At SV Electricals, we have crafted this guide to show you how to install cable tray on wall step by step. As a top cable tray manufacturer in India, we understand what makes our star product the go-to alternative to open wiring. Reason #1: Cost Savings Many a time, changes, additions and refinement of the wiring. Scope :- This specification covers the following major activities; - Fabrication and installation of Mild Steel (MS) support structure for Galvanized Iron (GI) Cable tray. - Installation of perforated GI Cable tray of size 300 x 50 mm at height ~12 meter on wall and existing metal support structure. Cable tray systems are designed for easy installation and to accommodate power, communications, and signal cabling across a variety of applications.