Calculate Cable Trunking Size
January 5, 2016 14 Comments
Example: Calculate PVC Trunking size for following Power Cables running through Trunking .Consider 10% as Future expansion
- 30 No’s of 1.5 Sq.mm Stranded Cables
- 50 No’s of 2.5 Sq.mm Stranded Cables
- 20 No’s of 4 Sq.mm Stranded Cables
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Cable Factor for Trunking as per IEEE |
||
| Type of Cable | Size of Cable | Factor |
| Solid | 1.5 | 7.1 |
| Solid | 2.5 | 10.2 |
| Stranded | 1.5 | 8.1 |
| Stranded | 2.5 | 11.4 |
| Stranded | 4 | 15.2 |
| Stranded | 6 | 22.9 |
| Stranded | 10 | 36.3 |
| Stranded | 16 | 50.3 |
| Stranded | 25 | 75.4 |
| Stranded | 35 | 95 |
| Stranded | 50 | 132.7 |
| Stranded | 70 | 176.7 |
| Stranded | 95 | 227 |
| Stranded | 120 | 284 |
| Stranded | 150 | 346 |
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Trunking Factor As per IEEE |
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| Trunking Size (mm) | Factor |
| 75 X 25 | 738 |
| 50 X 37.5 | 767 |
| 100 X 50 | 993 |
| 50 x 50 | 1037 |
| 75 X 37.5 | 1146 |
| 100 X 37.5 | 1542 |
| 75 X 50 | 1555 |
| 100 X 50 | 2091 |
| 75 X 75 | 2371 |
| 150 X 50 | 3161 |
| 100 X 75 | 3189 |
| 100 X 100 | 4252 |
| 150 X 75 | 4787 |
| 150 X 100 | 6414 |
| 150 X 150 | 9575 |
Calculations:
- As per Table Cable Factor for 1.5 Sq.mm Stranded Cable=8.1
- As per Table Cable Factor for 2.5 Sq.mm Stranded Cable=11.4
- As per Table Cable Factor for 2.5 Sq.mm Stranded Cable=22.9
- Total Cable Factor= No of Cables X Cable Factor
- Total Cable Factor=(30X8.1)+(50X11.4)+(20X22.9)
- Total Cable Factor=1271
- Total Cable Factor After 10% Future Expansion=1271+127 =1398
- As per Table Suitable Size for PVC Trunking for Cable Factor 1398 is 100 X 37.5
Suitable PVC Trunking is 100 X 37.5 mm
JIGNESH PARMAR
Nixe and use full sir thanx
22.9 factor is for 6Sq.mm….we dont have 6Sq.mm in our calculation.20No’s is for 4Sq.mm so factor will be 15.2..please let me know the calculation again
22.9 factor is for 6Sq.mm wire…in our calculation we used 4Sq.mm wires but factor for 4Sq.mm is 15.2 ..plaese clarify
Respected Sir,
good afternoon,
sir i want to know that how much distance is required between wall and industrial indoor panel ? is distance depend on voltage ? if yes, any standard formula or any Indian standard available for the same?
i am waiting for your green and golden replay.
Thanks & have a safe day, Monik Sapariya (M) +919662336159
Minimum 600mm distance is required in b/w panel and wall
correction factor means ?how to find it?
I CAN CONSIDER IN MY CALCULATION THE SAME FACTOR FOR BOTH MULTI& SINGLE CORE CABLES
Dear Mr.Jignesh.Parmar
May i know that i saw ur mcb/elcb size calculation there first branch load calculation how became 0.73A .i was try that but i have 0.71A . could u explain that.
Thanks
by
Bala
Dear Sir,
pls tell , how calculate wire factor for cat6 cable?
Do you have an answer now?
Dear Sir,
Can you able to tell the IEEE standard number used here
Mr.Jignes can you please share with us also Cable trunk capacity calculation_?
We have use the below app as well.
https://play.google.com/store/apps/details?id=com.vtd.electrical.trunkingsizer
Please have a look and share your thoughts.
for app trunk size calculator you can get it form here https://play.google.com/store/apps/details?id=com.milhem2.wireandcabletrunksizer