Substantial planning is needed including complex engineering and design, preparation of construction documents, material gathering, identification of material storage locations, potential GIS extensions, other power utility interconnections at the remote ends, identification of. Substantial planning is needed including complex engineering and design, preparation of construction documents, material gathering, identification of material storage locations, potential GIS extensions, other power utility interconnections at the remote ends, identification of. Technical Specification for Cable tray installation and cable laying work Page 1of 10 Technical Specification for Cable tray installation and cable laying work 1. Scope :- This specification covers the following major activities; - Fabrication and installation of Mild Steel (MS) support structure. cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned in this technical guide only apply to our own cable management ranges and cannot under any circumstances be transposed to si osure, overheating or. association representing the major electrical equipment manufac-turers in the U. For projects that are not 100 percent defined before design start, the cost of and time used in coping with continuous changes during the engineering and drafting design phases will be substantially less for cable tray wiring. A GI cable tray (Galvanized Iron Cable Tray) is a structural system that protects, routes, and supports electric wires and cables in industrial, commercial, or even infrastructure projects. Due to their corrosion-resistant abilities, the GI tray systems are preferred over aluminum or plastic.