- Method number 1 - Generic standard
- Method number 2 - Formula
Method number 1 - Common standard
There has long been a so-called optimal lighting level for one square meter of room. According to the generally accepted standard, for 1 m2 you need to calculate 20 watts of incandescent power. This method can not be called the most accurate and recommended, but still if you are too lazy to perform calculations by formulas, you can just rely on these figures.
For example, if you have a living room of 3 * 4( 12 squares), you need to collect as many spotlights as possible so that their total power is at least 240 watts.
Method # 2 -
Formula You can also find out how many spots are required by calculating the area of the room. The calculation formula is as follows:
N =( S * W) / P;
where:
- N - required number of spots;
- S - the area of the room, m2;
- W - specific power of light flux,( W / m2);
- P - power of one point light.
The first question that you will have is "where can I get the value of W?".This is a tabular value, which just helps us choose the appropriate lighting for the room. To calculate the number of point products, use this table:
If you decided to install LED bulbs, then use the following values:
Please note that this formula is suitable only for gross household calculations.it does not take into account the height of the ceiling, its material( hanging, tension or rack), type of lighting( basic or additional), decoration and color of walls and other important factors. You can also take your specific power by choosing brighter or more dim light bulbs in the kitchen, bathroom or living room!
For an example, let's show how to calculate the number of fixtures on the ceiling in the corridor. Take an approximate area of 10 squares. According to the table, the level of illumination is 1 W( for LED lamps), and the spots are bought at 5 watts. Total we get:
N =( 10 * 1) / 5 = 2 pieces;
As you can see, according to the calculation, we need 2 spots for normal lighting of the corridor.
We also recommend viewing the video in which the expert provides his calculation technology:
It should also be noted that if the ceiling height in the house exceeds 3 meters, the specific power of the light flux should be increased by 1.5 times in calculations. We hope that now you know how to calculate the number of spotlights per room area!
