home Instruments

Socket for hob and oven

When performing repairs in the kitchen, as a rule, a new kitchen set, oven and hob are installed. At the moment, there are two modifications of the oven and hob:

independent devices;
complex headset.

Combined hob and oven

The main difference is that independent devices are directly an oven without a hob, which can be installed anywhere.

Complex devices include an oven and a hob in one housing with controls on the front of the appliance. In appearance, they resemble classic electric stoves, where the oven is located below, and the hob is located on top.

Cabinet location

To connect, it is necessary to prepare a workplace for the oven, namely a special niche in the kitchen set, subject to the following parameters:

The presence of distortions of the installation surface is not allowed. If the position of the oven is uneven, the distribution of heat energy inside the appliance is uneven, which, in turn, can lead to breakage.
Mandatory presence of gaps between the surface of the kitchen set and the oven. The reason is that during operation, the body of the device heats up and an abundant release of thermal energy occurs.

Distances from the walls of the niche to the cabinet:

from the side wall to the oven body - 5 cm;
from the bottom to the base of the device 8-10 cm;
gap for ventilation from 4 cm between the wall and the back cover.

Preparing the site for installing the oven

TOcable and circuit breaker

Due to the high power consumption of devices, the power of which starts from three kilowatts and above, it is recommended to power the cabinet with a separate cable. A three-core wire is suitable for this purpose (the presence of a grounding yellow-green conductor is mandatory). The cable cross section is selected based on the rated power of the oven.

With an electric stove power above 3.5 kW, a cable with a cross section of 3x4mm 2 and a socket with an automatic switch of at least 32 amperes of operating current are selected.

Cabinet connection

After completing the wiring and socket installation stage, connecting the cabinet will not be difficult. Switching of the device is carried out using a plug with grounding contacts.

The connection is recommended to be made using a separate circuit breaker due to the high power of the appliance. To ensure safety, you must use an RCD (residual current device) or a differential circuit breaker.

Depending on the design, the power supply to the cabinet can be supplied by means of a plug installed by the manufacturer or by direct connection.

When switching without using a plug and socket, a wire is laid from the switchboard, and the heating surface is connected directly to the factory contacts.

The second way of supplying voltage to the cabinet is more reliable, due to the absence of additional transitional resistance between the plug and socket contacts.

If the plug on the cabinet is not provided by the manufacturer, you will need:

a piece of cable from the socket to the cabinet;
power plug with grounding contacts.

Work order:

To connect the cable, the plug unwinds and the wire is fixed in the terminal clamps.
The working position is restored.
The plug is connected to the socket, as a result, the cabinet is ready for use.

To connect the oven, you can use a Euro socket with grounding contacts (if the load does not exceed 16 amperes) or a specialized power socket for an electric stove. The choice is made depending on the power of the oven.

The yellow-green wire must be put on a separate terminal in a cabinet designed for grounding electrical equipment. The points of connection of the main wires (phase and zero) are switched to free contacts provided by the manufacturer.

The color of the cable for connecting the oven

Plug for hob

To supply power to the hob, a three-core copper cable must be used. For 380 volts, a five-wire wire is used.

The cable cross section is selected according to the load and the calculation of the operating current, but not less than 4 mm 2, the machine is selected for 32 A. When using a 6 mm 2 cable, the circuit breaker is used for 40 A.

The peculiarity of the hob is that the heating of the surface occurs at lightning speed. This phenomenon is due to the high power consumption (up to 7 kW).

If there is a stationary outlet for powering the electric stove, it will not be difficult to make the connection.

The hob plug is connected as follows:

A power plug is purchased that is rated for 220 volts AC.
The protective cover is removed.

There are six pins inside the power plug for connection. Terminals one, two and three are for connecting the phase conductor (L), as a rule, they are connected by a jumper. Contacts number four and five are designed to connect the neutral wire (N). Terminal number six is designed for a ground conductor.

