25mm split con sub main eicr code?

[DPG]

It has an earthed sheath.

Mmm, not convinced.

 

[westward10]

At one time split concentric was deemed suitable for being in a wall without additional rcd protection but was removed in the one of the amendments to the 16th Ed.

 

[Ian1981]

At one time split concentric was deemed suitable for being in a wall without additional rcd protection but was removed in the one of the amendments to the 16th Ed.

So was twin and earth

 

[westward10]

So was twin and earth

Never realised that, not heard that.

 

[Ian1981]

Never realised that, not heard that.

Always willing to pass on my knowledge to those who need it

 

[Deleted member 26818]

At one time split concentric was deemed suitable for being in a wall without additional rcd protection but was removed in the one of the amendments to the 16th Ed.

The requirement to provide RCD protection for cables concealed in walls, was introduced in the 17th.
So nothing was removed in the 16th.

 

[Deleted member 26818]

Not fully encasing the cable it doesn’t.
This will not comply with 522.6.204 indent (i )
Split con does not incorporate an earthed metallic covering which actually covers the entire cable

The split concentric I’ve used does.
One half is neutral, the other half earth.
No gaps.

 

[westward10]

The requirement to provide RCD protection for cables concealed in walls, was introduced in the 17th.
So nothing was removed in the 16th.

Quite correct error on my part. Nevertheless concentric was but no longer is suitable no matter it's construction.

 

[Deleted member 26818]

Quite correct error on my part. Nevertheless concentric was but no longer is suitable no matter it's construction.

No longer suitable for use in a domestic installation, or no longer suitable for use without RCD protection?

 

[westward10]

In line with the thread topic, additional rcd protection.

 

[Deleted member 26818]

Probably doesn’t comply, because the standards for con and split con are different to those for SWA.

Have heard in the past, that con and split con are prohibited by ESQCR for use in consumer’s installations.
Not sure if that is the case though.

 

[davesparks]

The split concentric I’ve used does.
One half is neutral, the other half earth.
No gaps.

Exactly, the live conductors are not fully surrounded by earthed metal, neutral conductors are classed as live conductors.

Also split con isn't normally half and half, it's normally at least 2 thirds neutral.

 

[Deleted member 26818]

Exactly, the live conductors are not fully surrounded by earthed metal, neutral conductors are classed as live conductors.

Also split con isn't normally half and half, it's normally at least 2 thirds neutral.

In the UK, the neutral is generally earthed at source, which is why ESQCR allows split con to be buried in the ground.

 

[Ian1981]

In the UK, the neutral is generally earthed at source, which is why ESQCR allows split con to be buried in the ground.

As the regulation I posted states, it has to have an earthed metallic covering that completely encases the conductors, split con does not therefore unacceptable to be used for the purpose of burying in the wall without rcd protection , mechanical protection etc

 

[davesparks]

In the UK, the neutral is generally earthed at source, which is why ESQCR allows split con to be buried in the ground.

Yes, I'm aware it is allowed under ESQCR, and for all practical purposes it will be no different to SWA. However it doesn't satisfy the requirements of bs7671 as far as I know.