Cable Tray Width

The total sum of the cross sectional areas of all the cables to be installed in the cable tray must be equal to or less than the allowable cable area for the.

Cable tray width.

Solid bottom cable tray. Total width of the cables 8 x 1 07 inches 8 56 inches. Cable are laying in single layer in cable tray. B cables smaller than 4 0 awg kcmill 120 sq mm ladder type cable tray.

Space between cables must be equal to 2 15 times one cable diameter 3 x 2 15 x 1 07 inches 6 90 inches. There are 50 mm 100 mm 150 mm 300 mm 450 mm 600 mm 750 mm 900 mm sizes of electrical cable trays. 1 2 no s of 3 5cx300 sq mm xlpe cable having 59 7mm outer diameter and 5 9 kg meter weight 2 2 no s of 3 5cx400 sq mm. Perforated slot dimensions and patterns may vary depending on tray size and type.

Distance between each cable is 10mm. Cable weight lbs ft. Cable tray should be perforated and 20 spare capacity. 50 fill ratio.

Calculate size of cable tray for following cable schedule. The sum of the cable diameters is not to exceed 90 of the available cable tray width. Perforated solid cable tray dimensional drawing tray height 75mm width width 75 75 15 25 75 75 50 50 thickness 8 x 20 typ. To determine the required width of a ladder or ventilated trough cable tray as per section 318 11 b 4.

Tested load capacity lbs ft. 90 outside flange b with solid bottom s shown below 90 inside flange c with perforated bottom v shown below.