One of the most frequently asked questions about lighting to our team about what is the rate of artificial lighting for different types of premises and howlighting must be installed to meet the minimum requirements for lighting.
The answer to all these questions can be found in a very archival ordinance of the Ministry of Health from the distant 1976. Here it is (you can download it from the link below) Ordinance № 49 for artificial lighting in buildings most common problem of people who are not professionally involved in lighting is that the Ordinance details minimum illumination are given in lux and did lamps marked in lumens, so in the following lines we will try to explain how the most can easily make an approximate account of whether the light is sufficient, of course if you need accurate measurement of available your night lighting should contact a specialist. in this our article about light we tried to explain to understand the various terms related to light and lighting fixtures. in the most general to convert lumens in lux must know to obtain light of a luxury need a lumen illuminate one square meter. This most generally means that if you take one light bulb with an output 11 watts which emits about 600 lumens and succeed with all these lumens to highlight just one square meter without a loss beyond have achieved brightness of 600 lux.
In practice, however, things are not so simple, because the light is diffused and it is very difficult without a light meter to determine exactly how much luxury is a lit surface. In addition, when you measure your lighting should keep in mind that depending on what you use the room rate for artificial lighting is measured in different locations. In most workplaces rate of light is measured at the level of the working table which is typically up to 80 cm while the space in which no work is done activity rate of light is usually measured on the floor of the room. Here are a few examples: -Lighting of Halls representative meetings-500 luxury- Lighting Stores with Chr. self-service items-400 lux-Lighting of self-service stores-300 lux-Lighting of the study rooms-300 lux-Lighting Doctors Offices-200 luxury-Lighting of Kindergartens-200 lux-Lighting of the Common premises of schools, theaters, cinemas-150 lux-lighting laundry rooms-100 lux-lighting of stairs in public buildings-75 lux- lighting Bedrooms kindergartens-75 lux-lighting of stairs in apartment buildings and hotels-50 luxury to find out if your lighting around meets these requirements for artificial lighting collect emitted lumens of all lighting tyala you use (lumens must write them on the packaging of all lighting) resulting sum in lumens divide by the size of the room (including walls and ceiling), and if the result is close or greater than the specified rate of illumination then surely cover the norm for wall lighting.
Here is an example of how you can calculate not have a light meter on josephnightlights for how many wall night lights you need lighting laundry room sizes 5×5 and 3 meters height with a minimum of 100 lux lighting and make sure that the resulting illumination is lower than the requirements: -First calculate the size of the floor, ceiling and all walls-received squares (110) multiplied by the minimum rate of lighting laundry rooms 100 lux-The result 11,000 is the amount that you should aim to get into the lumen of all the luminaries-knowing that one energy saving bulb of 20 watts emits around 1100 lumens easily we can calculate that for that room we will need 10 lamps with this power. calculated thus lighting will surely meet the minimum requirements for light, but not the most economical because if instead found energy saving bulbs use fluorescent lamps with reflectors to achieve minimum standards of lighting you use lighting with almost half power. this short article does not exhaust a small part of all lines of artificial lighting, so do not hesitate to ask any of our e-mail any questions relating to your lighting and lighting fixtures.