SAAPI
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- Boston, Massachusetts
Does a permanently connected class II device need to be listed to a UL standard ?
Does a permanently connected class II device need to be listed to a UL standard ?
Is the transformer actually listed or is it just a Recognized Component?
I have a competitor that is trying to not list their product under UL/NTL standards - they put a UL listed class 2 transformer in front - and say it's listed - or tell the electrical inspector it's safe.
Not a chance I can get away with this in the EU - I'm required to get a CE listing at 10-30K.
they are just using a standard plug in transformer - I assume it's listed.
As best I can tell, in general, only the power source for a class 2 circuit is required to be listed. There are some systems that are listed as such that have class 2 power sources. I think low voltage lighting is like that. But luminaires have to be listed anyway.
There is no such thing as a CE listing. It is a declaration either by the manufacturer or by a 3rd party on the manufacturer's behalf.
In the US, there is no general requirement that anything be listed. Having said that, there are some things the electrical code requires be listed. If the device in question is not one of those things it is not required to be listed by the code.
Your competitor might well be acting appropriately in what they are doing. Without knowing a lot more about the specifics it is not possible to say with any certainty.
If you are talking about UL508a, all of what they are doing is specially allowed by UL508a.The CE declaration requires 30-50K of cost for a US company with a NTL - while in the EU - they just slap the sticker on - this is a bit of a free trade issue.
Not so sure they are acting appropriately - they are controlling equipment that is listed to a UL general manufacturer listing - aka Industrial control. The use of the transformer may be appropriate - but I'm sure their general listing does not allow unrecognized devices to be used in a cabinet - without approval. Actually - they are not even using their own UL industrial control listing - they use another firm listing - and then put their name on the equipment.
44.2.1 Components and internal wiring located entirely within a Class 2 circuit are not required to be
investigated.