Not Seen This Before

[securespark]

Usually, light fittings have their Class designated by the manufacturer.

If they are Class II, surely there should be no earth connection?

These are Integral Evo Fire Rated downlighters.

 

[sparkwright]

Can't think why a Class 2 would need an optional earth earth wire like that...

 

[Jurassicspark]

My guess would be that the maker of this product is able to test and certify them as Class II products but they don't feel confident that the item will remain as a class 2. It could be modified in the future or depends on how is it installed.

 

[sparkwright]

My guess would be that the maker of this product is able to test and certify them as Class II products but they don't feel confident that the item will remain as a class 2. It could be modified in the future or depends on how is it installed.

Yes, that's all I could come up with, but still didn't seem a good enough reason.

Thing is - I probably would fit the earth lead, even though it's apparently not needed whatsoever.

 

[Harry Bloomfield]

Simply including the earth wire, surely makes it no longer a class II ?

 

[EFLImpudence]

It's not an earth wire until connected to earth.

 

[sparkwright]

On some light fittings, this would be a good idea - notably when you have a metal Class 2 fitting and it comes with one of those bloody awkward cases around the connector block.

But it's not sort of light fitting, because the flex separates the light from the connector, and since it's a downlight the connections aren't ever going to be directly near the downlight itself.

 

[securespark]

It's not an earth wire until connected to earth.

That's the odd thing.

Most fittings (even Class II) have an earth terminal so you can ensure continuity round the circuit.

But in this case, once you've parked your CPCs, they are connected to the fitting body, thus making it Class I.

 

[EFLImpudence]

But you should not - they say must not - earth Class 2 items.

 

[securespark]

So, given the label on the box and the fact that when you use the provided enclosed terminal block it earth's the (Class II) fitting, what would you do?

 

[Jurassicspark]

I'd leave the earth unconnected IMO.
Where was this brought from?

 

[EFLImpudence]

So, given the label on the box and the fact that when you use the provided enclosed terminal block it earth's the (Class II) fitting, what would you do?

It needs examining.

Are there any exposed-conductive-parts? What could you do if it is all plastic?

 

[securespark]

Well, the body is metallic.
Are there any exposed-conductive-parts?

Well, there shouldn't be if it is Class II!

 

[JohnW2]

Are there any exposed-conductive-parts? What could you do if it is all plastic?

That's the question I've been asking, here and elsewhere, for years - without ever really getting much of an answer - particularly when the non-metallic bits are seemingly neither 'double' nor 'reinforced.

As I always ask, if there is no metal (hence can't be Class I, but is in a non-metallic case which is neither ';double'; nor (whatever this means) 'reinforced' - then "what is it" - not allowed or what?

I have a good few things with no external metal parts which bear Class II markings.

 

[JohnW2]

But you should not - they say must not - earth Class 2 items.

That's what manufacturers often say, but I'm not sure that there is any basis in regulations. Bs7671 merely says/implies that a Class II item does not require earthed exposed-c-ps to protect against electric shock - it does not say that such is 'not allowed'..

We often discuss the fact that to 'unnecessarily earth' something theoretically creates an 'unnecessary hazard', but I don't think the regs (certainly not BS7671) say anything about that. Beyond that, if a Class II item has touchable metal parts (which don't need to be earthed because it is Class II), then to earth them could be regarded as simply being 'additional protection against electric shock' (even though, as per my previous sentence, that is partially balanced/negated by a small increase in risk due to it being 'unnecessarily earthed'.