Grounding electrical appliances is necessary for removal from voltage equipment, which is accidentally fed to its terminals - for example, with a short circuit or destruction of electrical insulation of wires. This explains the need to settings with grounding sockets, in which additional terminals on the electrical appliance fork and the socket come into contact earlier than the contacts of phase and zero wires.
Features of the socket with grounding
Externally, the socket with ground is different from the usual presence of a third contact. In Russia, the fosteles of type F are set. In such products, two round holes with a diameter of 4.8 mm and grounding in the form of a bracket located on the rosette diagonal are made. In foreign counterparts, grounding contacts are made in the form of pins with slots. Often there are outlets with a protective curtain, with a timer with an ejector, for wet rooms.
Installation of sockets with grounding in the apartment
To put grounding to the outlet in the apartment, you need to stretch the three-core cable to the grounded panel located on the staircase of the apartment building. The three-core cable is released with wires marked with different colors. Green-yellow is always connected to grounding contacts. Blue or blue - to zero contact, the color of the phase wire is not regulated, but always differs from the color of zero and grounding.
Electricians in apartment buildings prefer other means of grounding, in which the grounding wire from the socket is connected to zero contact on the shield. With such a grounding scheme, you can enter the RCD and automata system to be entered in emergency situations to the electrical circuit. Usually zero contact is a bolt on the electrical panel, to which grounding from the apartment is connected.
Installation of socket with grounding in a private house
In private houses, tested grounding into the room easier. In the ground, there are three or four metal corners next to the house. The corners are fixed with a copper wire with a cross section of at least 1.5 mm, which is stretched to sockets. On the perimeter of industrial premises, ground contours are placed, to which ground cables are carried out from electrical equipment.
Preparatory work
Determine the location of the socket. Perform a niche wall under the embedded outlet with a perforator with a special nozzle. Note the track of the wire from the niche toward the electrical tailor. Stretchorrow Perform a niche for the cable. Set a three-core cable into the trim, secure it with a gypsum solution. Skip the wire through the side openings of the opposition and output. Install in the opening of the pea and also lock the gypsum. Disconnect the power to the shield. Believe the lack of voltage on the contacts indicator. An ideal option for wiring grounding in the apartment and the installation of a socket with a ground is a major overhaul. Then all the wiring and socket can be dried into the wall and questions with camouflage of wires in the apartment does not occur.
Connect to socket
Free 5 cm three-core cable from isolation, wire ends lead the solder. Bend the purified ends into small rings with a diameter of up to 0.4 cm. Welcome the ends of the wires with the working zero and the phase to different sockets and secure. There are no strict requirements for connecting the working zero and phase to the left or right side of the socket, the location of arbitrary. The grounding element of the socket (metal plate) is made in the form of the letter "P". Grounding wire is attached to the plate with a bolt. For prophylaxis once a year, pull up wire fastening bolts. Connect the wires to the electrical tailor. Install the outlet in the opposite and fix it.
Work control
Check the grounding using special equipment, when the device is properly installed between the conductor and the phase, the device shows 220 V.
An ideal option for grounding of grounding in the apartment and installation of sockets with ground is a major overhaul. Then all the wires can be dried into the wall, and there will be no problems with camouflage of wires in the apartment.
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