Knowledge base

Can you fit recessed spotlights in a concrete ceiling?
Why concrete has no cavity to recess into, how to check, and which three routes do work. Read more...
How do you wire recessed spotlights?
Why spots go in parallel and not in series, what to do with live, neutral and earth at an existing outlet, and when a driver still has to go in... Read more...
What is a G9 lamp?
How to recognize a G9 by its two loops, why it belongs in wall lights, and why heat is the thing to watch here. Read more...
What is a lighting plan and how do you make one?
What belongs on a lighting plan and how to make one in six steps, from furniture to color temperature per zone. Read more...
How many watts does an LED spot need?
Why watts says nothing about light output since LED, and the three calculations where you do need the number. Read more...
What is an MR16 fitting?
Where the MR16 designation comes from, how MR11 relates to it, and when 12 volts is still the right call. Read more...
What is Dim2Warm?
Why an incandescent bulb goes orange by itself and an LED does not, how Dim2Warm imitates that, and when it is worth paying for. Read more...
How many spotlights do you need in a bathroom?
The sum per square metre, why a spot above the mirror actually casts shadow, and which IP rating is allowed where. Read more...
What is a surface-mounted spotlight?
Why a surface-mounted spot is the way out with concrete, beams and rented homes, and what to check first about the outlet, the spacing and the drop. Read more...
Can you use a dimmable LED lamp without a dimmer?
Why dimmable on a switch is no problem, non-dimmable on a dimmer is, and which function you miss without a dimmer. Read more...
How far apart should ceiling spots be?
The rule of thumb for spacing and distance to the wall, and why symmetry counts for more than the exact measurement. Read more...
What is the difference between Kelvin and lumens?
Two numbers that get confused, set side by side in a table, plus the order in which you choose them. Read more...