How many light bulbs do you need?

Question

Do it yourself

Good evening people.
I am doing repairs in a room (15 sq.m), I want to make spot lighting, but I can’t find information anywhere on how to calculate the number of light bulbs.

Answer 1

Are you talking about drywall ceilings? I would hang the bulbs at the frame stage and see if there is enough. Added if not enough.
Let's say, for a kitchen of 9 sq.m, an 18 W LED lamp is enough for general lighting and 2 linear LED lamps of 18 W each for local lighting of the working area.
In the hall of 18 sq m - a chandelier with 5 fluorescent housekeepers of 20 W each - good general lighting.
It turns out you need LED bulbs for 50 W in total and with the ability to turn on 1/3 bulbs, 2/3 bulbs, and all together - weak light, normal light, bright light.

Answer 2

google illuminance calculation/illuminance calculator

Answer 3

Sanitary lighting standards were invented for a reason. Based on the luminous flux of lamps and indicators for general illumination, illumination in the "working" area, you can easily calculate the number and location of lamps.