As you say other than kitchen nothing unusual the problem is of course it requires multi MCB or fuses. Since most ceiling roses are used as junction boxes and are only rated at 6A even though you are allowed 16A for lighting in most houses there is something which limits one to 6A.
My kitchen is also then biggest lighting power user with 3 x 68W fluorescents one double and one single it is about the only room that has not been changed likely as it was the best room for lights to start with.
If a 55W fluorescent = 150 tungsten then my kitchen would require 556W of tungsten lighting and the design means every time we use the room the lights are used.
Oddly it is only the kitchen where moving to non heat producing lights makes sense in every other room we for most of the times lights are used actually use the heat they produce and moving from tungsten to LED only means the central heating has to work harder. If electric heating is used then using so called energy saving bulbs does not save energy as the radiated heat from tungsten bulbs means the room feels warmer at night so we set central heating lower in the day.
But in my kitchen I have swapped the cooker to keep the kitchen cooler. Better insulation on the oven and induction hobs mean it puts far less heat into the room. To spend £1000 on a cooker to keep the room cooler and not change the lights is clearly daft. I should do something to use less energy on lighting simply to keep the room cool.
I have been however surprised at lights
the picture shows some fluorescent lamps the second one down I use in my office. Rated at 11W the lumen output compares with LED lighting and far cheaper.
This image
shows an electronic ballast rather small but it uses high frequency and most include some form of regulation so the same fitting with a HF ballast can use less power and produce more light plus the tubes last longer than with a wire wound ballast.
So when we see comparison charts LED, fluorescent, tungsten they need to state if HF or wire wound ballast is used. Also the single folded tube is far better then multi-folded or coiled tube so again it has to state type of tube. Even the coatings on the tubes vary so 100 W tungsten = 23 - 30 W fluorescent is not really valid it's more like 15 - 40 W which is rather a huge variation.
LED is no better. There are three things when using an LED. First is the output of the LED, second is how it complements other LED's in the cluster as with folded fluorescent having the light emitting parts so close can mean you don't get the full output from each LED in the cluster. And third is the method of current control used.
When we use an LED we need to control the current this can be a simple resistor or a complex switch mode power supply so a 3W LED may give out 360 lumen or 210 lumen one has to be so careful selecting.
Most LED lamps are directional in some way. The old tungsten bulb had a fitting which clearly would cast a shadow but far less than any LED bulb. As a result it does matter what the light is reflected from. My living room the lights shine mainly onto the white ceiling so with 10 bulbs there is very little shadow and a good overall light. My son has GU10 LED's 6W each in a very small kitchen 7 of them so half again the power for my living room yet I needed a touch to read the display on the boiler which is in the kitchen. Reason is simple they point at a dark floor rather than a white ceiling so no light reflected. If he had used the type which can be moved and aimed them at the wall then they would work far better.
I have 2W and 3W GU10 in bed side lamps the 2W gives even light throughout the spread the 3W give more light to the centre. So even reading the angle of spread does not always work. 2W stated 30° the old 35W tungsten was 60° one has to be so careful. As a reading lamp 30° is better but fit these in a ceiling pointing down and it would look like a planetarium.
So I think when I do my kitchen it will likely be HF 2D fittings and under counter lighting may be LED but not the ceiling lights. But by time I do it there may be another option.
