Large span cable trays are designed to support heavy cable loads across long distances without intermediate supports. 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. es in the industrial environment. 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. Different from normal cable trays, Large span cable tray has large supporting span with high loading capacities.