- What is the meaning of grounding
- Grounding under different conditions
- Grounding cable
- What you can not do when grounding
The most correct way to protect the washing machine, is its grounding. So you protect yourself and extend its service life for many years. However, many people buy this device and do not think about it, but grounding is also mandatory, as well as connecting the water supply, and other similar things that ensure the operability of the unit. In this article we will explain how to ground the washing machine yourself.
What is the meaning of grounding
Any machine connected to the network without grounding carries a certain amount of danger, since residual voltage appears on its case, which can be felt by touching it during operation. In the event of damage to the insulation of the wires inside the machine, it can occur, so that the casing will take over the so-called “phase”, and a full-fledged voltage of 220V will appear on it, and since the machine is installed mainly in bathrooms with a moist environment, This unit without grounding becomes dangerous to human life.
Among other things, grounding saves home appliances from mains power surges. Therefore, this operation to ensure the removal of excess voltage, can save your life and ensure the efficiency of the device for many years.
Grounding under various conditions
Some of us live in high-rise buildings in ordinary apartments, and others in private homes. Below will be described how to properly ground the washing machine, if there is no grounding :
In the first case, consider how to properly ground the washing machine in the apartment. It all depends on the time of construction of the house where you live. In the "New Buildings" problems with the grounding of household appliances should not be, because when they are designed, the calculation is based on grounding. This cable is already provided in the mains. However, if you live in a house of “Soviet times”, such a system is not provided here, and there are two options for the development of events - 1) two buses are installed in an electrical panel, one of which is grounding and the other is zero, and from them there will be a branching wiring tovarious instruments.2) this method is more complicated. From the outlet in which you turn on the washing machine, you lay a special three-core cable with a copper section, then you will need to connect the wires as follows:
- connect the neutral wire of the cable to the zero bus;Connect the
- phase conductor via the RCD and the circuit breaker to the corresponding branch( phase conductor from the meter);
- ground wire connected to the PE bus. Remember the most important thing - in no case do not connect this wire to the zero phase!
There are also houses where there is no ground cable at all. In this case, it is better to use moisture-proof sockets, or to completely remove the washing machine from the bathroom.
In a private house, the principle of grounding is similar to the apartment method, but there is one difference, the grounding ground must be made by oneself. Now let's take a closer look at this process:
- for this, you need 3 metal pipes of approximate length up to 3 meters, at least 5 meters. The length is calculated depending on the freezing of the soil in the winter time;
- “sharpen” the lower parts of pipes by hammering their edges with a sledge hammer;
- we dig a small hole to a depth of 5 meters, and there we drive pipes into the ground, leaving them stuck at a height of 15 centimeters;
- further, with iron plates or medium-diameter fittings, we connect the pipes between the failure triangle with the help of welding. Pulling the wire out, dig in a hole;
- we attach to the plate the ground wire and conduct it to the house to the place of installation of the meter.
Next, lead the wire to the outlet where your washing machine is turned on, or attach it to the unit's bolt on the bolt.
Grounding cable
In order to properly conduct the grounding for the washing machine, you need to understand the cables themselves for grounding. These products are divided by color in order not to be confused about what it is intended for. Now for the colors themselves:
- red color - phase cable;
- blue wire - zero wire;
- yellow with green - ground cable.
Also cables are colorless or white, in these cases, the ground will be in the middle. Thanks to this color coding, it is more difficult for masters to make a mistake during a grounding installation.
What you can’t do when grounding the
Absolutely any unit is followed by an instruction that describes how to properly ground the washing machine, in which all actions and methods for connecting it are described step by step. Let us proceed to what is absolutely forbidden to do when grounding:
- in any case do not connect grounding to pipelines of any type;
- is prohibited from bringing ground cables out and connecting them to the grounding bus at sites that are not adapted to this. This is because the metal will be affected by moisture, which causes corrosion and tire resolution, and when it expands on the outer covering, any, even a minor accident, can cause the grounding cable to burn;
- it is forbidden to make a serial connection of electrical appliances, and you can not connect more than one conductor to the contact grounding area. In the first case, electromagnetic incompatibility and the appearance of interference is possible.
If you are going to make yourself grounding, then consider the above rules and try not to make mistakes, it is best to seek help from the masters.
We told you about ways to ground the washing machine in apartments or private houses. All methods are legal and safe to use.