i think if you keep each sting of leds bellow 42v i think they are
its also prob why you dont see one massive board with 5000+ leds on , im just wondering if you make a light complete if you need it for the light as well or just the components inside
If all the components conform you are ok
No even if all components are CE once you have created a new part composed of the CE parts, it has to be re-certified.
i think some of these companies do it in house as when i worked for a huge electrical comp there were people in house that had the qualifications to issue certs as it does not make commercial sense to send everything off for testing
they have a cert that means that everything they make meets the standards and so they can put the marking on there products , i will send a few emails though and do a bit of research into this
You can't have a factory be CE certified for electrical components. The component can be CE certified and then you can mass produce that exact same component and they will all be certified.
CE can be done by you but you better make sure that every thing complies with the directives and you have a valid technical document. If someone where to injure themselves and it is because something is not to standard you'd be in some serious shit. The reason I have been skeptical of boards is if you don't have a protective lens it is easy to get zapped, Working in the grow room and bump the light with elbow or some one not the brightest raising light by placing hand on LES of boards etc. Most people don't give a shit but it just takes that one person to raise a lawsuit.
Here are the main directives for a class I Luminair
LVD
EN60598-1
Luminaires part 1: general requirments and tests
EN60598-2-4
Part 2: particular requirements - section 4: portable general purpose luminaires
EN62493
Electro Magnetic Fields Safety – Lighting Equipment
EMC
EN55015
EMC Emissions
EN61547
EMC Immunity
EN61000-3-2
EMC Limits for harmonic current emissions
EN61000-3-3
EMC Limits for voltage fluctuations and flicker
RoHS
EN50581
Assessment of products with respect RoHS
You have no idea how long it took me to find the above applicable directives.
To give you an idea of how lengthy these directives are,
HERE is link to just to EN60598-1.