Naming conventions for cable tray hangers and accessories

Cable tray hangers and accessories are named based on their type, function, dimensions, and material, following standardized conventions to ensure proper identification and compatibility.Overview of Cable Tray SystemsA cable tray system consists of cable support lengths (trays, ladders, or mesh trays), fittings, support elements, mounting elements, and accessories . Each component has a specific role:Cable support lengths: Straight sections for routing cables.Fittings: Components for changing direction, height, or width (e.g., bends, T-pieces, cross-overs, reductions, end closures).Support elements: Brackets, suspended supports, or center suspensions that attach trays to ceilings, walls, or floors.Mounting elements: Plates or fasteners for attaching devices or junction boxes to the tray.Accessories: Barrier strips, covers, cable protection rings, or other protective components .Naming ConventionsCable tray components are typically named using a structured format that conveys type, size, and function :Type Identifier: Indicates the component type, such as:CT: Cable TrayCL: Cable LadderCM: Cable Mesh TrayH: Hanger or supportF: Fitting (e.g., bend, T-piece)Dimensions: Width, height, or length of the component, often in millimeters or inches. For example:CT300x100: Cable tray 300 mm wide, 100 mm high.Function or Orientation: Specifies the purpose or direction:H90: 90° horizontal bendV45: 45° vertical bendT: T-pieceX: Cross-overR: ReductionEC: End closureMaterial or Finish: Optional suffix to indicate material or surface treatment:SS: Stainless steelGI: Galvanized ironAL: AluminumPVC: Coated or insulated finishPart Numbering: Manufacturers often assign unique part numbers combining the above elements for ordering and inventory purposes .ExampleA typical part name might be: CT300x100-HS-SSCT: Cable tray300x100: Width 300 mm, height 100 mmH: Hanger/supportS: Standard typeSS: Stainless steel Similarly, a 90° horizontal bend in a 200 mm wide tray could be named: CT200-H90-GICT200: 200 mm wide cable trayH90: Horizontal 90° bendGI: Galvanized ironStandards and ReferencesDIN EN 61537: Defines cable support systems, including trays, ladders, supports, and accessories, and provides guidance on terminology and classification .Manufacturer Catalogs: Legrand, OBO, ABB, and Unitech provide detailed part numbering and naming conventions specific to their product ranges .Material and Finish Codes: Often follow international standards (e.g., Aluminum Association designations for aluminum alloys, UL or NEMA certifications for compliance).SummaryCable tray hangers and accessories are systematically named to indicate type, size, function, and material, ensuring clear communication between designers, installers, and suppliers. Using standardized naming conventions helps prevent errors, ensures compatibility, and simplifies procurement and installation in industrial and commercial electrical projects.