SWA, T&E or tails??

[Midwest]

wrong reg states not readily combustable so unless you coat the plastic in parafin it complies

Thats what the regs state, but I haven't seen any manufacturer going with anything other than metal. Unless you know different?

 

[Risteard]

wrong reg states not readily combustable so unless you coat the plastic in parafin it complies

No it doesn't. It states "non-combustible" - the "or not readily combustible" part in the Draft for Public Comment never appeared in the Standard.

 

[Risteard]

i cant remember manufacturer but at least one are saying there plastic boards comply with amd3

All the evidence suggests that their claim is false, however.

 

[shanky887614]

how so the un standard for non readily combustible is a lower temp than the old glow wire test

 

[Risteard]

how so the un standard for non readily combustible is a lower temp than the old glow wire test

But not readily combustible is NOT what the Requirement is - "non-combustible" is.

 

[Octopus]

But not readily combustible is NOT what the Requirement is - "non-combustible" is.

What they should had specified in BS 7671 is "metal"

Pratts!

 

[shanky887614]

What they should had specified in BS 7671 is "metal"

Pratts!

metal can be set on fire though

 

[Octopus]

metal can be set on fire though

Hum. Ok they should have specified the materials that are compliant!

 

[Midwest]

metal can be set on fire though

Wire wool, lithium in water. But most manufacturers are using mild steel.

 

[Risteard]

metal can be set on fire though

Everything can given sufficient heat!

 

[Midwest]

Everything can given sufficient heat!

I'm not a scientist, but I think that when metal is heated to a sufficient temperature it changes from a solid state to a molten state. If it's heated to a higher temperature it may actually boil and turn into a gas. To catch fire, is a state of combustion. If metal can be combustible, then it's not gonna be much use as a material for 421.1.201.

 

[shanky887614]

Everything can given sufficient heat!

exactly and certain types of plastic easily pass the new regs.

the british standard on the definition of non combustable materials can easily be met

 

[Risteard]

the british standard on the definition of non combustable materials can easily be met

But you must remember that "non-combustible" and "not readily combustible" are not synonymous.

 

[ImpededLoop]

I've used a few of these to supply submains etc & I agree top value and a decent quality unit,but I've been thinking...what about amendment 3? they don't comply eh?

I would say that they do comply when installed in an external meter cabinet as long as there's a fireproof wall between the cabinet and the inside of the property.

 

[shanky887614]

But you must remember that "non-combustible" and "not readily combustible" are not synonymous.

i cant remember the correct wording and my regs book is on the shelf and when i posted that i was 80miles away from it

 

[Guest77]

T&E only goes up to 16mm with a 6mm cpc.

Eye, years ago though they did make it to 25mm2.