Whether the meter is connected to the neutral line of the live wire, and what will happen if it is r

It is necessary to divide the live line and the neutral line, and if the meter is connected and cannot be energized normally, it will not be used normally.

The meter is divided into live wire and zero line, when it is connected, it must be clear that the live wire and the zero line must be connected, corresponding to the live wire and the zero line at the end of the connection, the live wire is energized, this needs to be noted, do not directly touch the live wire and the zero line inside the wire, there must be an insulated thing to prevent electric shock.

It's been less than a year since it ended.

Wiring method of single-phase watt-hour meter:

Single-phase watt-hour meters have special junction boxes. There are 4 end buttons in the junction box. The voltage and current coils are connected in the junction box at the factory when the meter is shipped.

There are a total of 4 wiring piles in the single-phase watt-hour meter, press the number from left to right, when wiring, you only need to press L live line in, 3 zero line in, 2 live line out, 4 zero line out.

It doesn't matter if the zero line of the meter is reversed, it does not affect the accuracy and safety of the metering, and the zero line of the live line should be divided, one is to standardize, and the other is to prevent someone from stealing electricity. Because the mechanical single-phase meter is metered by the current of the live wire, if the user who uses the mechanical single-phase meter connects the terminal post 1 to the zero line, if the user connects his own zero line to the grounding device (water pipe, heating pipe, etc.), so that most of the current does not pass through the coil of the meter, and the meter is less.

Connect the zero line to the water pipeline, heating pipe and other grounding devices, due to the high grounding resistance of the grounding device such as the water pipeline and heating pipe, there is a certain voltage difference, the water pipe is electrified, and all water users will also have the risk of electric shock.

When wiring the smart meter, remember not to connect the reverse inlet and outlet, if it is reversed, the impact is still relatively large, let's see the problem of the incoming and outgoing lines of the meter, and tell you the hazards and precautions of the incoming and outgoing lines.

1. The first generation of mechanical meters.

If it is a first-generation mechanical meter, when the incoming and outgoing lines are reversed, the meter will be reversed and the meter power will be reduced.

When wiring the meter, pay attention to check whether the incoming and outgoing wires are correct, and confirm that they are correct before they can be transmitted.

2. The second generation of mechanical smart watches.

The two-way billing of the internal counting gear of the second-generation smart meter, if the incoming and outgoing lines are reversed, it will also lead to inaccurate metering, which needs to be corrected in time.

3. The third generation of digital smart meters.

The third-generation smart digital meter is more intelligent than the above two meters, and if the incoming and outgoing wires are incorrectly wired, the display will immediately alarm the alarm.

In addition, the built-in communication module in the meter will be captured wiring error information, the first time to transmit to the power supply management background, the background management personnel will notify the electrician in time for maintenance.

Generally speaking, it is rare to have the problem of miswiring the meter, if it is a human deliberate misconnection to steal electricity, this behavior is illegal, please do not try.

The meter is wired incorrectly and the meter is not working properly.

If the meter is wired incorrectly, the meter is not working properly.

1. If the "zero line" and the "live wire" in the incoming line are reversed, the speed of the meter will be uneven, and the measurement of electric energy consumption will be inaccurate.

2. The two wires of the incoming line and the outgoing line have swapped positions, and the meter has the phenomenon of "reversing".

3. The inlet and outlet lines of the old-fashioned mechanical meter will be reversed, and the rotation will not be accelerated, and the speed will be determined according to the load size. Today's smart meters are not reversed.

Summary: If the wiring is not based on the design principle of the original meter, the amount of electricity used by the meter cannot be measured correctly.

If you want to divide the zero live line, if you connect the meter in the opposite direction, it will be inaccurate, and in serious cases, it will cause the meter not to rotate and not to go to the word, if it is a three-phase meter, it will also lead to no display for the digital type.

Hello, I am the answerer, Mr. Xiaocao, and I am happy to answer for you. First of all, the meter access must be divided into 1After the neutral wire and the live wire are reversed, the meter cannot be energized normally, which means that the meter cannot be used normally.

2.In the process of using the meter, it is necessary to distinguish between the live wire and the neutral line, which correspond to the live wire and the neutral line at the upper interface end respectively. The live wire is energized, and the hand should not directly touch the live wire and the inner line of the neutral wire to prevent electric shock.

Ask whether the meter needs to be connected.

