The house didn t trip, but suddenly there was no power

There are many reasons why there is no electricity at home, electric switch.

It is only one of the reasons, if there is no leakage or overload, the electric switch will not trip.

Check it as follows:

1. Check the power fuse.

Whether it is broken or not, sometimes although there is no overcurrent and overload, the fuse is not in good contact, resulting in contact resistance.

As it grows, the accumulated heat also increases, blowing the fuse.

2. Check whether the wire contact screws introduced from the meter into the home are loose. If the contact screw of the wire is loose, the joint may be oxidized over time, resulting in poor contact and no power at home.

3. In the same way, check whether the wire contact screws introduced into the meter are loose.

4. The current coil inside the meter is broken or the contact is not good.

There are several situations where there is no power and suddenly there is no trip, one, the power grid outside is out of power, this can be verified with the neighbor next door, two, you are using a paid smart meter, the meter is out of power because of arrears, this can be queried, three, there is a problem with the wires at home, the joints of the wires are disconnected or the wires are broken, four, the quality of the gate knife is not good, the gate knife has not tripped, but the inside of the gate knife is not through.

When the smart meter is in arrears and has a power outage, what can be seen is that all the gates are closed. This will be displayed in text on the meter. The zero ground wire copper bar in the air switch box is burned, and this can be detected by using a voltage tester on any circuit in the home to detect that the live wire is electrified.

If there is no electricity, it is the first. In front of the air switch box, the meter is lower, and an air switch jumps, and there is no electricity at home, and the electric test pen can't find electricity.

Use the electric tester to measure the main switch of the incoming line at home, if the incoming line has electricity and the outgoing line has no electricity, it is the internal circuit of the air switch and there is no tripping, which is rarely seen in maintenance. I have only seen one case in my 20 years of maintenance.

If there is no trip at home but there is a sudden power outage, it may be near your home, there is a problem with the power company, or it may be that one of the electrical appliances in your home has caused the fuse to burn out, or there are some other factors, it is possible that there is a problem with the wiring of your building, you don't worry, there may be maintenance personnel coming to repair it in a while.

It may be that the meter has no electricity bill, and the meter will be powered off. If you pay the bill, you will have electricity. Or it is also possible that the outside of the switch shows that it has not fallen, but in fact the inside has been disconnected. This may be the case with old electric switches.

It should be based on whether there is power or no power at the inlet end of the user. If there is electricity, it means that the user's electricity is faulty, and if there is no electricity, it means that there is no power supply, which is a fault of the power supply bureau for repair.

Can you raise this question, indicating that there must be no power outage, then there is only one possibility that the load is large and causes the overvoltage and undervoltage protector in the electrical box to cause power failure, to avoid this phenomenon, you must pull the plug frequently, do not pull it all year round, the specific solution: pull the gate first, unplug the electrical appliances at home and then wait a few minutes, and then close the door to solve the problem!

If you have a power outage in this area, you go and ask your neighbors, if they have electricity, it means that your meter is broken, or the property has given you a power outage, go and ask.

Didn't trip and suddenly the power was out, maybe there was a power outage, you can ask the neighbors.

If there is no trip, and there is no unified power outage, then the only possibility is that the bill is in arrears, and the electricity bill should be paid in time.

There is no electricity at home, or it may be that the growth of the property community has tripped, you can call ** to ask the property or you can go down, or you can ask the people in the village.

There is no trip and no power, it may be a short circuit. See if the line is dropped or broken. Hope.

It may be that the power supply is out of power, and you should ask the property management or power supply company.

Because you checked whether it was caused by tripping, then in this case, it should be a power outage in the area or a power outage within the community for some reason, you can also call the power bureau to inquire about the specific reason.

It could be a widespread power outage, or it could be a broken light bulb, and you can ask your neighbors if there is a power outage.

Call ** and ask the property, it may be that the entire building is out of power, or it may be that there is a power outage in arrears.

Hello! It could be because there is a problem with the electrical circuit, or the power company has an emergency power outage.

Didn't pay enough? , like a prepaid card, when the money runs out, it will stop by itself.

The reasons why there was a sudden power outage at home and it didn't trip are as follows:1. Check whether the emergency lights outside the house are on, and if they are on, it means that there is no power outage, otherwise it is a collective power outage.

