PVC cables buried direct

[FRPB84]

Hi All

I was having a discussion with my colleague regarding burying a swa directly along with a pvc earth cable.
As the earth is not an armoured does this need to be ducted for mechanical protection and if so is there a regulation in the BS 7681 for it?

 

[bill01803]

Yes 16mm 6491X or bare 25mm

 

[Midwest]

I didn't like buying any cable directly in the ground/soil including swa. Always preferred to put it in some ducting.

 

[Pretty Mouth]

543.1.1 refers you to 542.3.1, and the minimum CSAs in table 54.1

 

[MJPD29]

Agree with Midwest, although swa is suitable I never liked burying it either, would always opt for a duct.

 

[Dustydazzler]

As above 16mm can be buried without additional protection

Silly reg thou as if 10mm needs protection from a fork or spade surely 16mm does as well

 

[FRPB84]

Yes I’m definitely not a fan of burying any cable directly myself as it is never sanded or dusted the way it should to protect against sharp stones although the consultant has specified it this way. I know swa can be buried directly but I am unsure of the regulation for non armoured cables buried directly. Need regulation to let the consultant know.

 

[DPG]

Yes I’m definitely not a fan of burying any cable directly myself as it is never sanded or dusted the way it should to protect against sharp stones although the consultant has specified it this way. I know swa can be buried directly but I am unsure of the regulation for non armoured cables buried directly. Need regulation to let the consultant know.

P198 and 199 of the BBB (brown)