What happens to the live and ground shorts?

The live wire is best connected with the zero wire, since the effect is obvious, the second is to use safety, the live wire and the zero wire are connected together to achieve the same effect, but it is not obvious, and it is very unsafe, there is a step voltage within a certain range around the vertical ground at the junction with the zero line of the live wire, if you do not do a good job of strict insulation prevention, it is easy to be electrocuted, if the air and the ground are too wet, the range of the step voltage will increase, it is very dangerous to people, so the main role of the grounding wire is to prevent leakage of various electrical appliances, It is generally not advisable to use the live wire to connect the bottom line directly, of course, if you just have the idea of trying it, you can reluctantly carry it out under the premise of doing a good job of insulation protection, but you must pay attention to the safety of electricity!

Yes. Generally, the air switch will be turned off within seconds when the current is too high, although it is a second, but it is enough to burn the electrical appliance.

In addition, when the live wire and ground wire are shorted, a high-temperature arc will be emitted, which is very unsafe

o(> oDon't.

The test switch can put the wire on the ground. Don't connect two wires together. As soon as the switch is grounded, it will trip!!

Short circuit! Don't your switches have a test button??? If there is no circuit breaker, the circuit breaker does not allow short circuit test jump!

In serious cases, it will trip or burn the wire, and there is a risk of sparks in the event of a short circuit.

In short, you can use it with confidence, and if it doesn't work, add a leakage protection.

The connection of the live wire and the ground wire is a sign of a short circuit (or leakage). It's better not to do that!

This is not allowed

It will cause a short circuit and the wire will burn.

This time it will short circuit, burn the fuse, and burn the electrical appliances, so be careful.

Well, agree with the upstairs. The wire used for the connection will burn out.

1. The live wire and the neutral wire will be short-circuited together, and the ground wire can not be connected to the neutral wire. When the neutral line fails, all equipment housings will become energized (even if the normal consumer is no exception). If a leakage circuit breaker is installed, the hybrid is a leakage switch that trips.

2. Neutral line: The general industrial electricity is three-phase sinusoidal alternating current, and their phase angles are 120 degrees different from each other. Power transmission is usually in the form of three phases and four wires, and we connect the tail ends of the three phase windings of the transformer together, which is called the neutral point, and the line leading out of the neutral point is the neutral line (neutral line).

3. Ground wire: We usually ground the neutral point of the power supply, and then draw out a protective wire from the neutral wire and repeat the grounding, which is called the ground wire. The function of the ground wire is to reliably connect the metal shell of the equipment or electrical appliance with the earth, and protect the human body from electric shock when the electrical equipment fails and the metal shell is accidentally electrified.

Reason: The neutral wire and ground wire are reversed, and the electrical appliance is connected between the live wire and the ground wire, resulting in a current in the ground wire.

There is a current generation in the grounding wire, and the specific reason depends on the structural layout and wiring of the neutral line, and the cause must be checked and eliminated one by one. According to the estimation analysis, the causes of the current may be as follows:

1. There is leakage in a certain part of the equipment, that is, there is a certain on-resistance value between the phase wire and the ground wire, which leads to the generation of loop current between the ground wire and the live wire.

2. If the ground wire and the power neutral wire are connected together, the situation becomes more complicated, when the main circuit of the power supply is high load and large current, because the main circuit wire is too long, or the cross-sectional area of the wire is small, the line voltage drop is too large, so that the zero line to the ground potential is not zero, and if the zero wire and the ground wire are connected together, the ground wire will inevitably have a loop current.

3. Whether the equipment shell is in contact with a live part inside due to deformation, and the equipment shell is generally connected to the ground wire, and the ground wire generates loop current because the equipment shell contacts the internal live part.

4. Due to the leakage resistance between the neutral wire and the ground wire (that is, the neutral wire and the ground wire are not connected together), due to the high load and high current of the equipment, the potential of the neutral line to the ground is not zero due to the voltage drop of the line, and the existence of the leakage resistance value between the zero ground, so that there is a loop current in the ground wire.

