Our Voltimum Experts answer your questions on a daily basis in our Technical Expertise area. This Question of the Day, about 3 X 70mm SWA cable through 80m of 100mm ducting, is answered by Prysmian:
|
| Ensure an even cable pull... |
|
Question: We have to pull a 3 X 70mm SWA cable through 80m of 100mm ducting. There will be a bend at each end up to the electrical switch room. The cable run between is more or less straight. Can you tell me what a reasonable bend radius would be to allow satisfactory pulling of the cable?
Answer: Our recommended installation minimum bend radius for SWA cable with shaped cores is eight times the overall cable diameter. So, for your cable, this is 8 X 34 = 270 mm. This is acceptable for a 600/1000V cable. For higher voltages the recommendation is 12 X the OD. If you can go for a bigger bend, obviously this is always better.
Also take care...ensure that the pull is even etc. This is referred to in the Wiring Regulations, and also in the cable standard.
You can find this, and other information, on the data sheets on our website: www.prysmian.co.uk
To see many more Q & A in Voltimum UK's Experts Area, please click on the link: www.voltimum.co.uk/consult.php?universe=consult.index.questions
|
BookmarkThis
Back