Spacing Standards: Electrical (power) and instrumentation (signal/control) cable trays should maintain a minimum vertical and horizontal distance. Clause 522-08-04 Where conductors or cables are not supported. The distance between trays affects not only the ease of maintenance but also cable protection, heat dissipation, and system stability. The spacing between trays, whether horizontal or vertical. Grounding: Metallic trays can serve as equipment grounding conductors (EGC) if they meet NEC requirements. Separation: High-power and low-power cables must be separated to. Cable tray (or cable ladder) systems are a popular alternative to electrical conduit systems, as they have an outstanding record for dependable service, design flexibility and cost savings in commercial and industrial applications. 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. When developing our cable support OBO can offer reliable solutions for systems, three attributes are at the routing and fastening cables securely core of what we do: efficiency, resil- for each of these installation challeng-ience and safety. es in the industrial environment.