Electrical installations are planned work that must be done along with a building or an office is to operate without electrical faults. There are experts that handle all electrical connections of residential houses, as others are responsible for stores and production shop floors. Different type of electric light switches (sklopke) is used for different locations as the purpose and location of use always determine the type of electrical switch to using. The primary function of electrical switches is to ensure an electrical circuit is complete in making and breaking of the circuit. Electrical installation of any kind must be reported to the local authority in some countries while some other encourages the do it yourself approach for small faults like a change of electric sockets (utičnice).
Experts are needed in electrical installations so as to avoid dangers and posing of electrical switches as potential hazards to people unknowingly. Experts know that metallic light switch must be used to replace a plastic one if there is no circuit protective conductor. This is to avoid shock, as the earthen conductor is very important to metallic electric light switches (prekidač).The plastic light switches can work without this protective conductor, as the material used is an insulator that I a poor conductor of electricity.
Many switch plates have more than switch on them. These types of switch plates are called two gang switch as they can be used to control more than one light source as opposed to the one gang switch that can only control one light source. We have a one-way switch, two-way switch and also the intermediate switch, which can be a dimmable light switch (dimmer). The one-way switch is used to put light on and off in one direction while the two-way switch can do same for the same light from two different locations. The connection terminals are two, three and four respectively for the one way, two ways and intermediate switch types.