Interior And Exterior Lighting Control
Interior And Exterior Lighting Control
Interior And Exterior Lighting Control for Electrical Energy Auditing The following steps.…


Lighting Shut off Automatically
Automatic light control devices can be installed to illuminate the interiors of buildings with an area of more than 500 m²
If the building, office, consulting room, meeting place is less than 30m, how many people can control the light using the appropriate occupancy sensors
Occupancy sensor can also be used in storage areas where items are stored. Elsewhere you can use the following automatic control tools
- Programmable timers can be set up where the area is less than 2500 m² on a single site
- Those in the room can set up ccupancy sensors to switch off all lights within 30 minutes of leaving
- A separate switch must be set to manually turn on-off even when using occupancy sensors in light fittings
Day Time Control In Lightings Area
Manual or automatic control devices must be fitted to lamp fittings located in natural daylight areas larger than 25 meters square area
- The output of lamp fittings can be reduced by up to 50 percent
- Complete control of lamp fittings where natural daylight is available
Space Control
Where the ceiling of a building has very high walls, there should be at least one control device to control the lights when setting the lights in general
This controlling device can be operated manually or on sensors. Where the total area is less than 1000 m², each control device must control a maximum of 250m area
Where the area is more than 1000 m², what is the maximum control capacity of each control device? need to control the area. All control tools should be set up for easy use
Exterior Lighting Control
All lights outside the building should be controlled using photo sensor or time switches
This allows the lights to be switched off when licht is not required
Extra control
control tools can be fitted with the following lighting applicaitons to better control the equipment
- Separate controls should be set for lights above 300 m² in areas where objects are on display
- A master control switch must be installed for all light fittings permanently installed in hotels (restaurants) and roadside eateries
- Workspace lights, shelves and cabinets should have a master control or switch mounted separately on the wall for easy-to-use and code writing
- For growing plants. Separate control switches should be set for lights and for heating food
Exterior Building Ground Lighting
Efficacy of lamps over 100 watts in floor-mounted light fittings to illuminate the exterior of buildings should be 60 lumens / watt
Otherwise you have to control the lamp fittings using motion sensors
INTERIOR LIGHTING POWER
Lighting systems inside buildings should not exceed the allowable indoor lighting power. The allowable lighting power is stated in the building code in two ways
- Building Area Method
- Space Function Method
Building Area Method
In this method you need to find the area of the total lighting space in each building
Multiply this area by the LDP (Lighting Power Density) specified for the respective area. This value is the power of the allowable light at that particular location
Similarly for other locations, find the allowable lighting power and add it all up to calculate the total power
S.NO | BUILDING AREA TYPE | LDP W/M² |
1 | Office | 10.8 |
2 | Hospital | 12.9 |
3 | Workshop | 15.1 |
4 | Library | 14 |
5 | School | 16.1 |
6 | Hotel | 10.8 |
Space Function Method
S.NO | Space Function | LDP W/m² |
1 | Hotel | 11.8 |
2 | Office | 11.8 |
3 | Class room | 15.1 |
4 | Hospital | 8.6 |
5 | Sports Area | 4.3 |
6 | Convention centre | 7.5 |
7 | Religious buildings | 18.3 |
8 | Conference hall | 14 |
In this method, to find the total area of the space separated by walls that are 80 percent of the height of the ceiling or above, measure from the center of the partition wall
In addition, the balcony and projection should be taken. Multiply the LDP for the specific area specified in the table below by the area thus found
Thus the wastage in each area must be found by adding the sum of the light and finding the wastage for the required lighting system
Interior Lighting Power
Installed interior lighting power is the amount of total power required for light fittings and ballasts, lamps, curent regulators, control device, etc.
- The wattage of ordinary bulbs with a ballast-free mediumbase is the maximum wattage indicated on it
- The wattage of the lamps in the ballast is equal to the sum of the input power of the lamp and the ballast specified by the manufacturer
- The wattage of fuses used for overload protection, such as circuit breakers, should take into account its maximum load
EXTERIOR LIGHTING POWER
The power of the lights installed outside the buildings should not exceed the value specified in the table below
S.NO | Exterior Lighting Application | Power Limit |
1 | Building Entrance with Decoration | 13W/M² of decorated area |
2 | Building Entrance | 90 W/length in metre of door width |
3 | Building Exit | 60 W/length in metre of door width |
4 | Front of a building | 2 W/m² if vertical area of that place |