Cable Tray Support Span

Vertical straight lengths should be supported at intervals dictated by the building structure not to exceed 20 ft.

Cable tray support span. This classification is based on the working load the total weight of the cables and the support span the distance between supports. Do not use a cable tray as a walkway ladder or support for people. Using cable trays as walkways can cause personal injury and also damage cable tray and installed cables. On each side of an expansion connection.

One or more spans iec 61537 7 3i for installations with more than one span it is important to notice that the loading capacity is not the same form one end to the other. Vertical cable tray elbows at the top of runs should be supported at the joint on each end. Support load calculation per iec 61537. Cable tray support span the distance between the center lines of supports.

The basic types of cable tray supports are. Cable tray support a device which provides ad equate means for supporting cable tray sections and fittings. Cantilever bracket trapeze single rod suspension. The support span should not be greater than the straight section length.

Ladder ventilated solid 4. The nema classes are based on cable loads of 50 75 and 100 per lineal foot. Snaptrack tray standard 20 lengths. Intermediate support for upper tray required on piperacks over 6096mm wide.

Hazardous voltages in electrical equipment can cause severe personal injury or death. Support spans support span is the distance between the supports. Select tray sizethere are different widths and heights of cable tray and what you require will depend on number size spacing and weight of the cables in the tray. The nema standard support spans are based on 8 12 16 and 20.

Vertical cable tray elbows at the bottom of runs should be supported at the top of the elbow and within 610mm of the joint at the bottom of the elbow. Cable tray is a mechanical support system for cables and raceways. A support should be located 2 ft. The nema classifications for cable tray were established to simplify and standardize the specification of cable tray.

Cable load working load the cable load or the working load is the total weight of the cables to be placed in the tray. Cable tiesis a type of fastener especially used for binding and organising several cables or wires together or to a cable management system. Code standard widths are available in 15cm 30cm 45cm 60cm 75cm and 90cm. Section 2 manufacturing standards 2 1 materials.

Select the type of traythere are three different types of cable tray.