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There are two ways to choose from the socket zero live wire, the first one is to find the distribution box.
Pull off the main switch, there is no electricity at home, or there is a distribution box at home can be pulled off, the main switch is two live wires, the zero line is all disconnected, oh, all the sockets have no electricity, if it happens, the phenomenon of leakage, the general leakage protector.
Will the leakage be detected and trip directly, and the triprongs of household appliances can be measured with a universal meter** to produce grounding phenomenon? If this phenomenon occurs, it may be that the water ingress sensor switch of the electric refrigerator may cause the refrigerator shell to be grounded, or other electrical appliances cause grounding, what will be the problem? If there is no main switch.
Can't turn off, there is electricity, the operation is dangerous, so you can only buy gloves to operate, insulated gloves, you will not be electrocuted whether you touch your hands, if you don't have gloves, his hands will be electrified, according to the regulations, electricians generally need to bring a set of gloves, the white one is like one, gloves, and then wear insulating gloves, a total of twice, third, if you use it, first observe whether the insulating gloves are damaged? If it is damaged, it can no longer be used, buy a new insulated glove, fourth, if the glove is seen today, is there any air leakage? You need to blanch a little more, and then press hard to see if there is an air leak, then don't use it, the general product bond expiration date, if it expires, then the general her, insulation she will decline, to protect their personal safety, so you can only wear gloves and operate with electricity.
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The zero live wire is charged at the same time, which means that the zero line is disconnected, and the electricity induced by the live wire is not discharged. Please check the neutral line for poor contact and open circuit. Note: Open circuit ≠ short circuit.
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There is "electricity" in the zero line, which is generally caused by the disconnection of the zero line, and it is recommended to check the line.
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If the lamps and appliances at home are normal, but the zero line of the socket is live, that is, the connector or broken wire above the zero line of the socket, find out the breakpoint and connect it, if the other is not normal, check whether the zero line at the empty opening is collapsed.
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This indicates that the line is faulty, and it is estimated that the zero line is burned out, or the contact is poor, so solve it quickly and pay attention to safety.
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If you have a neutral live wire on your socket, it shows that there is power. It means that your socket wire is connected to the wrong one, or the wire connected to the socket has a short circuit, only the live wire is energized, and the neutral wire is not energized.
You need to take the socket apart first, swap the two wires on the binding post and see if you can solve it.
If it still doesn't work, you need to trace it along the socket wire to see if the ** wire is broken.
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1. There is leakage of electrical equipment on the line, and the end of the protection device makes the neutral line live.
Solution: Power failure for maintenance, find out the leakage equipment for repair, and find the reason for the end of the protection device.
2. There is a phase grounding on the line, and the total protection device in the power grid is protected at the end to make the neutral line live.
Solution: After the power failure, first use the shake meter to measure the line to see if the line has bad insulation, and pay attention to the instrument in the line to be disconnected when measuring.
3. The zero line is broken, and there is leakage or a large single-phase load in the electrical equipment behind the fracture, so that the zero line is electrified.
Solution: Test whether the zero line is broken after the power failure, and find and repair the broken line.
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The zero live wire of the socket has electricity, which may be caused by his zero wire not being connected properly, or it may be an open circuit. The solution is to reconnect the wire.
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This is the phenomenon that the change has a broken circuit or poor contact, after the zero line is broken, the live wire flows through the load, so your time measuring pen is bright.
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It is normal for the live wire to have electricity, and the neutral line is broken or not connected in the front section.
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Under normal circumstances, there is voltage between the neutral live wires.
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Three-phase current imbalance. The user needs to check and adjust the three-phase current.
The installation standard of the electrical box stipulates that the electrical box and switch box should be installed upright and firm, and shall not be inverted or skewed; The installation of the electrical box should be vertical; The vertical distance between the bottom and the ground should be greater than or equal to less than or equal to. If there are multiple electrical boxes, the distance between the electrical boxes should not be less than 30mm. The specifications of the electrical box can be checked with a support and angle ruler.
