terminating tt tails

[nicademus]

Hello what is the (proper) way to terminate SWA tails into amendment 3 metal consumer unit, & its s type time delay protection at meter cabinet on a TT system. Fair size new build so C.U is about 12 mtrs from cabinet. (Excuse if I've left any details out.).

 

[davesparks]

SWA gland

 

[nicademus]

Hello what is the (proper) way to terminate SWA tails into amendment 3 metal consumer unit, & its s type time delay protection at meter cabinet on a TT system. Fair size new build so C.U is about 12 mtrs from cabinet. (Excuse if I've left any details out.).

Hi thanks for the quick reply Dave sparks, should have said the SWA tails will be going into the back of CU. And of course
The termination query refers to mainly the earthing of the wired armour earth, is it Right to earth enclosure on a TT? Many thanks and sorry for ineptness of original post.

 

[Octopus]

Hi thanks for the quick reply Dave sparks, should have said the SWA tails will be going into the back of CU. And of course
The termination query refers to mainly the earthing of the wired armour earth, is it Right to earth enclosure on a TT? Many thanks and sorry for ineptness of original post.

Not sure how you are going to avoid that using an AMD3 compliant enclosure!

 

[telectrix]

Hi thanks for the quick reply Dave sparks, should have said the SWA tails will be going into the back of CU. And of course
The termination query refers to mainly the earthing of the wired armour earth, is it Right to earth enclosure on a TT? Many thanks and sorry for ineptness of original post.

SWA must be glanded into the top or bottom of the metal CU.

 

[gnselectricals]

SWA must be glanded into the top or bottom of the metal CU.

Can't go side entry then [emoji23]or flush mount galv box and tap an Earth on

 

[telectrix]

can do, but an extra box stuck on the wall may be unacceptable to fussy knickers customer.

 

[gnselectricals]

I meant if swa in stud wall etc gland into box set in wall and mount db on top to cover

 

[Octopus]

I meant if swa in stud wall etc gland into box set in wall and mount db on top to cover

hum.... is that accessible?

 

[gnselectricals]

hum.... is that accessible?

Accessible for gland connections I assume you mean ? Usually use 3 core - lne and a flying lead for armourings no connections in box just inner sheath into db with fly lead

 

[telectrix]

Accessible for gland connections I assume you mean ? Usually use 3 core - lne and a flying lead for armourings no connections in box just inner sheath into db with fly lead

rather have gland where it's accessible for routine maintenance ( check tightness etc.) . you beginning to sound like a customer ( want it to work, but don't want to see it ). :tounge_smile:

 

[Octopus]

rather have gland where it's accessible for routine maintenance ( check tightness etc.) . you beginning to sound like a customer ( want it to work, but don't want to see it, we want it as cheap as possible ). :tounge_smile:

Corrected that for you!

 

[telectrix]

had one like that the other week. when they said as cheap as possible, i offered to get them some scrap cable and some second hand sockets with a bit of paint on. that shut them up.

 

[davesparks]

Hi thanks for the quick reply Dave sparks, should have said the SWA tails will be going into the back of CU. And of course
The termination query refers to mainly the earthing of the wired armour earth, is it Right to earth enclosure on a TT? Many thanks and sorry for ineptness of original post.

The answer is still SWA gland whatever direction it comes from.

As for the question about earthing the enclosure, that is quite frankly a very scary question indeed as the earthing of metal enclosures is one of the most basic safety provisions

 

[nicademus]

The answer is still SWA gland whatever direction it comes from.

As for the question about earthing the enclosure, that is quite frankly a very scary question indeed as the earthing of metal enclosures is one of the most basic safety provisions

Hi davesparks, understand that earthing a metal enclosure is basic provision but with regards to CU and TT set up and the new 3rd amd not quite so convinced, other contributors suggestion more helpful.

 

[shanky887614]

piranha nut or you can use a fuseboard backbox.

wylex make a backbox so you can gland your swa into that and mount the board over it.

 

[davesparks]

Hi davesparks, understand that earthing a metal enclosure is basic provision but with regards to CU and TT set up and the new 3rd amd not quite so convinced, other contributors suggestion more helpful.

The metal enclosure and the armour still must be earthed on a TT system.

 

[shanky887614]

The metal enclosure and the armour still must be earthed on a TT system.

i would only supply end though and not with an rcd. (if its spn and 3c swa)

 

[davesparks]

i would only supply end though and not with an rcd. (if its spn and 3c swa)

RCD is irrelevant, the enclosure and the armour need to be earthed