The correct calculation of the number of spotlights in the room

method №1 - the accepted standard

For a long time there is a so-called optimum levellighting for one square meter of the room.According to the generally accepted standard, per 1 m2 should be calculated 20W incandescent lamps.This method is not the most accurate and recommended, but still if you are too lazy to perform calculations using formulas, you can simply rely on these figures.

For example, if you have a living room 3 * 4 (12 squares), you need to score as many spotlights that their total capacity of not less than 240 watts.

Method №2 - Formula

You can also find out how much you want to spots, running the calculation for floor space.The calculation formula is as follows:

N = (S * W) / P;

where:

• N - the required number of spots;
• S - room area, m2;
• W - the power density of the luminous flux (W / m2);
• P - power of spotlights.

The first question that you will have a - "where to get the value of W?».This tabular value that just helps us to choose the right lighting for the room.To calculate the number of point products, use this chart:

If you decide to install the LED light bulb, then use the following values:

draw your attention to the fact that this formula is only suitable for rough calculations as householdit does not take into account the height of the ceiling, his stuff (outboard, stretch or rack), the type of lighting (main or additional), finish and color of the walls and other important factors.You can also take a specific power by brighter or dimmer bulbs in the kitchen, bathroom or living room!

For example, we show how to calculate the number of fixtures on the ceiling in the hallway.Take a rough area - 10 squares.According to the table of the level of illumination accept 1 W (for LED lights), and buy spots on 5 watts.Total obtain:

N = (10 * 1) / 5 = 2 pieces;

As you can see, according to the calculations we need 2 spot for normal lighting of the corridor.

also recommend that you review the video, in which the expert provides a calculation technology:

should also be noted that if the ceiling height in the house more than 3 meters,specific light output to be increased by 1.5 times in the calculations.We hope that you now know how to calculate the number of spotlights on the area of ​​the room!