When using a 220 volt outlet, the phase wire is connected to pin one (L), and a jumper is installed between the first three terminals.
The neutral conductor is connected to the fourth or fifth terminal (N).
The sixth terminal is designed for protective earth connection.

If the phase conductor is connected incorrectly, the protection (RCD or differential machine) will constantly work.

Wiring diagram for a power plug for a 220 volt hob

The 380 volt power plug is connected as follows:

The fork cover is removed.
Phase conductors are connected to contacts (1), (2), (3) (marked with the letter L in the figure).
The neutral wire is connected to terminals (4) or (5) (N1-N2).
Ground is connected to the sixth pin.

Sockets for hob

The 220 volt socket for the hob differs in the location and shape of the holes for the plug. These switching devices are made in such a way as to exclude the possibility of incorrect connection of the phase and protective conductor, in the form of a hole in the upper part of the socket, different from the others in shape and diameter.

The 380 volt sockets are a fixed five-socket switchgear designed for a three-phase load, neutral wire and protective earth.

Before purchasing this socket, you must make sure that the plug fits into the contact holes without force and deformation of the current-carrying pins.

Connection order:

The power cable is de-energized.
The indicator checks the absence of voltage on current-carrying parts.
On the contacts numbered from the first to the third (L1-L3), inclusive, opposite phase conductors are connected in an independent order.

For the hob, the phase sequence does not matter.

A neutral conductor is connected to the contact connector marked (N).
The ground wire is connected to a terminal designed for grounding (in some sockets it has the number six or is indicated by a “tree” icon).

Cooktop power

Depending on the manufacturer, there are several types of power supply for the heating surface:

connection of 380 volts using two phase conductors;
for a network of 220 volts;
the ability to switch three phases at 380 volts.

Before starting the connection, it is necessary to check the diagram with the terminal box of the device and the instructions to determine the factory assembly.

Socket contacts with numbers from the first to the third (L1-L3) inclusive are used to switch the phase wire.
Terminal number five and six (N1-N2) is needed to connect the neutral conductor.
For switching the protective earthing of the hob, a separate socket contact with a bolted connection with the corresponding “tree” icon is provided.

Power connection diagram for the hob

With a suitable 220 volt power supply to the hob, there is no need to interfere with the factory circuit, it is enough to connect the conductors according to the color and terminal numbers.

A brown wire is used to connect the phase conductor. The blue wire is used for zero switching. The green/yellow wire is used for the protective earthing of the hob.

For many new buildings and private houses, the power input is made with a three-phase cable with an alternating voltage of 380 volts.

Two-phase connection:

For a two-phase connection, a jumper between the second and third contact is removed in the terminal box of the hob.
Opposite phase wires are connected to the second and third terminal (L1-L2) as shown in the figure above, marked 2N.
The neutral conductor is connected to the fourth terminal.
Protective earth is installed on a special bolted connection of the hob.

With such a power supply, an accurate calculation of the power of the entire power supply of the room is necessary due to the use of two independent phases. If the load is not distributed correctly, a "skew" may occur, which will lead to different voltage values \u200b\u200bon each individual phase.

Three-phase switching of the hob:

When using a three-phase connection, jumpers are removed from contacts (1), (2), (3) (L1-L3) with the designation 3N.
Phase conductors are connected to the hob and the plug to the terminals (L1-L3), the order of phase sequence does not matter.
To switch the neutral wire, terminal four or five (N) is used. It is recommended to use the remote terminal number five for safety reasons.
Grounding is connected to a special socket with a bolted connection and appropriate marking.

When using 380 volts, special care is required when switching. If at least one phase wire is incorrectly connected, the hob may fail or burn due to a short circuit.

Connecting the hob. Video

You can learn about the nuances of connecting the hob from this video.

For switching the hob and oven, accurate calculations of the load of conductors and the choice of protective equipment will be required. It is strongly not recommended to use these devices without special devices for protection against leakage currents and short circuits. To perform the work, it is recommended to use the services of professionals who will calculate the load, protective equipment and select the necessary accessories.