What is the reason for the zero line to burn out, what is the reason why the TV will not burn out af

This indicates that the load is too large and exceeds the allowable current value of the neutral line.

Solution:1

Reduce load capacity.

2.Replace the neutral wire with a large capacity (increase in the cross-sectional area of the conductor).

The TV will not burn out after the zero line is broken. But the load doesn't work.

The situation of burning the zero line is generally rare, in the 380V system is generally caused by the three-phase is the flow imbalance, in the 220V system the zero line current and the live wire current is the same, if the wire diameter and quality are the same, that can only be explained.

The neutral wire is not handled well when wiring, etc

There are probably several reasons for the situation of the zero line being burned, one is that the three-phase power supply is unbalanced, which makes the zero line current too large, because under normal circumstances, the zero line is thinner than the live wire. There is also a situation that the zero line has not been checked for a long time, and the crimping line is loose, so that the contact is poor and the heat burns out. After the zero line is burned, the consequences are very serious, it will make the single voltage of the home change, or high or, (it may reach two hundred and sixty seven or one hundred and fifty-six, which is caused by the neutral point deviation after the zero line is broken, and the voltage is determined by the size of the phase load) It is easy to burn electrical appliances, when the voltage fluctuates greatly, such as the voltage has 220 to 140 and then back to 220V, the air conditioner has normal operation and becomes abnormal, which is generally caused by poor contact with the zero line, Especially in the summer, watch out for this to happen.

Hello (1) When the three-phase load is seriously unbalanced, the zero drift phenomenon occurs, and the zero line current is too large or the cross-sectional area of the zero line is too small, resulting in the zero line being burned off.

2) Poor contact or virtual connection at the zero line joint will cause sparks, and for a long time, it will cause the zero line to break the circuit.

3) The neutral line binding post of the distribution transformer is not in good contact with the conductor, and the maintenance is not in place, which leads to the zero line breaking.

4) The three-phase four-wire line is equipped with a fuse or a separate switch on the neutral line, and the fuse blows or pulls the switch, resulting in the zero line breaking.

5) When disconnecting the three-phase four-wire line, first disconnect the neutral line.

6) Zero line disconnection caused by other faults, such as wind blowing off the zero line, vehicle collision with electric poles, pulling wires and other reasons.

Legal Analysis:1The erection of high and low voltage poles causes overvoltage due to the disconnection of high-voltage lines to low-voltage; 2.

Overvoltage due to the wrong line connection for power construction; 3.If the overvoltage is caused by the disconnection of the zero line, and the burning of residents' household appliances due to these three circumstances, the property owner (power supply bureau) shall be responsible.

Legal basis: Civil Code of the People's Republic of China

Article 120:Where civil rights and interests are infringed upon, the infringed party has the right to request that the infringer bear tort liability.

Article 183:Where oneself is harmed by protecting the civil rights and interests of others, the infringer bears civil liability, and the beneficiary may give appropriate compensation. Where there is no infringer, the infringer has escaped, or is unable to bear civil liability, and the victim requests compensation, the beneficiary shall give appropriate compensation.

Article 1167:Where the tortious conduct endangers the safety of others' persons or property, the infringed party has the right to request that the infringer bear tortious liability such as stopping the infringement, removing obstructions, or eliminating dangers.

Article 1168:Where two or more persons jointly commit tortious acts, causing harm to others, they shall bear joint and several liability.

If the main neutral wire is broken, it may burn the electrical appliances, we know that the voltage before the three live wires is 380V, which we call the line voltage, and the voltage between any live wire and the neutral wire is 220V, which we call the phase voltage. The electricity we usually use at home is 220V, but when the power supply bureau supplies power, the main line is three-phase and four-wire.

For example, there are three houses that need electricity, and in order to balance the three-phase current, these three live wires will be used for the three houses, phase A for room A, phase B for room B, phase C for room C, one for each of the three live wires, and only one for the zero line is for the three houses.

Once the main zero line is disconnected, these three live wires are connected to each other through the electrical equipment with their respective belts, and are connected in series into a circuit with a voltage of 380V.

Why is it that when the zero line is broken, household appliances will burn out?

Hello dear, it's not that the zero line will burn out the household appliances if it is broken. If the zero line of your home is broken, it will definitely not burn out the appliances. This problem refers to the fact that in the three-phase four-wire low-voltage line, the neutral line contact resistance is too large, resulting in phase deviation, so that the voltage of 220V is greatly increased to 300V on the single-phase line with a relatively light load, so the household appliances on this line will be burned out by overvoltage.