Marine grade aluminium

GRP

316 Stainless steel

Adequate support on galvanised steel brackets minimum 6 mm thickness

Adequate supports at not more than 2mt centres and intermediate supports at joints

Adequate supports spaced such that the loaded cable tray and ladders does not deflect more than 5mm

Segregation of dissimilar metals using 3mm insulating spacers

All cable trays and ladder fittings, brackets, bolts, nuts, and washers shall be hot dipped galvanised steel and shall match the cable tray and ladder in use

Where cable trays and ladders have been cut or damaged during erection, the resulting exposed metal shall be cold galvanised treated and suitable painted to prevent corrosion

Mounted to maintain 300mm clearance between racks vertically and at least 150mm under structural sections

Cable ladder earthed to the electrical enclosure they originate from or to a metal structure that is earthed

Adequate size to provide 50% spare capacity

All ladder bends, both horizontal and vertical shall have a minimum radius of 450mm for power and control cables

Cable ladder expansion joints installed as per manufacturers requirements

Barrier Strip installed / segregation provided

Cables laid in cable ladder and trays, shall be arranged to minimise cross-overs

Secured at frequent intervals by means of approve metal cable straps of adequate side and strength for the cables involved

Cables tied at suitable intervals on ladder

All cable ties flush cut to eliminate harp edges

Installation neat and evenly spaced

Where cables may be exposed to UV or subject to mechanical damage, peaked covers of similar material shall be clamped to the ladder

Installation does not impede access to walkways

Cable Tray Installation is

Entered on Punch List

Punch list Reference Number: