How to connect an induction hob. Useful tips
When purchasing a new induction hob, do not rush to plug it into one of the free sockets. In this case, first of all, it is necessary to determine the possibility of connecting this
How to connect an induction hob. Useful tips
When purchasing a new induction hob, do not rush to plug it into one of the free sockets. In this case, first of all, it is necessary to determine the possibility of connecting this household appliance to a particular section of the wiring and choose the most optimal way to connect it. Consider the question of how to connect an induction hob.
It should be noted that before purchasing an induction cooker, it is necessary to clarify which load limit is determined for an apartment (house) and assess the possibility of operating one or another induction cooker, taking into account its maximum power consumption.
Connecting a tabletop induction hob
A tabletop induction electric stove, as a rule, structurally has a cord and a plug for connecting to a regular household outlet. That is, in this case there is no need to purchase an additional cord and plug for connecting an electrical appliance. But in this case, it is very important to choose the right outlet to turn on the electric stove.
They make mistakes very often. Plug the electric stove into one of the free sockets, without taking into account its load capacity, that is, the amount of load that is permissible to be connected to this outlet.
In the best case scenario, one of the circuit breakers in the electrical distribution board will trip. As a result of overload on one of the sections of the wiring. But if the wiring is not properly protected, for example, if several wiring lines are connected to one circuit breaker, overloading will damage the wiring.
Therefore, before you start operating an electric stove, you need to find out its maximum power consumption and make sure that this appliance can be plugged into one of the available sockets. The power consumption is indicated in watts (W) or in kilowatts (kW) in the passport on the body of the electric stove, as well as in the technical specifications in the instruction manual for this household electrical appliance.
It should be remembered that an ordinary household electrical outlet is designed to turn on household electrical appliances with a rated power of not more than 3.5 kW, which corresponds to a load current of 16 A. That is, if the power consumption of the electric stove does not exceed this value, then it can be plugged into this outlet.
Next, you need to make sure that the section of the electrical wiring that powers this outlet is able to withstand the load of the induction cooker. How to find out?
First, you need to clarify which cable is plugged into the outlet and how it connects to the rest of your home wiring. The cable supplying the outlet must have a cross section of at least 2.5 sq. Mm.
If the cable is connected directly to the home switchboard, then such a wiring line can withstand the current of a household outlet; to protect such a mowing line for electrical wiring, you can install an automatic switch of the required rating. This option is the most preferable in terms of reliability.
The second common option is the cable that powers the outlet is plugged into a junction box. In this case, the loads of other outlets connected to this junction box must be taken into account.
The cable that runs from the main distribution board to the distribution box must withstand the total load of the outlets supplied from it. Therefore, if the load of the induction cooker is an overload for this section of the wiring, then to turn it on, you must select another outlet of the corresponding load capacity.
Secondly, it is necessary to assess the technical condition of the wiring. If the electrical wiring is in an unsatisfactory technical condition, then, accordingly, when a new load is switched on, it may be damaged (See. How to audit the electrical wiring in an apartment). In this case, it is necessary to pay attention to the condition of the cable, in particular its insulation.
A copper cable is preferred, but if old aluminum wiring is installed in the house, then there is a high probability that such a cable does not withstand the permissible load.
It is also necessary to pay attention to the condition of the contact connections of the wiring at the cable connection point in the home switchboard, the outlet, as well as the intermediate contact connections in the junction box.
Do not use extension cords and tees to connect the induction hob to the network. For safe operation of the induction hob, it must be grounded, that is, plugged into a socket with a working ground.
You also need to pay attention to the condition of the outlet. If the plug of the electrical appliance does not make good contact with the socket connectors, then such a socket must be replaced.
Connecting an induction hob
The induction hob has a high power, it is connected not to a regular household outlet, but to a power one designed for a current of more than 16 A.
The power socket for connecting the induction cooker is selected according to its load. The total load of an induction hob can be on average 25-32 A, depending on the number and power of the burners.
To power the induction cooker, in this case, an individual wiring line must be laid. The cable cross-section depends on the load of the induction cooker: for a current of 25 A, a copper cable with a cross-section of 4 sq. Mm, for a load of 32 A. 6 sq. Mm.
For safe operation of the induction hob, electrical wiring must have a working protective earth. That is, for a single-phase network, a three-core cable must be connected to connect an induction cooker. Accordingly, the power outlet and plug kit you purchase must also have a third grounding prong.
If it is not possible to purchase a power outlet of the required power, then alternatively, you can connect the induction hob to the terminal block installed in the back box. The terminal block must withstand the rated current of the induction hob connected to it.
As for the cable through which the induction cooker is connected, in this case it all depends on the configuration. If the supply cable is included, then it is enough to connect it to the terminal block directly on the induction cooker, and then to the purchased power plug or in the terminal block. Depending on the selected method of connecting the induction hob.
If the cable is not included, then it must be purchased separately. When purchasing a cable, you must pay attention to its cross-section. It must correspond to the connected load. You need to purchase a flexible 3-conductor cable with a cross section of 4 or 6 square meters. Mm for rated currents of 25 and 32 A, respectively.
In order to avoid mistakes, it is recommended to connect the cable to the plate itself, as well as to the plug, according to the generally accepted color coding: brown or black. Phase conductor, blue. Neutral conductor, yellow-green. Protective grounding conductor.
If the cable is already connected to the terminal block of the electric stove, then it is necessary to check the correctness of its connection. The following pin markings are usually indicated on the terminals of an induction cooker:
L. Phase output or L1, L2 (L3). Phase terminals with two-phase (three-phase) connection;
N. Zero output;
PE. The place where the protective earth conductor is connected.
Two-phase and three-phase induction hob connection
Certain types of induction hobs can be provided with a two or three phase connection to the electrical network. If a three-phase input is made in the house, then such an electric stove is connected as recommended by the manufacturer. To two or three phases of the wiring with a four or five conductor cable.
The electric stove is connected to a single-phase household electrical network with a three-core cable, and special jumpers between the phases are installed in the terminal block on the induction plate, which are usually included in the kit. If there are no jumpers, then the connection to two or three terminals of the phases is carried out with a wire corresponding to the load of the electric stove section.
It should be borne in mind that if the kit includes a cable for a two- or three-phase connection, then it is not designed for single-phase switching, since with a single-phase connection of an induction cooker, the load on the phase conductor increases to the total load of all phases.
Therefore, when using a four (five) core cable to connect to a single-phase network, two (three) phases on the plate are connected to the cable cores, and at the other end of the cable, when connected to a plug or in a terminal block, the phase conductors are short-circuited and connected to one phase of the mains Or a new three-core cable is purchased, which has sufficient load capacity for a single-phase connection of the electric stove.
Connecting an induction hob with an oven
The process of connecting an induction hob with an oven is no different from connecting one induction hob. The only difference. High power consumption, since in addition to the induction hob, the oven power is added. Accordingly, it is necessary to choose the correct cable cross-section, as well as a set of power outlet and plug for connecting the electric furnace to the network.
There are types of induction hobs with an oven, in which the maximum power consumption is limited by turning off one of the hotplates when the oven is in operation. That is, you can operate all the induction hob burners at the same time, but when the oven is turned on, the possibility of turning on one burner is blocked. This option is most acceptable for houses with a limited power limit, which does not allow operating sufficiently powerful electric stoves.
When connecting an induction hob, it is very important to select the correct protective devices required. A circuit breaker is installed to protect the induction hob as well as the power supply wiring. The rated current of the circuit breaker is selected based on the power of the induction cooker. In this case, the nearest higher current value is selected, but the characteristics of the wiring are also taken into account. The circuit breaker must protect all elements of the wiring.
To ensure the safe operation of the induction cooker, a residual current device (RCD) is installed in the switchboard, which protects against electric shock, as well as fire in the event of a current leakage through damaged insulation. The RCD must be designed for the rated current taking into account the possible load on the mowing line of the electrical wiring.
For example, if a 32 A circuit breaker is installed on the mowing line, then the RCD must be designed to operate at a higher rated current. By 40 A, since the thermal release of the circuit breaker when the current exceeds 32 A does not turn off immediately, but with a certain time delay. To protect a person from the negative action of electric current, the differential current of the residual current device must be no more than 10 mA.
Alternatively, a combination device can be used. A differential machine that performs the functions of the two above-mentioned protective devices.
Connecting electrical and induction hobs Bosch, Electrolux, Ariston, Gorenje, Hansa, Aeg, Zanussi
When buying a freestanding kitchen stove, in most cases, to connect it, you just need to plug the plug into the outlet. But many do not purchase a complete set, but only its upper part – a hob.
We propose to consider how to connect the hob Electrolux (Electrolux), Zanussi, Bosch (Bosch), Gorenje, Hansa, Samsung (Samsung), Siemens, Ariston and others with your own hands, as well as the cost of such a connection in specialized companies.
Panel connection theory
The hob, built-in type, connects to a separate mowing line with an outlet capable of withstanding currents from 32 to 40 A and providing a reliable earthing. The lead-in cable contains three copper wires with a cross-section of at least 4 mm². Modern electrical wiring in the apartment also allows connection to a four-wire power cable.
There are two types of sockets for connecting panels:
- With three contacts; Connecting the hob to one phase
- With four contacts.
Panel sockets and cables
If you independently connect the hob with the existing plug at the end of the cable, it will not be difficult. But to connect to the mains cable from the stove, where there is no plug at the end, you already need certain knowledge.
For example, a cable with four cores leaves the panel, and only three power wires come out of the wall. This means that the panel needs a two-phase connection, but there is only one in the apartment.
In this case, the technology is as follows: the brown and black wire from the cable from the hob is twisted together and connected to the phase wire of the power mowing line that comes out of the wall. The blue wire of the cable (neutral) is connected to the neutral wire of the power supply. There remains a protective ground wire of yellow-green color, it is connected to the same ground wire in the power mowing line.
In the event that wires of the same color leave the wall, using a multimeter you need to find out which of them is zero and which phase, and determine the integrity of the grounding conductor. The resulting wire connection must be insulated.
Before connecting a hob that already has a plug on its cable, it is imperative to check that the power wires and contacts inside the socket match. Sometimes they can be different. To do this, the socket is disassembled, and using a multimeter, the correspondence of the connection is determined, if necessary, the wires are interchanged.
- Connecting an electric hob implies the installation of a separate circuit breaker and an RCD, these devices are selected with the following calculation: for a 16 A socket, a 25 A circuit breaker is required, and an RCD from 40 A.
- The body of the hob must be grounded, and not to the body or a wire from another appliance, but to the outlet terminal, with a separate wire from the hob.
- Already most manufacturers sell equipment that is equipped with a protective grounding bus, it just needs to be connected to the grounding wire in the apartment.
Preparing furniture for a built-in hob
Most often, a hole in the countertop under the stove is cut out even during the manufacture of a kitchen set. But if you need to prepare the furniture yourself, don’t be embarrassed. Anyone who knows how to hold a jigsaw can handle this work.
Marking a niche for a hob must be done, considering that at least 50 mm should remain from its edge to the contour of the tabletop. Holes with a diameter of 8-10 mm are drilled in the corners of the marking. With an electric jigsaw with a fine-toothed nail file, the mowing line is carefully cut from one hole to the next on a tree. In this case, the jigsaw must be firmly pressed against the tabletop.
The edges of the cut niche need treat with silicone sealant. After that, fasteners-clips are screwed to the cuts. Having prepared the furniture, you can start connecting the electricity.
How to choose an outlet?
How to connect the hob to your home’s electrical supply? For this, it is important to choose the right
The electricity in your apartment has one phase and 220 volt input? Then you need a socket and a three-prong plug.
You have purchased equipment for the kitchen of a modern private house with two phases and 380 volt electrical input? Then, to evenly distribute the load, it is better to connect the hob to two phases. This uses a socket and a plug with four contacts.
In the first case, the blue wire (zero) is connected to the left contact, black or brown (phase) – to the right. The green / yellow ground wire is attached to a pin located usually below or above the base pair.
In case of connection four-pin socket you need to be guided by the marking of the cores on the outlet cover. Be careful! Sockets from different manufacturers differ in their design.
Electrical wiring requirements
The electric hob must be connected to dedicated outlet with sufficient grounding. For such an outlet, you will have to lead a separate branch from the panel and be sure to connect it to a separate 32 A machine. The cable laid to the outlet must be copper with a conductor cross-section of at least 4 mm². Depending on the type of socket chosen, the cable can be three – or four-core.
So, the electric hob is connected to a specially branched high-level grounding outlet with a throughput of 25 to 32 A. As for the wires, they must be copper, with three cores, and have a cross section of at least four millimeters. However, today the wiring is designed to accommodate four-core cables. Speaking of sockets that are designed to connect hobs, they are classified as follows:
Of course, if you have a ready-made plug, then connecting the electrical panel is greatly simplified. But in order to connect the wire to the outlet, you need to know the special specifics of this process. Suppose that the power supply of the hob has 4 cores (phase, phase, zero, ground), while there are 3 of them in the wall. This indicates that the cooker requires a jumper between the phases on the terminal block to connect to a three-core cable.
So, we act as follows: between the black and brown wires, we install a copper jumper, which usually comes with the kit, and then we connect one of the phases to the phase conductor of the apartment wiring (it should be black, brown, white). As for the conductors of grounding and zero, they remain intact.
The resulting cord needs insulation. If the wires from the wall have the same color coding, then using a multimeter, determine where zero and phase are.
It is important! Disassemble and carefully check the socket into which you are going to connect the electric hob, because in some cases there is a mismatch of the contacts and wires of the tile, as a result of which, after connection, it may happen that the socket sparks or begins to melt.
Consider the following tips for connecting appliances with your own hands:
- Before connecting the electric hob, you must install an RCD and an automatic device.
- The case must be grounded, but not to a conductor from other equipment, but to those conductors that are connected to the terminals from the outlet. Most manufacturers offer models that already have a protective ground bus, which you just need to connect to the ground wires of the apartment wiring.