Everyone, take a look and see if my choice of cable tray size is appropriate
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For example, I currently have 300 cables of sizes 2*1.5 and 4*1.5. Roughly speaking, assuming each cable has a cross-sectional area of 1 square centimeter, the total area is 300 square centimeters; in this case, a tray of size 400*200 would be suitable (with a filling rate of 300/800)
Based on the calculation using the number of cables and their cross-sectional areas you provided, it seems that a 400*200 tray would be sufficient. However, the size of the cable tray depends not only on the number of cables and their cross-sectional area, but also on factors such as the installation environment, cable length, and wiring method. Therefore, it is best to have professionals conduct on-site surveys and evaluations to ensure the appropriate size of cable tray is selected. .
Based on the values of 300/800, the size of this cable tray you choose will definitely be sufficient. According to the standard HG/T-20512-2014 – Design Code for Instrument Piping and Wiring, section 8.3.6 states that the filling factor for cable trays should be between 0.3 and 0.5. You can check the diameter of the cable yourself and use a formula in EXCEL to do the calculation
We calculate the fill rate for the entire length of our cable trays; you can use Excel to do the calculations – it won’t overwhelm you.
I’m in the business of manufacturing cable trays; it’s better to leave the calculations and selection to the design firm – let professionals handle professional tasks: lol
Theoretical calculation of the fill factor is one aspect; other factors to consider include the fact that the actual cross-sectional area of the cable may be larger than that in the samples, the requirement that control cables should not exceed three layers inside trays/cassettes, as well as the actual turning radius at bends. Whenever costs permit, it is advisable to choose a larger size.
What did I say wrong? Yours is also calculated, surely it wasn’t just decided on a whim?