2. Turn off the main switch and check the circuit in the house to see if it is burned.

3. Check whether there is a problem with the line, due to the poor contact of the incoming line or the end, there will be no power, and it needs to be reconnected.

4. If it is an old-fashioned house, it may also be caused by poor contact with the wires and wires.

The main reasons are: 1. The first thing that comes to mind is whether it is a collective power outage of the power company. 2. If the main switch does not trip, consider that the internal contact may have poor contact, so the power supply cannot be turned on. 3. The power company's external line did not send electricity to the home.

Suggested solutions: 1. Check whether there is a power outage in the neighbors next door, or check whether the public lights outside the house are on, and if they are on, it means that there is no power outage, otherwise it is a collective power outage of the power company, and it will generally be notified in advance. 2. If it is a wiring problem in your own home, the most likely reason is poor contact with the internal contact.

At this time, you should check whether there is electricity at the main switch of your home, if there is no electricity, it means that there is a power outage or a problem with the line in front, and if there is electricity, it means that there is a problem at the main switch of your home. It is recommended to turn off the main switch and check the electrical circuits inside the house to see if there are any burnouts, and if there are burnouts, they need to be reconnected. If you can't solve it yourself, ask the electrician master of the property to help, or find another professional electrician to deal with it.

3. If there is no power at home but it is not tripped, if the power company's external line does not send electricity to the home, you need to contact the property or the power bureau to inform the specific situation and let them solve the problem.

The reasons could be:

1. There is a problem with the line, it may be that the line connection is not good, resulting in ignition and a short-term power outage, but once the line is stable, it will be connected by chance, it is recommended that you pay attention to every wire connection part in your home, and feel whether there is ignition or overheating.

2. The zero line is broken. Test it with a test pen, the two holes of the socket, and the light of the test pen must be on. To see if there is electricity in other people's homes, it is best to look at the place where the zero line and the main zero line are connected, usually the probability of problems appearing here is higher, especially when using high-power electrical appliances.

3. It should be the line break, the treatment method, add a resistive load, such as an incandescent lamp, (turn on the light control switch) and then measure the resistance value of the switch (must be powered off), and the fault can be judged. Finally, find the lights or sockets in sections.

4. The meter is broken. If you have a universal meter at home, you can test it yourself, and the voltage at the inlet of the universal meter reaches 220V, which means that the power outage caused by the broken meter. If you have a problem with the meter, you need to find a professional electrician.

Emergency measures

In the event of a power outage, lighting tools such as flashlights should be used to first check whether the internal power distribution switch and leakage protector have jumped off.

If there is a burning smell, smoke and discharge in the room, all power should be cut off immediately to avoid fire.

The fuse is blown and should be replaced in time, but it cannot be replaced by copper, iron and aluminum wires.

The room should be equipped with candles, flashlights and other emergency lighting sources, and placed in a fixed location.

Aging wires are easy to cause power outages, and should be reported to the relevant departments for replacement as soon as possible.

If you find that the power outage is not caused by indoor reasons, you should contact the property management personnel in time.

1. Collective power outage: check whether the neighbor's house has electricity and check whether the electricity meter is normal. 2. Power outage at the main gate: the main gate on the floor tripped due to the use of high-power electrical appliances.

Professionals can be called in for repairs. 3. Poor power contact: In case of power failure caused by electrical leakage or burnout of the switch, you can try to unplug the electrical appliance and reopen the main switch in the room. 4. Arrears: It can be determined by *** or the power supply company, and the payment can be made. <

1. Collective power outage: check whether the neighbor's house has electricity and check whether the electricity meter is normal.

2. Power failure of the main gate: If the main gate of the floor is tripped due to the use of high-power electrical appliances, professionals can be called for maintenance.

3. Poor power contact: In case of power failure caused by electrical leakage or burnout of the switch, you can try to unplug the electrical appliance and reopen the main switch in the room.

The electricity at home does not trip, there is no arrears, and there is no electricity for no reason, it turns out that this guy is in trouble.

The reason for this phenomenon may be the cause of the electrical appliance itself, or it may be the cause of a certain section of the line. For example, the insulation at a certain point of the line has been damaged, but there is no direct short circuit. Between the two states of insulation and short circuit.

