Why is the machine beating with current? Causes and actions

The human body is very susceptible to various strokes, especially to those that it receives unexpectedly. Unpleasant moments can be delivered not only by people, but also by objects from which it is not peculiar to expect. Household appliances are usually designed to create comfort and coziness in the house, and even if all the norms that require the safety of household appliances are met, they under some circumstances begin to "fight". The walls of the home appliances used in the kitchen or in the bath suddenly, for some reason, start to flow current, because of which the owners of these devices can begin to feel a light tingle.

The technique started beating. Let and not very much, but still unpleasant. A similar malfunction may occur in machines that are installed in rooms with high humidity, old models, and even new ones installed in a dry room. It is at such moments that the question arises: "Why is the current beating the machine?"

Where does the fault lie?

One of the main reasons for the appearance of such a situation is the illiterate installation of devices or their incorrect grounding. If these measures were not performed correctly, this could lead to a violation of the electrical safety of the equipment in operation and to penetration of its surface. It should be noted that according to the technical norms in force at this time, it is forbidden to use pipes connected to the water pipe in the form of grounding elements.

If the technique is ok

Even serviceable household appliances are capable of causing their owner an unexpected impact when included in a two-wire line. The reason for this behavior and the answer to the question of why the current beats the machine is the built-in surge protector, which is located at the input of electrical power.

This design consists of two capacitors having a common point on the walls of the equipment:

• The first connects the phase conductor and the housing;
• The second is the neutral wire and the housing.

Modern manufacturers believe that their users use only three-wire electrical networks with a separate protective conductor when switched on. In such a case, nothing bad can happen, and the 110 volts without problems go to the protective neutral wire. But in reality, two-wire lines are mainly used. It is because of them from any home appliances with an unsuccessful touch can get a short, but very painful discharge.

The impact strength increases

A similar problem can not be solved by removing the common lead of the input filter from the housing. Of course, this will reduce the possibility of a strike, but, unfortunately, not much. This is explained by the fact that the insulation of any wires that are located inside the equipment will eventually wear off, which leads to the fact that the "phase" will appear on the wall of the unit. In the first stages, such attacks will not worry you too much, but eventually they will gain strength, and in the end you can get a shock of 220 volts. The owners of "home helpers" installed in the bathrooms fall into a special danger zone.

Replace the old wiring

The worn-out isolation can be a direct threat to human life. That is why when deciding how to connect a washing machine, it is necessary to take into account that it must enter the additional system of equalizing the potential of the bathroom. Pipelines with hot and cold water, a metal bath, a washing machine, a vent box - all these items need to have a reliable electrical connection. If these conditions have been met, then a simultaneous touch of two structures that are conductive will not carry a threat to your life.

What to do next

But for complete safety it is necessary to take into account the fact that there is one more chain: a half-man-body of equipment. There are two ways to prevent this situation: grounding of the washing machine or installation in the power supply circuit of the RCD. You can combine both ways.

What not to do

When doing grounding, sometimes there are some difficulties. Do not use water pipes as earthing switches. It is also forbidden to connect the zero protective and zero working conductors without a re-grounding device. If you have a two-wire network, there is a hope that the housing at the access control board will be grounded. If this is not the case, it is impossible to ground. Information on the condition of the switchboards located in the entrances can be obtained from the housing department, the housing association or another organization that provides operational services to your home.

General recommendations

To eliminate the reasons why the washing machine beats current, it is necessary:

• When operating a three-wire line, check the integrity of the circuit of the protective earth used. To do this, you need to check with a multimeter, whether there is voltage between the phase and the walls of the unit.
• When using a two-wire line, a potential equalization system and grounding for the device can be organized.
• If grounding is not possible, it is necessary to organize a system of potential equalization, and to include in the circuit of the device an RCD calculated for no more than 30 mA.

Before using these methods, make sure that the unit is functional, because if the insulation is lost in it and the phase is on the wall, these methods will be ineffective, and the installed RCD simply will not allow the machine to work. Therefore, when there is a sudden appearance of blows from the side of household appliances, first of all, conduct a thorough examination of it for any malfunctions.

Do not forget to check the work of other components

Also this unit starts beating when one of the devices grounded on the product body breaks. And if you suddenly felt that your machine started to "fight", you will need to check the following devices:

• Heater (heating element);
• engine;
• Pump (rarely);
• network filter;
• Command vehicle (rarely)

Trying to understand why the current machine beats, you can try to swap the phase and zero, which requires you to put the plug in the power outlet in a different way. Often, this option gives a result, especially when the insulation of one of the wires against the load was broken (if the wire is zero, you will not feel anything, and if the phase, then you risk getting a blow).

The same measures are recommended to be carried out and in the event that it is noticed that your dishwasher is beating current.

It must be remembered that you can not use it when grounding a washing machine for a heating pipe. Also, it is strictly forbidden to take a bath at the moment when the washing process is in progress, it is dangerous for life.

If it is found that during the operation of the unit it started to "fight", disconnect the device and check for any damage on the ground wire. If you find a defect or a break, then the question why the current beats the machine, disappears by itself, and you can eliminate this problem yourself. If you do not have the necessary knowledge in the field of electrical engineering, it is not recommended to carry out repair work on your own, as this can lead to critical breakdown of machinery and harm your health.