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Multi-core SWA cable installation in vertical risers.

Des over 5 years ago

Hi

I have just had a conversation with a contractor who has stipulated that as part of a vertical cable installation it is a requirement to put a kink in the cable every 5-7m. The reason behind this is they say it helps with the distribution of the weight on high vertical risers.

I have never heard of anyone doing this? can someone please advise me if this is now a requirement, or point me in the right direction for clarification, i.e. is it in any of the guidance notes.

Regards

Desmond Young BSc (Hons) (Open) MSc.

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0 John Peckham over 5 years ago

I am not sure I like the idea of putting a "kink" in the cable but long runs of cable should not be run in a perfectly straight line. To allow for thermal expansion under load conditions a gentle "wave" along the run of the cable would be preferable.

My preference is for cleats on anything over 95mm rather than cable ties on vertical runs.
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0 John Peckham over 5 years ago

I am not sure I like the idea of putting a "kink" in the cable but long runs of cable should not be run in a perfectly straight line. To allow for thermal expansion under load conditions a gentle "wave" along the run of the cable would be preferable.

My preference is for cleats on anything over 95mm rather than cable ties on vertical runs.
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