Whether the contact between the live wire and the ground wire will be short-circuited or not, this question cannot be generalized.

If the ground wire is only grounded, even if the live wire and the ground wire are in contact, only a current is formed to the ground, and if the current is not large, it will not be regarded as a short circuit. The current at this point is actually a leakage current, which can only cause tripping in the line equipped with a leakage protector.

The situation is different for the ground wire that is grounded and zero, once the live wire and the ground wire are in contact, a short-circuit current will be formed, as long as the line is equipped with an empty open, regardless of whether it has leakage protection or not, it will generally trip. In a line where there is no open space, a short circuit can cause a major accident.

<> "1. What will happen to the grounding wire of the live wire.

The ground wire also allows the appliance to operate, but its resistance is particularly unstable. If its resistance exceeds the resistance of the zero line, the voltage of the electrical appliance will be particularly unstable, which will cause certain damage to the electrical appliance, and the low voltage may affect the normal use.

Second, what are the areas of aluminum wire and copper wire?

1. The weight of aluminum wire is not the same as that of copper wire, the weight of copper wire is much larger than that of aluminum wire, and the density of copper wire is also greater than that of aluminum wire. And the color of aluminum wire and copper wire is also different, copper wire is purple red, while aluminum wire is gray and white. Their ** is also different, the ** of copper wire is much higher than that of aluminum wire, because the manufacturing process of aluminum wire is very simple, so its ** will be relatively low.

2. And the stability of the two of them is also different, and the safety performance of copper wire is very high. The aluminum wire will have the phenomenon of oxidation, and in the case of long-term use of the closed section, the aluminum wire will have certain potential safety hazards, and if it is not replaced in time, it is likely to damage the entire line.

3. How to choose wires.

When selecting wires, we must select according to its packaging, first of all, we must see whether it has 3C certification on it, and see whether it is engraved with the corresponding specifications, models, etc. And whether the name and address of the factory produced on its packaging are relatively clear. It is not possible to make a purchase without these signs.

And when you buy it, you must take a look at its insulating rubber to see how the quality of the rubber itself is, if you squeeze it by hand, it has a white powder that falls, it is also not possible to buy, because this kind of wire is of inferior quality.

1.The role of the live wire and the ground wire.

In the power system, both the live wire and the ground wire are very important elements. A live wire is a line where electricity enters a home or office, while a ground wire is a protective conductor that connects the power system to the ground. Both play different roles to ensure the normal operation of the power system and the safety of users.

2.The danger of live and ground wires.

Both the live and ground wires are electrified, so if they are not properly connected, they can cause a short circuit in the circuit or even cause a fire or**. If the ground wire is broken or damaged, it increases the risk of electric shock. Therefore, proper wiring and installation is very important and requires guidance and assistance from professionals.

3.The hazards of incorrect wiring of the grounding wire of the live wire.

If the live and ground wires are wired incorrectly, the current cannot be effectively controlled and directed, increasing the risk of electric shock to the user. In addition, this kind of error can also make the electrical equipment not work properly, or damage the equipment, or even cause disasters or accidents, which brings a serious threat to personal safety and property.

4.How to wire it correctly.

The premise of the correct wiring is to follow the national electrical safety codes and requirements. First of all, you should find the power inlet and switch box of the residence or office, as well as the distribution box; Secondly, professional electrical cables should be used to wire correctly, and it must be ensured that the live wire, neutral wire and grounding wire correspond to each other; Finally, commissioning and testing are required to ensure the proper functioning of the power system.

5.Other things to look out for.

In addition to wiring correctly, there are a few other things to look out for. For example, do not use electrical appliances with damaged wiring, and do not use electrical appliances in a humid environment; Do not place electrical appliances near flammable and explosive materials; Keep young children out of contact with sockets, appliances, etc. Only by following these rules can we be safe.

6.Conclusion.

In the power system, live and ground wires are essential elements in our lives. Proper wiring ensures our safety and the normal operation of the power system. Therefore, we should focus on electrical safety education and guidance to avoid dangerous accidents.