Cable Protection: Guarding cables against mechanical damage, moisture, and chemicals. The Cable Tray ng standards, performance standards, test standards and application in this document have been tested extens ompetent professional en completely installed, without damage either to conductors or. Below are the key principles to guide the layout of E&I cable trays, focusing on practical, safety, and efficiency aspects. Separation of Electrical and Instrumentation Cables Electrical on Top, Instrumentation Below: Typically, electrical trays are positioned above instrumentation trays. This. 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. Cable tray functions are designed to prevent these risks by providing a secure structure for cables. Proper cable tray installation improves system reliability, minimizes downtime, and ensures compliance with industry standards. Now, let's dive deeper into the specific cable tray functions that. Mukesh Patel is the Founder & CEO of Build Matt ltd, specializing in Pre-Engineered Buildings (PEB) and general steel fabrication.