General lighting is characterized by high requirements in terms of light intensity. Quite often it reaches its value 500 lx, and even 1000 lx. For this reason, fluorescent luminaires prevail. Incandescent lamps are used in auxiliary rooms and there, where necessary. In commercial buildings, night lighting circuits are separated from general lighting, which are switched on by a clock that controls a bypassed switch located in a niche outside the building.
Emergency lighting (security and evacuation), ensuring sufficient lighting of passages and communication routes for the safe movement of people in the event of a break in the operation of the primary lighting, should be used:
— w budynkach wysokich i wysokościowych,
— w kinach, hospitals,
— w pomieszczeniach handlowych o powierzchni powyżej 2000 m2,
— w lokalach gastronomicznych o powierzchni powyżej 500 m2 etc..
The emergency lighting system should be powered by batteries with a minimum current rating of one hour, in order to leave the premises. This lighting should turn on automatically after the primary lighting is gone.
Emergency lighting cables should be loaded with a current of not more than 10 A and protected by fuses with a rated current of at least one degree higher, than it is due to the load on the circuit.
Non-residential buildings are often equipped with a significant number of portable electrical appliances designed to be powered from plug sockets. For this reason, in the premises of non-residential buildings, there is a need to install multiple plug sockets. All plug sockets should be equipped with a protective contact.
These installations are rare in non-residential buildings. These are most often the circuits that power fans and compressors. These receivers are supplied from cast iron or sheet metal switchgears. The procedure for making a force installation is the same, as in the case of similar installations in industrial plants or in residential buildings.