Cable Tray Size Table

To the requirements in table 392 7 b.

Cable tray size table.

Table 310 15 b 16 formerly table 310 16 allowable ampacities of insulated copper conductors rated up to and including 2000 volts 60 c through 90 c 140 f through 194 f not more than three current carrying conductors in raceway cable or earth directly buried based on ambient temperature of 30 c 86 f. There are 50 mm 100 mm 150 mm 300 mm 450 mm 600 mm 750 mm 900 mm sizes of electrical cable trays. Instrument cables and control cables are should have to be lay in perforated tray. 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 tray width as per following table.

Ladder type cable tray. Chart is based on 50 fill of 4 utp category 6 cable o d 21 033lbs ft not maximum loading weight for the tray. 4 multiconductor control and or signal cables only a ladder cable tray containing only control and or signal cables may have 50 of its. The total cable tray width inches 5 36 6 00 11 36 inches.

Solid bottom cable tray the allowable cable area is reduced by 22. For each cable tray size the used in size lists parameter specifies that the size is displayed in lists throughout revit including the cable tray layout editor and cable tray modify editor. Article 392 i no of multi core cables less than 2000 volts in the cable tray a 4 0 awg kcmill 120 sq mm cable or larger cables. Practical guide on the amount of cable weight that can be installed tested in accordance with nema ve 1 csa e222 2 126 1.

Tray must have an inside available width equal to or greater than the sum of the diameters of the cables which installed in a single layer. You can add modify or delete sizes as needed. A 12 inch wide cable tray is required. All cable tray sections and fittings are legibly and durable marked to show the cross sectional area of metal in channel cable trays or cable trays of one piece construction and the total cross sectional are of both side rails for ladder or trough cable trays.

You use the size table to specify the cable tray sizes that can be used in your project. Cable tray size as per national electrical code 2002. From table 3 the cable tray width required for small cables is 6 inches.