Is there a resistance on the neutral wire, the resistance between the neutral wire and the ground wi

There must be, because it is a wire, and any wire has resistance, but it will affect its resistance value per unit length due to the material relationship of the wire.

The zero line is said relative to the line of fire.

The neutral line is the line drawn out of the neutral point of the transformer, and the phase wire forms a loop to supply power to the electrical equipment. With voltage, electrons flow through the wires to form an electric current. It's the same as the principle that water flows from high to low.

Water does work in the process of flowing, and electricity does work in the process of flowing. When an electric current passes through a wire with a thin wire diameter and high resistance, a traffic jam may occur, resulting in heat generation. The tungsten filament of electric lamps can withstand high temperatures, and the tungsten filament emits light when it is hot.

AC power cords are divided into neutral and live wires. The neutral line is always equal to the potential of the ground (but this does not mean that the potential of the ground is necessarily low), and the live wire maintains a sinusoidal oscillating voltage difference between the neutral wire. Because there is zero potential difference between man and the earth in the natural state, under normal circumstances, people will not be shocked when they touch the neutral line.

This is the reason why you can protect people from electric shock by connecting the shell to the neutral wire with an electrical appliance (connecting it to zero). Therefore, the fire wire and the neutral line are reversed, which will bury the potential safety hazards of electricity use, and it is generally necessary to strictly distinguish them.

There are two lines in the house: the neutral line and the live line.

Do you think that the zero line is the line with zero resistance?

Students, physics is related to everyone's lifeblood, you must study hard!

How could it not be, and it is not a superconductor.

Abnormal. 1. When there is no load between the live wire and the neutral wire, the resistance should be infinite, and the voltage level is 220V.

2. If there is resistance between the neutral live wire, and the resistance value is very low, it means that there is a virtual connection between the live wire and the neutral wire.

3. The resistance between the live wire and the neutral wire will trip the leakage protection zone.

4. The resistance between the live wire and the neutral wire will produce a voltage drop.

5. The resistance between the neutral line of the live wire is the possible aging of the wire.

The resistance between the neutral and ground wires should be greater than 3 megaohms.

The neutral line is mainly used in the working circuit, which is the line drawn from the neutral point on the secondary side of the transformer, also called the neutral line, which means that the voltage of the differential type staring line is zero. The resistance between the neutral and ground wires should be greater than 3 megaohms, that is, the resistance between the neutral and ground wires is allowed to be 3 megaohms, the greater the better.

Difference Between Neutral and Ground:

1. The functions are different.

The neutral wire is mainly used in the loop, connecting the live wire, and carrying the current, whereas the ground wire is mainly the protection wire and does not carry any current.

2. The wiring position is different.

The neutral wire is the center point of the transformer that is grounded before the wire is pulled out. The ground wire is pulled out and repeated at 20m intervals during the building grounding installation.

3. It is different from ground potential.

The zero-to-ground position of the zero wire is not necessarily zero, whereas the ground-to-ground potential of the ground wire is zero.

Matters to be noted for the connection and use of household wires:

1. The wire connection should not be wrong.

In the process of connecting the live wire, the neutral wire and the ground wire, there can be no connection error, otherwise it is easy to have potential safety hazards, which directly affects the safe use in the later stage.

2. Do not touch electricity with metal.

We all know that metal objects are electrically conductive, so no matter when anyone can use metal objects such as screwdrivers or nails to touch the power supply to avoid electric shock.

3. Do not open for a long time.

Household appliances should not be turned on for a long time, otherwise it is easy to cause the circuit to deteriorate and cause potential safety hazards. If precautions are not taken, dangerous accidents can occur.

4. Do not disassemble by yourself.

If the electrical appliances of your virtual home fail, you need to go to a regular repair shop for repair, and you can't repair and replace them privately, otherwise they will not be repaired, and they may not meet the requirements, and there will be potential safety hazards when using.

5. Unplug and hold the plug.

Some people do not hold the plug with their hands, but directly hold the electric rental cable and pull it out, which is a very dangerous thing, and if the cable is aged, it is likely to cause electric shock.

6. Replace wires in time.

In ordinary times, once a problem is found in the power supply, it should be replaced immediately, and it is not appropriate to dispose of it and continue to use it by yourself, and it can be replaced after wrapping it with insulating tape. <>

The resistance of the neutral and ground wires should be greater than that of the non-attack.

The greater the resistance value between the ground and neutral wires, the better, and the minimum should not be less than the megaohms, and the minimum between the neutral and ground wires should not be less than the megaohms. The resistance value between the neutral wire and the ground wire should be divided into two cases, the smaller the TN system, the better, the minimum can not be greater than 4 ohms, and the TT system, the neutral grounding resistance is not greater than 4 ohms, the ground wire is separate, the grounding resistance can not be greater than 4 ohms, and the resistance value between the zero ground cannot be greater than 8 ohms.

The difference between the neutral wire and the ground wire.

The neutral wire is the line drawn from the transformer, and its voltage is zero, mainly acting in the circuit, and the ground wire is used in the whole circuit to protect, especially when using the key boss electrical appliances, it is required to be grounded.

Ground and neutral are completely different concepts. The ground wire is only used to protect electrical appliances, and no current flows through it. According to national regulations:

The shell of household appliances must be connected to the ground wire, when the electrical appliances leak, the ground wire will turn the current to the ground, so as to protect the human body and avoid electric shock. <>

Summary. The resistance between the neutral and ground wires should generally be very low, close to zero ohms. This is because the neutral and ground wires have different functions in the circuit.

The resistance between the neutral and ground wires should generally be very low, close to zero ohms. This is because the neutral and ground wires have different functions in the circuit.

The neutral wire is often used as a return line in a circuit, while the ground wire is used to establish a safe ground. Therefore, they should have good electrical connectivity to neutral (often power supply) and ground contacts (e.g., the ground of a building with a rock bend) in the circuit, respectively.

Under the right Iwano-saki conditions, they should hardly have resistance. However, if resistance is present, it may be due to problems such as poor contact, corrosion, or loosening of wire plugs, sockets, or connectors. In this case, the affected parts need to be repaired or replaced to ensure the safety and reliability of the circuit.

Rough and noisy. Both the ground wire and the neutral wire are important components in the circuit, and their role is to ensure the safe and reliable operation of the circuit and protect personal safety.

<>1.Safe use of ground wire: The ground wire is used to protect the safety of people dismantling their heads and bodies, and is generally used to ensure that the metal shell of the equipment has a good grounding connection with the ground.

When using the ground wire, the following points should be noted: (1) The ground wire joint should be firm and reliable, and there should be no loosening or falling off. (2) The ground wire should be connected to the grounding wire or grounding conductor, and should not be connected to the pipes such as water pipes or gas pipes.

3) The ground wire should be laid separately from the power line and signal line, and avoid interference with other lines.

<>2.Safe use of neutral wire: The neutral wire provides a circuit for the circuit, which is generally used for the wiring board or plug on electrical equipment, mainly used to protect personal safety and the normal use of the equipment of the megab.

The following points should be paid attention to when using the neutral wire: (1) The neutral wire joint should be firm and reliable, and there should be no loosening or falling off. (2) The neutral wire should be placed separately from the grounding wire to avoid mutual interference.

3) The cross-sectional area of the neutral line should be in accordance with the regulations and should not be too thin to ensure the normal circuit of the circuit. The use of ground wire and neutral wire should comply with relevant national safety regulations to ensure safety and reliability.