ᐅ Inserting a stainless steel corrugated pipe into a cable protection conduit?

Hello,

I would like to run a thicker power cable through a stainless steel flexible conduit (as shielding—there is no halogen-free cable available in this thickness with shielding). I don’t see a problem with that so far, but what about pulling this stainless steel flexible conduit DN32 through a protective cable conduit DN75 with 3 moderate bends (about 90° within 1 meter (3 feet)) over a distance of 20 meters (66 feet)? Could that work? Has anyone tried this before?

Ordering stainless steel flexible conduit by the meter has the disadvantage that it cannot be returned. Therefore, I would appreciate any evaluation or experience reports.

Best regards

MiaBaun

That should not be a problem. First, I would get a drain snake. A 30m (100 ft) one costs around €10-20. Use it initially to test whether the pipe is actually functioning. Afterwards, use the snake as a pull wire. One person pulls while another wiggles the stainless steel flexible conduit to avoid any snags.

Thank you very much for the assessment. That is exactly how I had planned it, although the test of the pipe can be omitted since the conduit is already being used by a transition cable (just without the stainless steel flexible conduit, but with a fairly large diameter).

Update: The DN32 pipe is ordered, and I hope it works – I will report back once the electrician has time, which isn’t necessary right away but could take a while.
Some suppliers appear to be accommodating and may accept returns on cut pieces for certain lengths.
I hope I won’t have to rely on that.

I have now ordered a DN25 "FLEXIBLE" alternative and compared it. The power cable still fits through it with just enough space, and it is definitely the better option. So, if anyone else has a similar idea, make sure to pay attention to the "flexible" type (smaller corrugation pitch) or specifically ask the supplier about it. The conduit is slightly more expensive and is rarely stocked or offered.

Which cable should be installed and for what purpose? NYM 5x10 or something else?