Rigid vs. flexible cable support system

[Power0020]

Selecting the spacing between cable clamps is dedicated by allowable movement space.

BICC Electric Cables Handbook, Chapter 37 describes the calculation procedure.

I wonder, however, in case of well supported system with short supports separation distance, the case looks a bit like directly burying the cable with soil intact around it. No movement is allowed however, the conductor will be subjected to compression and tensile forces. I am not aware of any design standard with referecne to internal cable stresses and I think it is pretty much to do with cable manufacturer.

Do cable manufacturers take into consideration the case of no allowed movement?

 

[7anoter4]

I think it is about BICC Electric Cables Handbook CHAPTER 37 Thermomechanical Design.
It is a very interesting study, indeed-as this entire handbook is. However, I am sure the cable manufacturing standards-see: IEC 60502-1 and 2, or UL44 , UL83 , UL1072 or others [BS, HN, VDE, GOST and other] are taken this in consideration.
In my opinion, the installation standards as NEC, IEC 60364, BS 7671 and other considered this in their installation instructions, also.