Everyone is familiar with an electrical device, such as a power outlet. There are many varieties of them, the choice of which depends on various factors. This is one of the most common devices in everyday life. Socket outlets serve as a connection between the plug of household electrical appliances and the supply network. The configuration of the equipment depends on its functions, as well as the country for which the device was manufactured.

In the process of operation of socket outlets with a grounding contact, a certain number of consumers are connected to them. If old instances of socket outlets maintained a load of no more than 10 A, then the new devices are designed primarily for a total voltage of 16 A.

Device sockets

A socket outlet is a device consisting of a protective housing, a contact element and a shoe.

The protective plastic case not only covers the contact elements, but also performs decorative functions.

The pad acts as the base on which the contacts and the housing are held. They are used both for open and hidden installation of the socket outlet.Socket and its types

Its heart is the contact element, which can be made in the form of a key or screw terminal. The plug must be in tight contact with the plates. This determines the quality of the outlet.

There are many varieties, the differences of which should be understood before purchasing.

Installation type

By type of installation there are two types of electric equipment are presented. Socket plug the flush fitting is suitable for indoor installation. Its main part (socket and pins) submerged in the wall. The body almost does not protrude to the outside. With the help of special mechanism in the bottom part of the product is fixed to the walls of the mounting box. The node wires embedded in and firmly pressed in. This design allows the plug to fit snugly to the contact plate.

An open type power outlet is attached to the wall. These varieties often have various additional decorative and functional elements.

Electrical circuit

Receptacle without grounding are the most common devices of the type in the former Soviet Union. They are designed for connection two wires – the “phase” and “zero”. This is true for those apartments where grounding is not provided. Are the majority among the buildings of the Soviet time.

Socket plug with grounding contact has a connector for the third wire. Vanishing in this case occurs earlier than the power supply stops later. Such devices are mainly used for connecting electric cookers, instantaneous water heaters, etc. Although it would be correct to any electrical ground. This increases the safety of its operation.


By way of use in everyday life, there are rosettes for dry and damp rooms. This should be taken into account when installing in a bath room, swimming pool, etc.

A socket 16A power plug when installed in a humid room should have a high degree of protection. Otherwise, at such a high power, unpleasant and rather dangerous situations can arise.

Such equipment is equipped with special rubber rings or membranes. They protect the contact elements from moisture. The internal flange contributes to the drainage of the condensate. Such a socket outlet with a grounding contact is more often installed externally.

Equipment that does not have a protection system in place is installed in dry rooms.


There are plug sockets of single-, double- and triple-pole type.

Single-phase species are distributed in residential buildings the most. She has access to only one plug. It is quite simple and convenient to mount. However, the disadvantage of the sockets of the submitted form is the inability to power some appliances. It will have to use a double or a tee.

The socket outlet bipolar allows to supply two electrical appliances in one point. The same principle also applies to the three-phase variety. It connects three consumers.

There are standards for the number and quality of outlets in different rooms. So, for rooms in ordinary apartments for every 6 square meters. m must have 1 outlet. If this is a corridor, then one device for connecting electrical appliances must be accounted for every 10 sq. Km. m area.

For kitchens, there are special requirements. If it is less than 8 square meters. m, then in this room should be at least 3 outlets 6-10 A and one with a ground to 10-16 A.

For the kitchen more than 8 square meters. m per one 6-ampere device should be more. If an electric stove or oven is used, the socket must be 25 A with a mandatory grounding.

The body is prescribed a level of protection against foreign objects and moisture. Next to the sink are installed waterproof copies of equipment.

A socket outlet is an integral honor of the electrical supply system of any apartment. Varieties of the presented equipment allow to make its installation in rooms with very different conditions. It is necessary to select the correct type of outlet, relying on all the above characteristics of each of them. This simple and often encountered device requires a serious approach, in order to avoid unpleasant situations and problems during operation.