Yes, after the meter is connected to a variety of electrical equipment and sockets, these electrical circuits and equipment are installed and wired, it is recommended that you wire according to the standard, so that it can be safer and more convenient when dealing with troubleshooting and changing the line in the future.

Then the LED lights in your home may not be able to use normally, and all the three-end plug-in appliances in your home may have weak current, and the life of your home appliances will be shortened.

In addition, turn off the household power supply to see if the meter will continue to rotate, and reverse the zero live wire, which will cause the meter to run dry.

It is impossible to reverse the power supply line, which is the work of the power supply bureau.

The indoor connection does not affect the meter counting. There are safety hazards in your own electrical appliances.

No, either no power or the other way around, depending on the type of meter you use.

1. Turntable watt-hour meter (old-fashioned mechanical meter).

This type of meter counts by rotating the turntable through a rotating magnetic field generated by a voltage coil and a current coil.

When the incoming and outgoing lines are reversed, the current phase of the current coil is 180 degrees different from that when it is connected, and the rotating magnetic field generated is opposite to that when it is connected, it will cause the watt-hour meter to be reversed.

2. A new type of smart meter.

There is a power-off relay between the output and the input of this kind of electric energy meter, when the input has no power supply, the relay does not engage, and when the input and output are connected wrong, the output will not have electricity.

If the live wire and the neutral line are reversed, it will not affect the speed of the meter, and it will not be reversed. It will have a certain impact on the safe use of electricity.

No matter how the live wire and the neutral wire are wired, the meter inlet terminal will not slow down and will not affect the metering.

If the live wire and the neutral wire are reversed, the meter will not slow down.

In general, there is little impact on the meter.

Don't think about those crooked doors, no matter how you try to get it, the meter won't slow down or not go.

According to the wiring standard, the color of the live wire (L) shall be red, yellow and green, and the color of the neutral wire (N) shall be black and blue.

The method of judging the neutral line and live wire in the home circuit.

When you are powered on, you can use an electric pen to measure, and all that will light up is the live wire. Disconnect the zero line at the main switch, only connect the live wire, turn on the lights at home in the position of on, measure with an electric pen, just now it is not lit, now it is all the zero line, and the rest is not lit all the ground wire.

The easiest way: after using an electric pen to determine the live wire, connect two bare wires and live wires to the 220V bulb respectively, and you can distinguish zero and ground from the brightness, the bright one is zero, and the slightly darker one is the ground.

The watt-hour meter has 4 connectors, which are 1, 3, 4, and 5. Measure with a multimeter Connectivity Connected. It should be 1 and 4 connected to the incoming line, of which 1 is connected to the live wire, 4 is connected to the neutral line, 3 and 5 are connected to the outgoing line, 3 is connected to the live wire, and 5 is connected to the zero line.

Actually, inside the watt-hour meter, there is one more in the middle of 1 and 3"2", which is connected to the current induction coil, is connected to 1 together, and the voltage induction coil is connected between 1 and 4.

People already know that the national standard is that the first wiring hole is the live wire in, and the second wiring Qi let the hole is the live wire out.

The third and fourth terminal holes are the zero line in and out, if the connection is reversed, the descendants mistakenly take the live wire as the zero line! If the first terminal hole is the live wire out, and the second terminal hole is the live wire in, the fire meter will be reversed. For single-phase meters, the live wire is reversed from the neutral wire, and the internal voltage coil has a voltage, because there is a current mutual inductance coil, and the reverse connection will be reversed.

The reason why the live wire of the household meter is connected to the incoming and outgoing wires and the reason why the meter will still go may be because of the wrong wiring scale, resulting in the circuit not being disconnected. Under normal circumstances, if the live wire of the meter is connected to the outgoing wire, the circuit will form a closed loop, the current will flow continuously, and the meter will rotate all the time.

To avoid this from happening, you need to wire it correctly. In the wiring of household electricity meters, the incoming wire should be connected to the power supply, and the outgoing wire should be connected to the electrical equipment. If the incoming and outgoing wires are connected, it is equivalent to directly connecting the power supply and the electrical equipment, and the circuit will form a closed loop, the current will continue to flow, and the meter will continue to rotate.

If the live wire inlet and outlet wires of the meter have been connected, it is recommended to disconnect the power supply immediately and reconnect the wire. When it comes to rewiring the bar, you need to carefully check the wiring instructions of the meter to ensure that it is wired correctly. If you are unsure about the wiring method, it is advisable to seek the help of a professional electrician.