How to connect a grounded outlet

In private buildings and apartments of new buildings, the wiring of which is made using three-conductor wiring, the problem of grounding, as a rule, is easily solved. But how to connect an outlet with grounding in the houses of old buildings, not everyone knows.

In such houses, the wiring is made in the form of a two-wire line, because of this the task is somewhat more complicated. To solve it, you need to take a number of additional actions. These operations usually boil down to the organization of another (grounding) core, stretched from the flat panel to the grounded electrical access shield.

Grounding Options

When carrying out electrical work, allowing you to easily connect to the network outlet with grounding, the following options are possible:

• Laying an additional bus made of copper wire of a certain diameter and stretched from the room to the access distribution board with free grounding terminals.
• Arrangement of the so-called "zeroing", the essence of which consists in connecting the grounding contact of the outlet to the "zero" wire. Electricians consider this connection method more preferable, since in this case it becomes possible to use protective disconnect devices in the line.

The insulation of the wires supplied to the apartment for the convenience of connection is made in different colors. The ground wire in accordance with the standard is insulated with a mixed yellow-green color, while the phase conductor is usually made of brown or red sheath. The “zero” wire in most cases is performed in blue or blue insulation.

If there are junction boxes in the apartment, the connection can be made directly to them (if there is a third grounding conductor, of course).

Connection procedure

Immediately before you connect a double grounded outlet, you will have to perform the following preparatory operations:

• strip the ends of the wires that supply power to the outlet;
• remove the decorative cover from the mounted product;
• loosen the fixing bolts at the terminals to which the wires will later be connected.

Further manipulations associated with plugging in sockets are usually reduced to the following operations:

1. The ends of the wires, which are brought out of the plastic landing box, are led to the contacts and loaded into the corresponding terminal holes. Phase and neutral wires can be connected without regard to their functional purpose (i.e. they can be swapped). In contrast, the ground conductor must be connected to a terminal block with a special designation, which is a ground symbol.
2. After connecting the wires, the case of the socket without the cover is fastened with screws to the plastic mounting box (socket); at the same time, the supply wires are neatly tucked into its case.
3. Outlets of the old type are equipped with special legs, which allow fixing its case by tightening the screws.
4. After fixing the outlet in the socket, you should check the bolts on the terminal blocks again and only then replace the decorative cover.

In conclusion, you must warn you that before carrying out the full range of activities for connecting the outlet, be sure to remove the power supply from the entire apartment. Such a shutdown is usually done by turning off the corresponding machine gun or unscrewing the plugs.

Video

In the following video you can see how the socket with grounding is installed on a professional level:

A photo

Scheme

The schemes offered by us will help you to correctly connect the socket with grounding: