Build Daily


August 12, 2017 18:06

Connecting sockets with ground - the basic rules

Connecting sockets with ground - the basic rules

When connecting wiring the main challenge facing the owner - is to protect an apartment or house on the circuit, which is why the question arises, how to connect grounded receptacle?

small number of appliances that use electricity in a private home for a long time, it was the reason that the ground or not used at all, or a wire to earth throws on the metal pipe or dig in the ground with a metal peg.

These so-called "grandfather" grounding techniques do not actually carry out their functions properly, but it was not noticeable.

When used in the home, for example, electric iron, refrigerator, TV and computer, the lack of properly assembled grounding was not palpable and the question, why do we need grounding outlet in the house, not even raised.

difference between the house and the house grounding without grounding was not felt.

Now modern homes are equipped with everything needed for a comfortable stay.

Simultaneous use of the washing machine, electric kettle and a boiler for heating water gives a tremendous strain on the wiring.

modern appliances, which are present in any private house, have a high capacity, their normal functioning requires grounding in the outlet.

To connect it is necessary to ground the electrical circuit of the house.Here's how it's done.


  • How to organize a grounding?
  • Types of sockets with ground and preparatory work
  • Connect grounded receptacle

How to organize a grounding?

the contours of a private house ground understand the system of metal rods embedded in the ground.

Metal is an excellent conductor of electricity, and the system of conductors, grounding provides a private home, should take the form of an equilateral triangle with a side length of 1.5-2 m

grounding scheme

ideal material for the ground loop -. This steel, however, from heroften it is necessary to give up because of the price.

quite acceptable metal angles of stainless steel, which are connected to each other by welding.

to the corners of the triangle fasten electrodes triangular dig a hole depth of more than half a meter, and it is omitted in this design.

preferred pit place near the switch box and be sure to provide warning signs.

in a private house on the scales pillars dug ground loops can be placed quickly assembled decorative flowerbed.

absence of her trees and shrubs eliminates the need to dig deep pits, and, consequently, the ground loop is securely locked from external access.

Connect trench and pit wall of the house, where the plate.By the edge of the metal circuit are welded bolt, fix it on the wire cross-section of six squares and now it needs to be connected to the shield.

Check circuit performance can be a tester, or in his absence by a simple method using a 100W bulb.

If in a private house wiring and installation is already there, it is possible to connect one wire to the lamp phase, and the other - to the contour.


If the light is, the vote of its brightness - the normal bright light indicates that the system is working properly, flashing or dim light indicates a problem in the circuit, and the complete absence of light from the light bulb indicates a serious error,to correct that you need to do it all, including the scheme itself.

If something in doubt, in order to check the circuit, you can invite electricians.It is advisable to check after laying wiring, but the closure of its interior materials.

Types of sockets with ground and preparatory work

Sockets can be internal (inserted in the recesses in the wall) or external (protruding above the surface of the wall), but the main difference between them is that one contains a grounding element when applying current, andthen tokovyvodyaschy.

Outwardly they differ by the presence of the third contact.

the post-Soviet space is the most common earthing-pin, which has two thick pin and ground output in the form of brackets or plates.

wiring in the house can be open (visible extending to the sockets and switches in a special box) or closed (inside the walls).

In a wooden house is only permitted an open wiring, respectively, apply only the external sockets.

Typically, in an apartment in new building has already let down and grounding of all you need to do to install a grounding outlet is properly distribute wires.

The apartment old house building is not possible to install a socket with an earth ground because the ground loop is not provided to them.

Socket with earthing

initial situation to start work on the installation of sockets with grounding end is finishing work and bred at fixing electrical wiring outlet.

Wiring, providing grounding, always three-wire, wires are color-coded: yellow-green wire - "earth", blue - zero and phase conductor can be any color, most often it is brown.

When your apartment to places of outlets of the future mounting summed two-wire cable, and you want to put a grounded outlet, you need to specify the organization, serving the house, if there is a ground wire.

in a newly built private house building in paving the electrical wiring, the boss itself provides ground equipment.

If the apartment or any other room you need to connect the inner outlet, will require additional preparatory work.

Naturally, electricity in the apartment should be turned off at the same time.First, at the installation Escutcheon.


They are designed for installation with ground socket and are for plasterboard walls and concrete walls.

Escutcheon To install in plasterboard wall drill a hole diameter of 6.8 cm under a single socket and a rectangular opening for a double, podrozetnik inserted into it and fix screws.

Enclosures into a concrete wall fixed with plaster.Pulling the wire, and you can now connect a grounded socket.

Connect grounded receptacle

consider how to connect a grounded socket in the apartment or in a private house-building.

To make installation, we need:

  • -slot screwdriver;
  • screwdriver voltage indicator;
  • knife wire stripper;
  • Phillips screwdriver in diameter locking bolts;
  • pliers.

Despite the fact that space is de-energized, all tools electrician must have an insulating rubber layer in the places where he was touching his hands.

If there is no insulation on the instruments, it is quite possible to make your own rubber packing.Remember all the work is done by electricity only when the current supply is off.

To install we need to remove the wiring from the Escutcheon and make sure that the three of them.Strip all three wires coming out of the Escutcheon 1-1.5 cm.

Remove the cover from the base, insert it into the outline and Escutcheon fixing bolts.Now we need to connect wires to the terminals.


first connected "earth", then "zero", and only then the rest "phase."After finishing the installation, put the wiring so that they do not interfere with fixing screws and tighten.

The apartment is sometimes necessary to connect the double outlet.Special no difference in connecting, the lead wire, if it is one, it is necessary to divide terminals into two parts.

The rest of the connect in the same way.

If open wiring installation shall be carried out in the following order: to mark the place of accommodation outlet, and then from the junction boxes to sum the three-wire cable.

installed using screws basis, we can make the wire ends into it.Special distinctions between internal and external outlets at the same time not.

When finished installation, you can put on and fix the outer cover.

work grounding circuit is already checked, and after all the work necessary to verify the work elektrotochki.

Open wiring is much easier for a beginner than the inside - is almost impossible to go wrong with the seat of power points if you make a mistake, it is very easy to replace all the wiring that goes on the outside of the wall and closed plastic boxes.

However, due to the fact that the plastic box significantly spoil the design, open wiring is used in the flat is extremely rare.


Perform installation of sockets with grounding in his own house-building or in an apartment quite easy in the presence of a minimum set of tools and basic skills dealing with electricity.

theoretical part is usually understood.

If you have doubts about the practical part or beginning work, you can see that the desired result is not obtained, you should consult a professional electrician.