in conformance and in accordance with the design intent of the project for the Electrical and Low Voltage System in addition to the specification and as per approved shop drawings and comply with Local and International Standards.
- hanger rods together with nuts and locking washers, supports channel hold down clips all of which shall have a galvanized finish. Any cut ends support’s, rods, etc, must be corrosion protected by use of galvanized or equal. No extended rods to be left.
- Additional support shall be provided where the Cable Tray / Trunking changes direction or cables drop out of the cable tray. Dome headed bolts, nuts and washers of finish suitable to the tray shall be used between trays.
- able tray shall be installed with a 40mm minimum space between the structure and the tray.
- All cable shall be securely fixed to the tray, work and the complete installation must be carried out in a neat and workmanlike manner without crossovers.
- If cables are bunched or single cables greater than 25sq mm are installed, cleats or metal straps shall be used.
- Earth continuity conductors shall be provided across gaps in all Cable Tray / Trunking runs and bolted connections.
- Accessories: – Vertical elbow -up, Reducer, Horizontal tee, Support cantilever Arm, Horizontal
- cross piece, Horizontal elbow, Straight ladder, Vertical elbow down.