Instrument Cable Tray Loading Calculation

Minimum allowable tray.

Instrument cable tray loading calculation. 2 fill in all pertinent project information. 9 to begin a new calculation return to the input screen and select the clear button. 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. Generally cable tray sizing is correct when it appears 50 full of cable or wire or when it contains a 50 fill of cables or wire.

This will clear both the input and output pages. On tue dec 2 2014 at 7 52 pm electrical notes articles wrote. Not required outside diameter cable qty cable size weight lbs ft total cable weight. Practical guide on the amount of cable weight that can be installed tested in accordance with nema ve 1 csa e222 2 126 1.

To join two components together clamp or fix to walls ceilings or other supports covers and cable retainers associated supports bespoke supports for cable tray and cable ladder other than bs 6946 channel. 6 cable ladder and cable tray systems including channel support systems and other associated supports definitions and abbreviations accessory component used for a supplementary function e g. Tray size of 0 1852 o d. Chart is based on 50 fill of 4 utp category 6 cable o d 21 033lbs ft not maximum loading weight for the tray.

Cable tray should be perforated and 20 spare capacity. The cable tray sizing equals the width times the loading depth. Distance between each cable is 10mm. The quick tray wire mesh cable tray fill table below shows the number of cables and the load in lbf lineal foot developed by typical 4 pair and 6 pair cable weighing 20 lb kft and 40 lb kft respectively while this table is a useful guide actual loads must be calculated using the cable specified.

Cables of 0 21 o d. Calculate cable tray width calculate cable tray area calculate cable tray length calculate cable tray weight calculate remaining width of cable tray calculate remaining area of cable tray free download. The load ratings of the hardware that supports the cable tray must also be considered. 2 x 2 74.

Cable tray wiring systems are the preferred wiring system when they are evaluated against equivalent conduit wiring systems in terms of safety dependability space and cost. Load ratings for some commonly used supports are shown in the tray support maximum load table in below section. Once the load foot has been determined the weight on each cable tray support can be determined by multiplying the load foot by the number of feet. Calculate size of cable tray for following cable schedule.

To properly evaluate a cable tray wiring system vs. Lbs ft inside tray depth. A conduit wiring system an engineer must be knowledgeable of both their installation and the system features. Cable id cable o d.