How do household appliances such as refrigerators be grounded?

These equipment and appliances that need a grounding wire generally use a three-post plug, one of which is the ground wire, if this connection must be guaranteed.

1.The wall socket is three-pronged with a ground wire.

2.From the socket to the electrical device, all intermediate strips must be three-wired.

If you are not sure whether the wires laid indoors contain ground wires, or the equipment uses a two-post plug but wants to connect an extra ground wire, the work that needs to be done:

1.Look for the device housing to see if there is a suitable nut to loosen 1-2 buckles.

2.Look for indoor or outdoor metal pipes that can be directly grounded, such as metal sewers, heating pipes, etc., if necessary, polish the surface to make sure it is connected to the metal (it is really not possible to smash the wall skin and connect it to the steel bar inside, if there is, hehe!). ）

3.Find a wire to connect both ends, OK

General large appliances, such as refrigerators, washing machines, air conditioners, televisions, computers, etc., have three-pin plugs, one of which is a slightly longer hole is the grounding wire, when connected to the matching three-prong socket, first grounding wire to form protection, and then turn on the power to prevent short circuits, higher safety performance, small household appliances are not equipped with three-pronged sockets, household appliances will inevitably be worn out for a long time, or bad discharge, if you find that the power cord or plug cover is damaged, you should pay attention to whether there is leakage, you can use a special black tape to wrap the damaged parts tightly to prevent leakage.

If the three-pin socket at home is already grounded, just plug the refrigerator in. If there is no socket and there is no grounding, the grounding screw on the machine can be connected to the outdoor grounding wire with a copper wire.

Nowadays, large household appliances are three-phase electric wiping heads, and there is no need for a single grounding wire. Even if you have a strong inner wire and no grounding wire, the appliance itself has self-protection, so don't worry.

The power supply of household appliances is changed to three-phase electricity, and there is no need to be grounded separately.

The grounding wire is very necessary, a simple way to connect the ground wire when making a plug-in board, connect it firmly, and ground well, otherwise, there will be static electricity that will affect the machine, like some machines such as computers must be grounded, otherwise there will be strong static electricity, and people who are not clear think that there is also leakage.

The design of the refrigerator is not grounded, the plastic shell is non-conductive, there is no need to install the grounding wire, the grounding wire inside the refrigerator is on the power plug, and the longer one on the triangle plug is the grounding wire.

As long as the power socket you are using is three-wire, and all three wires are connected, the refrigerator does not need to be connected to a separate grounding wire. In today's housing, the power lines in the house are single-phase three-wire systems: live wire, neutral wire, and ground wire.

There is generally no ground wire in the old house, but the ground wire has been installed when the meter is renovated. If you don't have an electricity meter out of the house, you have to add your own ground wire, not only refrigerators, washing machines, air conditioners and other white goods and computers, but also ground wires. It is necessary to drive the angle iron of more than 1.5 meters underground in the damp place against the wall outside the ground floor, and then lead out the ground wire to enter the house as the ground wire.

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A class of electrical appliances must be grounded when in use, this is because a class of electrical appliances is generally strong electricity. If the insulation fails, and the user's home power supply does not have an effective leakage, overload protection device.

If the power cannot be automatically cut off, it will cause certain dangers to the human body. Therefore, as a class of electrical appliances, refrigerators must have reliable grounding, otherwise once its own insulation fails, there is a risk of electric shock. When using, do not remove the grounding socket of the power supply, so it is very important and necessary to install the grounding wire.

On the three-core plug of the refrigerator, the longest metal piece is the grounding protection. If the grounding wire is separated, it can be grounded from the metal chassis screws of the refrigerator due to one wire.

The ground wire on the refrigerator can be directly fixed to the metal shell under the back of the refrigerator with screws.

If the power plug of the refrigerator is damaged and needs to be replaced with a new plug, you can connect it according to the following **, the brown power cord is the live wire, the blue wire is the neutral wire, and the yellow and green two-color wire is the ground wire.

The refrigerator plugs are all designed with a three-prong plug with a ground wire, and there is no need to connect the ground wire separately, as long as the socket has a ground wire.

How to connect the ground wire of the double-open refrigerator? I'll come to this question. This is the appliance you use in your home. Household appliances.

Hello, I will answer for you about how to connect the ground wire of the refrigerator, how to connect the ground wire, I believe that many friends do not know, now let's take a look! 1. You can use an angle iron of more than one meter to hit at the foot of the wall. <>

1. You can use an angle iron of more than meters to drive into the ground at the foot of the wall, and then lead out the ground wire.

2. Where the silver cover is the use of three-pin power plug electrical appliances, the ground wire must be properly grounded, the current newer housing, the power line is single-phase three-wire, has been connected to the ground.

3. Old-fashioned housing is generally only a single-phase two-wire system, and there is no ground wire introduced into the room.

4. The method of extending the data to determine whether the circuit at home has a grounding wire: Look at the incoming wire of the meter box: if it is three wires through the pipe into the switch box, one of which is a yellow and green line, that is the introduction of the grounding wire at home, it is not connected under the circuit breaker or under the gate knife, or under the fuse, but directly from the grounding pile or grounding row into the switch box.

Remorse burns. Measure with a multimeter: Measure the upper hole and right hole of the three-hole socket with a multimeter, if the meter shows a voltage of 220V, it means that the home is connected to the ground wire.

6. If the voltage is 0, then there is no grounding wire in your home.

If the refrigerator power cord plug is self-contained with leakage protection, it is not a big problem. Xunsen.

If it is not a power plug to be leaked protection, it is necessary to draw a ground wire from the power socket of the refrigerator to the ground wire of the stall cavity of the main power to ensure safety.

Emergency measures, you can also make a hole in the ground at a suitable location, pre-embed a metal rod, and pull a grounding wire to the refrigerator power socket.

But this method can only be an emergency measure, because its grounding is unreliable and there are large safety risks.

The refrigerator uses electricity, and electricity cannot be seen or touched. In case of electric shock, it is lucky that the current is small, but if the current is too large, it will endanger people's lives.

In order to ensure personal safety, people have added a third wire to the refrigerator - protective ground wire, referred to as ground wire. One end of the ground wire is connected to the shell of the appliance, and the other end is connected to the ground electrode buried in the ground.

In this way, when the insulation inside the refrigerator is damaged, the electricity flows from the ground wire into the ground, and people do not have to worry about electric shock. But some people may say, "I've seen a lot of electrical appliances, but I've never seen any wires connected to the ground?"

Grounding wires, instead of connecting a wire from each appliance and burying it underground.

Most refrigerator jacks have three pins, one of which can be connected to the ground wire, this ground wire is installed in advance, maybe a building only needs a ground wire, and other electrical appliances are connected to this ground wire.

At the same time, the shell of the refrigerator is generally equipped with a grounding device. When using electrical appliances, as long as you plug in the three-pin plug, it is grounded. So, it looks like the appliances are not grounded, but they are actually connected for a long time, but not all appliances need to be grounded.

For example, the TV does not have to be grounded, because the metal parts that can be touched by people on the TV are not connected to the case, if the TV of this structure is connected to the ground wire, once the power plug is reversed, it will make the case live and cause danger.