Cable Tray Width

50 fill ratio.

Cable tray width.

Calculate size of cable tray for following cable schedule. Cable are laying in single layer in cable tray. 5 10 2x6x10 13 2. B cables smaller than 4 0 awg kcmill 120 sq mm ladder type cable tray.

Distance between each cable is 10mm. The sum of the cable diameters is not to exceed 90 of the available 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. Solid bottom cable tray.

Tested load capacity lbs ft. Cable tray should be perforated and 20 spare capacity. Cable weight lbs ft. Total cable tray width required is 8 56 inches 6 90 inches 15 46.

Space between cables must be equal to 2 15 times one cable diameter 3 x 2 15 x 1 07 inches 6 90 inches. 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. There are 50 mm 100 mm 150 mm 300 mm 450 mm 600 mm 750 mm 900 mm sizes of electrical cable trays. Total width of the cables 8 x 1 07 inches 8 56 inches.

To determine the required width of a ladder or ventilated trough cable tray as per section 318 11 b 4. 90 outside flange b with solid bottom s shown below 90 inside flange c with perforated bottom v shown below.