To make the house more Beautiful and lighting as per Indian Electricity Standard need to follow
Area | Lux | Colour |
Hall | 250+ | 3 in1 / RGBWW |
Kitchen | 300+ | CW (6500K) |
Dining | 90+ | NW (4500K), WW (3500K) |
Master Bedroom | 250+ | CW (6500K), NW(4500K),WW(3500K) |
Children Bedroom | 220+ | CW (6500K), NW(4500K),WW(3500K) |
Guest Bedroom | 200+ | CW (6500K), NW(4500K),WW(3500K) |
Pooja Room | 150+ | WW (3500K) |
Balcony | 100+ | WW (3500K) |
Corridor / Hallways | 200+ | WW (3500K) |
Stair Case | 200+ | WW (3500K) |
Study / Office Room | 350+ | CW (6500K) |
Living Room | 250+ | 3 in 1 / RGBWW |
Lux calculation formula :
Lux=Lumens/Area in square metres
No of lights Requireds:
Step 1: Calculate Total Luminous Flux Needed
Total Lumens Needed=Room Area (in square metres)×Required Lux Level
Step 2: Determine the Lumen Output of the Chosen Light Fixture
Look at the lumen rating of the light fixture you’re planning to use.
Step 3: Calculate the Number of Lights Needed
Now, you can calculate the number of lights required using this formula:
Number of Lights=Total Lumens Needed/Lumens per Light Fixture.
We need add utilisation factor(UF) 0.6 and lighting factor(LF) 0.7 for lumens
Step 4: Practically no of lights required is
Total number of lights required = number of lights /UF*LF
Example Calculation :-
Hall Size: 20 square metres (e.g., a living room)
Lux Level Required: 250 lux (for general living room lighting)
Total Lumens Needed:
Total Lumens=20 ×250 =5000 lumens
Lumens per Light Fixture:
Let’s assume you’re using a light slim light 15w with 1500 lumens (min)
Number of Lights:
Number of Lights=5000 lumens/1500 lumens =4
So, for a 20 square metre room requiring 200 lux, and using light bulbs that emit 800 lumens each, you would need 5 lights.
5 . total number of lights for hall :-
Total number of lights= 4/0.6*0.7 = 10 NO
General office: 500 Lux
Filing/copying/printing: 300 Lux
Technical drawing area: 750 Lux
Conference room: 500 Lux
Design office: 1000 Lux
Archives: 200 Lux
CAD workstation: 500 Lux
Reception desk: 300 Lux
Toilets: 250 Lux
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