Earthing Swa one end

[jstephens251]

Hi all

Just wondering why a lot of people on here say you should only earth swa at one end. If this happens what happens to the other end which isn't earthed? Is the armoring connected to gland then left doing nothing with 3rd core of cable providing earth. I thought the idea to the armouring was for it to be earthed sorry if its a daft question! reason i ask aswell is that i have an swa termination to do soon on a tncs supply so want to get right

cheers

 

[eddielarge]

Hi all

Just wondering why a lot of people on here say you should only earth swa at one end. If this happens what happens to the other end which isn't earthed? Is the armoring connected to gland then left doing nothing with 3rd core of cable providing earth. I thought the idea to the armouring was for it to be earthed sorry if its a daft question! reason i ask aswell is that i have an swa termination to do soon on a tncs supply so want to get right

cheers

Hi. I've not read the post about terminating one end. It might be that they are going to put an earth rod in. And then it is recommended to disconnect the earth to the house so as to avoid the fault being diverted along the armoured back into the house. And forcing it down to earth via the rod.

 

[jstephens251]

Hi. I've not read the post about terminating one end. It might be that they are going to put an earth rod in. And then it is recommended to disconnect the earth to the house so as to avoid the fault being diverted along the armoured back into the house. And forcing it down to earth via the rod.

whats your methods when running swa from consumer unit to metal consumer unit in garage, earth both ends?

 

[vitoboy]

if its earthed at one end then its earthed along its length.!
its just earthing the armour the cpc is earthing the item ur supplying.

 

[jstephens251]

if its earthed at one end then its earthed along its length.!
its just earthing the armour the cpc is earthing the item ur supplying.

ahh so it is a daft question then! lol . so does it matter if i earthed both ends for neatness? what would you do?

thanks

 

[ukpablo]

you can do, but not really required, i usually earth the end nearest the supply on the armour of swa, but no said written rule.