Check the quality of the distribution box: whether the insulation materials used for the electrical box and the electric cover of the distribution box are in good condition. The electrical box must be covered with a lid, and the wire must not be exposed.
In addition, the switches in the distribution box must be installed securely. When accepting the switch, it must be rocked from side to side. If it is loose, it should be replaced.
Precautionary measures: 1. The installation of the switch should be correct, after all, it is related to the safety of electricity, if the installation is not correct, it will cause the switch to leak and cause electric shock accidents. The switch is on the fire line, which can control the opening and closing of the fire line, maintain the electrical appliances, and ensure that the electrical appliances are not electrified.
2. The switch of the control lamp should be connected to the live wire and the bulb, when the switch is disconnected, the circuit not only has no current, but also the light strip wire is disconnected, preventing people from contacting the bulb and the live wire to form a path, electric shock accident.
3. Pay attention to the installation position of the switch socket. The placement of the switch needs to be decided according to the living habits of family members. Most people are right-handed nowadays, so the door opens from the right and the switch is on the left side of the door. In addition, for the two stairs, dual control switches are used on both sides of the living room.
4. Pay attention to the waterproof and moisture-proof switch socket. Sockets installed in bathrooms need to be equipped with switches and indicator lights, and if installed in a wet location, install a waterproof cover on the surface to avoid water vapor entering the socket and causing a short circuit.
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Both the live wire and the neutral wire are powered because the neutral wire is broken. That is to say, the current starts from the live line and passes through the electrical appliances returning to the earth from the zero line, and now the zero line is broken and the current cannot be returned, so it stops on the zero line that has been broken, and the phenomenon that both wires are electrified. In technical terms, it's often called no loop.
To put it simply, it is possible to think of the current as a water flow and the wire as a water pipe, the live wire is the water supply pipe, and the zero line is the return pipe, the current passes through the live wire to the electrical appliances (such as tungsten light bulbs), and then returns to the outside through the zero line, after the zero line is broken, it is like the return pipe is broken, the pipe (that is, the line) before the break point will have water (electricity) out, and the pipe after the break point will have no water. That is, people usually say that "the normal zero line is not electrified, and the neutral line is broken and becomes two heads, one head is electrified, one head is not charged, and the charged end is the one connected with the electrical appliance". It is because the fuse is blown that the current in the live wire is transmitted to the neutral line through the electrical appliance, and because the neutral fuse has been broken, it cannot cause a loop, so the neutral line naturally has electricity.
If you want to solve the problem of zero line breaking, you should start to follow the direction of the zero line until you find the position of the live zero line until you use the power protector, gate knife, fuse or the zero wire terminal card in the switch box, and connect it after confirming the breakpoint.
The hidden danger of electricity in the neutral line:
The zero line is usually a problem with its own power distribution equipment, and the zero line can be seen through the changes of the indoor bulb, and the lighting in the load often shows the phenomenon of flickering and dimming, and the bulb may burn out when it is the brightest. The reason is that the zero line connector is poorly contacted, and the flickering of the bulb is due to the potential shift of the phase voltage, and the change takes the voltage from other phases and superimposes it on the original phase, which makes the phase voltage rise to more than 220V, causing the bulb or the single-phase household appliances to burn out, and even endanger personal safety. In addition, the outdoor three-phase four-wire low-voltage line will also cause the above reasons if the contact is poor at a certain neutral connection point on a certain pole tower.
Therefore, it is necessary to frequently ask an electrician to check whether the connector of the line has poor contact, and if possible, the zero line joint on the way to the line should be minimized to ensure normal power supply.
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In the general power distribution system, the neutral line has been grounded, so the neutral line to the ground should have no voltage, in the actual situation, because of the difference between the voltage drop of the wire and the grounding potential, the ground wire may have a voltage to the ground, but the voltage should be very low, usually ignored. If the neutral line of the live wire shows a high voltage to the ground, it is likely that the neutral line is broken.
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Only one neutral wire can be brought over from other positions, preferably from the ground wire at the same time.
If it was originally a switch, I don't use it now, and I want to change it to an outlet. You can connect the two wires in the lamp holder together and wrap them with insulating tape, so that the neutral wire will be brought over. Connect the original live wire to the L connector on the socket, and connect the original lead to the N connector.
