Twin and CPC to outhouse

[diditrain]

Hi all, can someone clarify for me if it is acceptable to run a Twin and CPC sheathed cable to an outhouse. There is an existing alcathene duct in situ, which runs under a patio with an existing supply cable already in place.
Job has not commenced but the question has been raised. I have only ever used SWA so have never given it much thought.

Cable clearly does not have an earthed metallic sheath but is well protected against mechanical damage

Many thank`s

 

[nickblake]

Think you answered your question in the last paragraph , answer is no , it should be SWA, PVC is prone to rodent attack , water , uv rays etc

 

[Deleted member 26818]

Yes it is acceptable.
Mechanical protection may be required.
As may protection against UV.

 

[Octopus]

Fantastic, a "no" and a "yes" in the first 2 answers!

 

[dim_bulb]

Why cant you use swa like you usually do?

 

[diditrain]

I can use SWA, for the external part of the run. The question about re-using the existing duct was put to me and i did not know the answer.

 

[telectrix]

IMO if the duct provides adequate mechanical protection for the cable, no rfeason why T/E can't be used. SWA is preferable though for longevity.

 

[Mark_Burgess]

I'd always use SWA, especially after seeing an idiot with a mini digger go through the mains gas supply to one of my neighbours house when digging a trench for drains.

 

[Engineer54]

As Spin has stated, yes it is acceptable, providing there is mechanical protection afforded where required throughout it's length. As for rodent attack, ducts should be sealed at each end after cables have been drawn in. Personally i would prefer to use a SWA cable, when installing a sub-main, especially when part of the cable run passes thru exterior space from the main supply location....

 

[diditrain]

Very good everyone, thank you for taking the time to reply. Much appreciated