Then when the appliance first starts working, that is, when the current is just passed, it will not be short-circuited. However, after working for a period of time, as the temperature rises, the insulation performance of the weak point of the insulation decreases rapidly, resulting in a short circuit.

Excessive power consumption and tripping: Solution: When boiling water, do not cook, and turn on the air conditioner, washing machine, induction cooker, etc. at the same time. Stagger high-power appliances.

Leakage: If it is hot and there is leakage, it is also tripping (generally there is a leakage protector) If it is a leakage that causes tripping, then the hot fast can not be used, there is a risk of electric shock, and it is still reset on the leakage protector. See **.

The reset button is in the red circle, the blue side is protruding after the leakage, and it is flat after the reset is normal. Only if it is flat can it be transmitted.

Short circuit: There may be a short circuit in the power cord that is hot fast: it is either repaired or replaced by a hot one. Generally, it can be repaired on the plug side. It is not serviceable on the side of the heating head.

It could be the following:

1.There is electricity at the upper end of the air switch, but there is no power at the lower end of the upper switch, and the switch is damaged.

2.If there is no power at the upper end of the switch, it may be that the upper level switch or the switch knife, the fuse is tripped or fused.

3.In the case of confirming that there is power in the live wire, measure the two jacks under the socket with an electric pen to show that both holes have electricity, prove that the neutral line is broken, and check the contact of the neutral line of the distribution box.

An air switch, also known as an air circuit breaker, is a type of circuit breaker. It is a switch that automatically disconnects whenever the current in the circuit exceeds the rated current. The air switch is a very important electrical appliance in the low-voltage distribution network and the power drive system, which integrates control and a variety of protection functions.

In addition to completing the contact and breaking circuits, it can also protect the circuit or electrical equipment from short circuits, serious overloads and undervoltages, and can also be used to start the motor infrequently.

If there is no electricity at home, you first need to check the external circuit, that is, whether there is electricity in the household power supply, see if the neighbors on the same line have electricity, and the neighbors have no electricity, which means that the power supply in the household is not power, just call ** to the power supply bureau or property to determine that there is electricity in the household, then please check whether the main switch in the household has tripped, and whether the upper and lower pile heads have been burned, and then check down step by step.

Most trips are short circuits. The air switch is generally one at home, and there is also one in the unit. You just go find the one in the unit.

But you have to find the place where the circuit in your home is short-circuited. Generally, the air switch in the home is split. That is, one main switch, and 3 to 4 sub-switches.

You turn off all the sub-switches, turn on the main switch, and push the sub-switches one by one, as long as a sub-switch is pushed up, it will be short-circuited, indicating that the line is short-circuited. You first turn off the short circuit and push the others up, the room without the light is the place of the short circuit, and then you look for the place where the line is short circuited. Fix.

Finally, all the switches are pushed. ok!

The first situation: there is electricity at the upper end of the air switch, but there is no electricity at the lower end of the upper switch, and the switch is damaged.

The third case: in the case of confirming that the live wire has electricity, measure the two jacks under the socket with an electric pen to show that both holes have electricity, prove that the neutral line is broken, and check the contact of the neutral line of the distribution box.

In addition, when connecting the air switch, strip the wire out of the 2cm long wire end, bend the wire head back to 1cm with pliers to make the wire head parallel to the main line, and then insert the screw on the terminal hole, which can increase the contact area between the wire and the switch, and will effectively avoid the wire heating and burning out the switch and wire skin due to the contact surface being too small.

Your air switch should be fine.

The kettle plug is scorched, which is caused by the aging of the insulation, and it is not completely short-circuited.

When the live wire and the ground wire are really short-circuited, the leakage main switch will inevitably trip.

When there is a real short circuit between the live wire and the neutral wire, the air switch will inevitably trip.

I suggest you go to an electrician to see, because there are many reasons, such as the aging of the joints in your room, a little bit of resistance will be poorly contacted, or the amount of electricity used is too large, resulting in some joints burning out and poor contact.

There will be no call for a while, and even if it comes, you won't be able to use it, because electricity will produce resistance.

If the air is a regular manufacturer's product, there is rarely a poor contact, only overload tripping, it may be that the square of the wires in your home is not enough, see if several household appliances are used in this strand, so it is easy to overload, try not to turn on the water heater, induction cooker, air conditioner and other high-power appliances when boiling water.