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If the socket is ready-made, then it can't be without a neutral wire!
Socket wiring diagram.
If there is no neutral wire at all, the socket will not operate normally!
At this time, if you want to use the socket, then you can only find a way to damage the renovated wall as little as possible, and find a shortcut to attract a neutral wire from somewhere else!
Only then can the socket be used normally.
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If there is a wire pipe, you can find the zero line in the main line or find the zero line from under the lamp to pass through one, I add a socket to my friend at the original switch is to find the wire pipe of the switch from under the lamp, and connect a zero wire at the zero line of the lamp to the wire box of the switch.
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The socket cannot have no zero wire, there is no zero line in the switch, if the switch changes to the socket, there is no zero line in the switch, you need to lead a zero line from the lamp head, I hope it can help you.
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It should be caused by a wrong connection.
The live wire should be connected to the L connector on the socket, the neutral wire to the N connector on the socket, and the ground wire to the ground wire identification interface on the socket. If there is no ground wire, the ground wire identification interface is empty.
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It can't be said that there is electricity if it is connected correctly, take a light bulb and really connect it to the live wire and the neutral line, and if it is not lit, it means that there is no power.
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For the socket to have electricity, the individual wires must be installed correctly and powered. Pipe socket wire pairs do not necessarily have electricity.
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The socket is connected to the right one! If the line is out of power, then the socket is still out of power! If the appliance is broken, can you complain about the socket?
So, let's check it out!
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The professional point is to use a multimeter to measure whether there is a 220V voltage.
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The key to the problem is that the electrical appliance is determined to be good.
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The switch didn't close, or it would run out of power!
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It is likely that the corresponding empty opening in the power box tripped, and was not pushed?
If you don't understand it, don't get it, it's dangerous! It is recommended to find a knowledgeable master to help you do it.
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The reasons why the socket has power at the zero line of the live wire are as follows:1. When our home is connected to the power grid, some people are grounded in order to protect electrical appliances, resulting in the zero line being electrified.
2. The load of the three phases is not balanced, which leads to the instability of the neutral potential, so it has a voltage.
3. Connect the zero fire wire together.
No matter what is caused by the zero line electrification, it is unsafe to use electricity, and if it is not dealt with well, it will bring unimaginable harm to life, so when we install the wiring, we must buy the best guaranteed regular wires, and choose a skilled electrician and strictly follow the specifications to wiring to achieve safe electricity.
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Kiss! Hello, happy to answer your <>
The reasons why the neutral wire of the pro-socket live wire is live are as follows: the place where the neutral wire is wired is disconnected, resulting in electricity.
Under normal circumstances, the zero line will not be electrified, and if there is electricity on the neutral line, it is likely that there is a problem with the circuit, or the electrical leakage phenomenon occurs, and at this time, the neutral line current will not cause tripping, so the neutral line will have electricity. How to distinguish household wires 1, use the voltage test table to test, household electricity is generally three wires, there are live wires, neutral wires and ground wires, the voltmeter test out of the high voltage is the live wire, the voltage value is very low or even no is the zero line, the ground wire generally has no voltage. 2. There is also a distinction according to the color, when you can buy a wire, you can buy a ground wire of different colors, most of the live wire will use a red wire, the zero wire is blue, and the yellow and green are generally ground wires.
3. Using the socket, under normal circumstances, the electrician will install the socket with the connection method of the left zero wire, the right live wire, and the ground wire above. 1. Do not build and dig wells under high-voltage wires to avoid the danger of falling high-voltage wires. 2. In the countryside, many people are drying clothes outdoors, and they must stay away from wires, let alone dry clothes directly on wires.
3. When the outdoor wires are disconnected, the human body must be kept away, and even if the local power company is notified to solve the fault, it must not be approached, and the high-voltage electricity is very dangerous. 4. The quality of circuit switches, wires, electrical appliances and other electrical appliances used at home must be guaranteed to avoid failures. Hope mine can help you <>
Do you have any other questions?
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