In the electrical wiring of buildings, a cable tray system is used to support insulated electrical cables used for power distribution, control, and communication. Cable trays are used as an alternative to open wiring or electrical conduit systems, and are commonly used for cable management in commercial and industrial construction. They are especially useful in situations where changes to a wiring system are anticipated, since new cables can be installed by laying them in the tray, instead of pulling them through a pipe.
A cable tray is a unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways.
Per the National Electrical Code, a cable tray system is “a unit or assembly of units or sections and associated fittings forming a rigid structural system used to securely fasten or support cables and raceways.” Cable trays support cable the way that roadway bridges support traffic.
Several types of tray are used in different applications. A solid-bottom tray provides the maximum protection to cables, but requires cutting the tray or using fittings to enter or exit cables. A deep, solid enclosure for cables is called a cable channel or cable trough.
A ventilated tray has openings in the bottom of the tray, allowing some air circulation around the cables, water drainage, and allowing some dust to fall through the tray. Small cables may exit the tray through the ventilation openings, which may be either slots or holes punched in the bottom. A ladder tray has the cables supported by a traverse bar, similarly to the rungs of a ladder, at regular intervals on the order of 4 to 12 inches (100 to 300 mm).
Ladder and ventilated trays may have solid covers to protect cables from falling objects, dust, and water. Tray covers for use outdoors or in dusty locations may have a peaked shape to shed debris including dust, ice or snow. Lighter cable trays are more appropriate in situations where a great number of small cables are used, such as for telephone or computer network cables. These trays may be made of wire mesh, called "cable basket", or be designed in the form of a single central spine (rail) with ribs to support the cable on either side.
Common cable trays are made of galvanized steel, stainless steel, aluminium, or glass-fibre reinforced plastic. The material for a given application is chosen based on where it will be used. Galvanized tray may be made of pre-galvanized steel sheet fabricated into tray, or may be hot-dip galvanized after fabrication. When galvanized tray is cut to length in the field, usually the cut surface will be painted with a zinc-rich compound to protect the metal from corrosion.
Perforated Cable Tray are single piece construction that are either ventilated or solid bottom. They are used primarily with power cables, control cables. They come in Light, Medium & Heavy Duty depending on client’s specifications & site conditions. Perforated Cable Tray are single piece construction that are either ventilated or solid bottom. They are used primarily with power cables, control cables. They come in Light, Medium & Heavy Duty depending on client’s specifications & site conditions.
Ladder Type Cable Tray Consists of Two Longitudinal side channels connected by individual traverse channels that provides a solid rail protection & system strength with smooth radius fittings & a wide selection of material/finishes.
Basket cable tray are described as go-to solutions for routing and supporting numerous cable runs. The wired frame enhances air circulation and cable ventilation. This can be appropriate beneath desks, elevated floors, or hanging tray systems. You can assemble basket trays for intersections, horizontal sections, mounting braces, hardware, and tray cutters.
Raceway and Cable Tray Trunking are widely used in laying out underground cables and wires. We offer our Raceway in single or multi columns for installation of one or more cable connections simultaneously. Our range is extensively used in Telecommunications, Electronics, Electrical companies and others.