Knowledge base

Wat is Ra of CRI bij led-verlichting?
What is Ra or CRI in LED lighting?
What the Ra figure measures, the gap in the measurement, and which rooms you want above Ra 90 in. Read more...
Wat betekent het energielabel op een led-lamp?
What does the energy label on an LED lamp mean?
Why a perfectly good LED spot now sits at F or G, and what the label does and does not say about the lamp. Read more...
Waarom flikkert led-licht op camera?
Why does LED light flicker on camera?
Why an LED that looks fine still produces banding in photos and video, and what you can do about it. Read more...
Wat betekent UGR bij een led-paneel?
What does UGR mean on an LED panel?
What the UGR figure says about glare, what EN 12464-1 requires, and why a louvre panel works out differently from a back-lit one. Read more...
Wat kost led-verlichting aan stroom per jaar?
What does LED lighting cost in electricity per year?
What an LED spot costs per year in electricity, how that compares with halogen, and where the biggest saving sits. Read more...
Hoeveel led-spots kun je op één driver aansluiten?
How many LED spotlights can you put on one driver?
How to work out how many spots fit on a driver, why there is also a minimum load, and when cable length starts working against you. Read more...
Mag een IP44-lamp buiten hangen?
Can an IP44 light be used outdoors?
When IP44 is enough outdoors, where the line with IP65 sits, and which risks are not covered by the IP code at all. Read more...
Kun je een tl-buis vervangen door een led-buis?
Can you replace a fluorescent tube with an LED tube?
Why the ordinary fluorescent tube left the market, which three types of LED tube exist, and what converting a fixture means legally. Read more...
Kun je een geïntegreerde led vervangen?
Can you replace an integrated LED?
Why an integrated LED is not separately replaceable, why that matters less than it sounds, and what to check first. Read more...
Kantelbare of vaste spots: wat kies je?
Tiltable or fixed spotlights: which do you choose?
When tilting genuinely adds something, when fixed is better, and what tiltable does not solve. Read more...
Hoeveel afstand moet er tussen een spot en de muur zitten?
How far should a spotlight be from the wall?
Why the distance to the wall decides something different from the spacing between spots, and which measurement suits which purpose. Read more...
Hoeveel inbouwdiepte heb je nodig voor een inbouwspot?
How much recess depth do you need for a recessed spotlight?
The difference between cut-out size and recess depth, the three measurements to take first, and what is left when the space is too tight. Read more...