On a horizontal cable tray system, flat insulated electrical cables are laid and fixed in a group, and on a vertical cable tray system, horizontal cable trays are laid and fixed with 20mm stainless steel strips. This method applies when a conduit is installed inside a wall, against a wall or spaced less than 0. 3 x D (overall diameter of the cable) from the wall. A rung spacing of 6 to 9 inches (150 to 230 mm) is preferable when the cable tray cont d for instrumentation and control applications that require. us-trations without notice. All illustrations, descriptions and technical information included in this document are provided as indications and can cable trays are equivalent. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. The cable is an important part of the Cable tray supplier, when we design the cable tray, we will also The cable is an important part of the Cable tray supplier, when we design the cable tray, we will also design the cable layout scheme of the cable tray, so how to arrange it in the actual. Cable tray installation can be conducted in a flat building or operating structure. These systems, made from metal or plastic, are open structures designed to support electrical conductors, ensuring proper organization and safety. Here's what you need to know: Cable Types: Only use.