Is this twisted cloth flex double or single insulated?

[Selfmade]

Hi Folks

Just bought some of this Bronze Twisted Fabric Flex - Braided Cloth Cable Lighting Wire - https://www.industville.co.uk/products/light-brown-twisted-fabric-flex-braided-cloth-cable-lighting-wire?variant=1184660808&gclid=EAIaIQobChMI14zguOzl3wIVRbDtCh2C9QQCEAkYASABEgJA0fD_BwE for a job. The description says double insulated but the BS EN number quoted is for single. I've received it and there is one layer of plastic (presumably PVC) insulation and the woven sheath. Does the sheath provide the double insulation as the seller seems to imply? I'm a little bit dubious.

 

[Selfmade]

Does anyone know which BS (EN) standard is applicable to such a cable (for use as part of a chandelier with chain to bear weight)? I've been looking at the titles for the BS EN 50525 series and think this one may be right: BS EN 50525-2-82:2011 Electric cables. Low voltage energy cables of rated voltages up to and including 450/750 V (U0/U). Cables for general applications. Cables with crosslinked elastomeric insulation for decorative chains. Any thoughts?

 

[Selfmade]

Duplicate post, sorry!

 

[Selfmade]

Considering this Twisted Cable | Braided Lighting Cable & Flex | Factorylux - https://www.urbancottageindustries.com/twisted-fabric-lighting-cable-3-core# one, as it states it has 'double PVC' insulation. BS EN 60598 'when used for light fittings'. Or this fabric cables - lighting cable - braided cable - twisted cable - Vintage Lights Ltd - https://www.vintagelights.co.uk/26-fabric-cable one with 'an internal double insulated flex' and is to BS EN 50525-2-11 which does refer to 'sheathed cables' here BS EN 50525-2-11:2011 - Electric cables. Low voltage energy cables of rated voltages up to and including 450/750V (U0/U). Cables for general applications. Flexible cables with thermoplastic PVC insulation - https://shop.bsigroup.com/ProductDetail/?pid=000000000030188772, though it's not clear to me if it is only applicable to sheathed cables. Any thoughts on either of these?

 

[John-]

Silly question. Why does it need to be 'double insulated' for your application?

 

[Selfmade]

Silly question. Why does it need to be 'double insulated' for your application?

It needs to be sheathed as it will not be in a conduit or similar. I take that to mean the sheath has to be able to act as insulation if the inner insulation fails. I have bought some of the cable Vintage Lights as linked above. Each core has two distinct layers of PVC (or similar, I haven't chemically analyzed it!) insulation within the braided outer sheath. It's product code is TM05 that lots of others sell, whereas Industville's is FL-T-BZ which no other supplier seems to think is a cable. Draw your own conclusions.

 

[DPG]

And there's your answer - it needs to be insulated and sheathed.

 

[Selfmade]

And there's your answer - it needs to be insulated and sheathed.

Exactly, and Industville's is neither - the BS EN they keep quoting is for single insulated, unsheathed cable.