Remember these three lines, never get electrocuted|Jiangmen Licheng Technology Co., Ltd.

Ordinary people spend more time at home. To ensure that the whole family is not electrocuted, it is important to remember three lines

It's three defenses! Can ensure that we are protected from the risk of electric shock. But many people are not quite sure:

1. Direct touch electric shock protection

2. Grounding and equipotential combination

3. Remaining current action maintainer

The first line of defense: direct touch and electric shock protection.

This name may sound like a huge object, but the principle is quite clear: the methods to avoid touching charged bodies all belong to direct touch and electric shock

Protection. The outer skin of wires, the panel of sockets, and the shell of household appliances all belong to this field.

It may sound like there is no technical content at all, but this is precisely important maintenance. Electric shock, if you can't touch it, there will be no electricity (of course)

Someone is using step voltage or something to argue, and I can't do anything about it. I just want to ask who has a 10kV high-voltage line directly connected to their home. Direct touch

Electric shock protection is a basic and commonly used protection, while other defenses are added to compensate for and ensure safety after the failure of this defense

way.

How can ordinary people defend the top line of defense on the leaderboard? There are the following suggestions:

When the outer skin of electrical wires or plugs is found to be damaged or the shell may break, please stop using them and repair or replace them in a timely manner;

Select socket panels and power strips with maintenance doors

A socket with a maintenance door, if only one hole penetrates an object, the stopper inside the socket will not open. This is more important for families with children

It can effectively prevent children from accidentally inserting their fingers into the socket.

However, it should be noted that some unscrupulous manufacturers produce counterfeit and inferior products with fake maintenance doors, which can be easily maintained with minimal effort

Insert it. When we are making a purchase, we may want to experiment by poking it with a key or screwdriver (of course, when it is not electrified)

There's no need for me to remind you. Let's see if the maintenance door is useful.

Second line of defense: grounding combined with equipotential

When designing the electrical system of a residence, any metal casing of electrical appliances (including lighting fixtures) that may be touched by the human body must be connected to the ground wire

It will pass through metal objects such as steel bars of the building itself and be connected to the ground. In this way, it can ensure that once the metal shell is charged, it can pass through quickly

The ground wire flows into the earth to avoid accidents.

Furthermore, touching high voltage does not necessarily result in an electric shock. As long as the voltage in different parts of the human body is not the same, current will flow through

Only the human body can be at risk. That's why the birds on the high-voltage line and the people in the Faraday cage are safe and sound.

Through grounding and equipotential, it can be ensured that there will be no voltage difference between different parts of the human body even when touching a charged metal shell, thus avoiding

Avoiding electric shock incidents.

How to defend the second line of defense? There are the following propositions:

When carrying out circuit renovation during decoration, it is necessary to install a grounding wire. Some decorators intentionally reduce grounding wires in order to save effort or money, which is not acceptable

responsible. Every electrical circuit, including lighting circuits, requires a grounding wire;

Some unscrupulous manufacturers, in order to save costs when producing socket panels and power strips, will use thinner copper wires to make ground wires or even bases

When choosing a ground wire, we must not be tempted by cheap options;

Please pay attention to the equipotential bonding of the bathhouse during decoration:

When it comes to the bathhouse list, the top spot is due to the use of high-power appliances such as water heaters, bathroom heaters, heaters, and hair dryers in bathhouses

The second reason is that in a humid environment, the resistance in the human body will decrease. If unfortunately touched with the same voltage, it is more likely to occur in a humid environment

Risk. Based on these two reasons, partial equipotential bonding should be performed in clean rooms with showers or bathtubs.

Generally, some equipotential terminal boards are reserved in bathhouses. When decorating, we can refer to the following diagram to achieve partial equipotential bonding:

The third line of defense: residual current action maintenance device

Where should there be electrical leakage maintenance in home decoration? In this question, I am concerned about the remaining current operated maintenance devices (commonly known as residual current switches or leakage switches)

There has been a special introduction on electrical maintenance:

Leakage maintenance device and leakage switch are relatively old terms, and the current standard name should be "residual current action maintenance device", abbreviated as RCD

. RCD is not used alone, but in conjunction with a circuit breaker (commonly known as the "electric switch"). Ordinary household belts

The circuit breaker of RCD is as follows:

All socket circuits should be equipped with RCD at the distribution box. If the wall mounted air conditioner is powered by a dedicated circuit, due to the socket of the wall mounted air conditioner

Often set relatively high (about 2 meters), it is possible to avoid setting up an RCD.

The lighting circuit can be without RCD, but during decoration, some electricians may use the lighting circuit to supply power to newly added sockets in order to save effort

Not advisable!

Some smaller units do not have a dedicated cleaning room socket circuit, and the power supply for the cleaning room bathroom heater comes from the lighting circuit. In this case, it is easier to supply the lighting circuit

Install RCD.

There is always one principle to follow: if there is a possibility of touching the circuit while it is live, an RCD should be installed.

A typical home distribution box is like the one shown in the picture, with the main incoming switch (commonly known as the "main switch") on the left and the narrow ones on the left not installed

The RCD circuit breakers are for lighting, distribution box, lighting backup, and hanging air conditioning. The wider ones on the right are the ones equipped with RCD circuit breakers

Don't use regular sockets, kitchen sockets, cleaning room sockets, and cabinet air conditioning sockets.

The only drawback of a circuit breaker with RCD is that it is twice as wide as a circuit breaker without RCD, with the former being 36mm and the latter being 18mm. If the circuit is compared

If there are too many, the area of the distribution box will be relatively large, which will affect its appearance. In addition, the price of circuit breakers with RCD will be slightly higher. But compared to life safety

This flaw can be easily overlooked.

The three ways to prevent electric shock incidents in ordinary residences are closely related to our life safety. When we decorate, choose electrical appliances, and

On ordinary days, one must not neglect the above for the sake of cheapness or saving energy. It should be noted that safety is not a trivial matter, and it is never wrong to pay more attention to it.

Reading source: SMC molded products www.jmlicheng.com