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If the zero line is connected, it will affect the measurement, and this thing will definitely be there, so it is best not to replace it at will, otherwise there will be potential safety hazards.
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The switch on the meter is connected in series to the neutral line should not affect the measurement, as long as they are connected, or those connections are relatively good, usually it should not affect its quality effect.
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The switch in the meter box is connected to the zero line in series, which should affect the metering, and the electronic energy meter must be connected to the zero line, whether it is into the main zero line or out of the main zero line (any one can be measured normally).
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Connecting the zero line in series on the meter should affect the effect of his skills, because he may have a short circuit that will occur to him, so there may be no way to measure it.
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The neutral connection of three-phase four-wire watt-hour meters and single-phase watt-hour meters should be in parallel rather than in series. The parallel connection of the neutral line has basically no effect on the accuracy of the measurement. The incoming and outgoing lines of the neutral line in the meter are directly shorted.
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This word should be influential, it should be very influential.
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If a leakage protector is installed, it will definitely trip. Because the electricity that goes out of your fire wire passes through their zero wire, and does not pass through their own zero line, your leakage protector determines that the fire zero current is not equal, and thinks that the leakage is tripped.
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Does the series connection of the zero line in the surface switch affect the metering? If the shadow does not affect the measurement, it still depends on the method of operation? As well as some steps, and some of the performance of the instrument.
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The switch is connected to the zero line lamp in series in series, which can be measured, because it can be cushioned.
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This null effect dose should have some effect.
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This kind of thing does not affect the measurement, but there may be certain problems in terms of safety.
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Does the series connection parts of the apparent switch affect the metering? I don't really know what kind of impact this has as much as possible.
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The output load neutral line can be connected casually, or it can be connected from the main zero line of the incoming line, which does not affect the accurate measurement of the watt-hour meter.
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Absolutely not.
Although the neutral wire and the ground wire are safety items, if the neutral wire is in direct contact with the ground wire, it will cause the electrical equipment to fail to start normally, or this can not avoid unnecessary accidents.
The correct connection method is: after the neutral wire and the live wire are connected to the electrical equipment, the grounding wire can only be connected to the metal part outside the electrical equipment, and the principle of such connection is: when the electrical equipment is started without overvoltage, the grounding wire has no effect, but if the electrical equipment and facilities have leakage, overvoltage or overcurrent current, then the ground wire will extend the leakage current along the ground wire and release it to the ground in time, which effectively protects personal safety and property safety.
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The zero line can be connected casually, and it is the first time I have heard of it after working for more than ten years.
If the meter in the meter box is a single-phase meter, the neutral line is generally interrupted and connected to the neutral terminal of the single-phase meter. Because generally every household is equipped with a leakage switch at the outlet end of the meter, and it is not connected from the meter, and it is not easy to manage.
For the three-phase four-wire meter, the neutral line is generally not broken, and the neutral line of the meter is connected to a wire from the total neutral terminal row to provide voltage to the voltage coil of the meter. The conductor shall be a single-strand insulated copper conductor with a cross-section of not less than mm, while the working neutral wire of the load shall be wired directly from the neutral terminal strip.
The lead order of the neutral wire should be arranged neatly in the order of the meter.
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Yes, the zero line is connected.
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The 1P switch is connected to the live wire. The neutral wire is connected to the neutral terminal strip, and if there is no neutral terminal strip, it is connected to the neutral terminal of the upper port of other switches. (Parallel).
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This needs to see the design intent wiring of the drawings, I estimate that it should be from the upper end of the leakage switch of 1P+N, and a live wire to the upper end of the 1P circuit breaker, if the current is very large, you need to consider increasing the wire diameter of the leakage. There is also a possibility, that is, whether there is a 1P circuit breaker in front of each of your meters as the incoming switch of the meter line, then the meter, and then the outgoing line of the meter is connected to the leakage circuit breaker. This depends on the intent of the design drawings.
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First of all, make sure that you are the only one who uses electricity. If you don't use the meter to rotate, first analyze: Does the meter still rotate after your main gate is turned off? If it does not turn, the table is normal. If the watch turns more than one turn and continues, the watch is broken.
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If there is voltage and current in the meter, it will be recorded.
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As long as you use the dots, the table will be gone. The same goes for the zero line without passing through the table.
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1. If it is a leakage protector, you can disconnect the neutral live wire at the same time, of course, depending on the specific wiring, the correct wiring of a leakage protector should be 2 incoming wires and 2 outgoing wires. Your ** should belong to a leakage protector that can disconnect the neutral wire and the live wire at the same time.
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This is a two-pole leakage switch, and the neutral live wire is disconnected.
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After pulling it off, measure it with an electric pen, which is safer.
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The transformer works with the zero line grounding, and then your home is grounded through the original lightning grounding It is equivalent to repeated grounding It may be, absolutely not in accordance with the regulations, but the possibility of problems is not very large
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Previously, the low-voltage matching, the neutral and ground wires were separated. There is an accident in which the zero line is charged and injures people.
At present, the ground below 10kV is basically grounded with the neutral wire. Grounding from the transformer side.
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It is possible to connect the neutral wire and the ground wire together.
At present, the power supply system in residential areas is generally a TN grounding system, where "T" indicates that on the low-voltage side of the power supply transformer, the neutral line is directly grounded. TN grounding system can be divided into three categories: TN-S, TN-C-S, TN-C, TN-C, of which TN-S is the original three-phase five-wire system in situ, except for A|b|c. Three live wires, the neutral wire N and the ground wire PE are connected together at the transformer, but they are separated when they are drawn out of the transformer; The TN-C-S system means that there is only one line from the transformer to the user end, and the user end or electrical equipment is separated into a neutral wire and a ground wire; The TN-C system means that the neutral and ground wires can always be connected.
Therefore, the above connection is allowed, and the total air switch will generally be installed to facilitate maintenance, but even if the user side does not see it, the power transmission side will generally still be there.
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Non-normative. Estimated to cut corners.
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The neutral wire is originally grounded, equal to the ground potential, and should not be electrified. If the upper and lower zero wires of the main switch are electrified, it means that the neutral wire at the upper end has been broken and is charged by the fire wire. The solution is to check whether the upper line or wiring of the main switch is disconnected or in poor contact, and repair.
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This situation is generally that the zero line before your meter box is broken and the live wire is normal, and there are electrical equipment connected to the line at your home, and you measure the electricity in the distribution box through the electricity from the electrical equipment to the live wire, which is generally called reverse electricity.
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The neutral line is inherently induced, and if the current of the three phase wires is unbalanced, the neutral wire will have current.
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Answer: The zero line from the power supply to the transformer end of the power supply is broken or oxidized, and the detection point is out of power from the new connection.
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The switch of the lamp in the lighting circuit is installed on the zero line, and the zero line and live wire can also be replaced in the meter box, but it is necessary to pay attention to whether it is consistent with the power distribution regulations with other power lines in the house.
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The neutral wire is on the terminal strip in the lower left corner of the box, with a blue "n" next to it. There is no meter in the box, and there is not enough space.
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This is just a glow, indicating that the wire that controls your light switch is not connected to the live wire, that is, the live wire is not powered off, but the neutral wire.
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If the air switch is 1p, the zero line will be connected to the lower end of the main switch.
If it is a 2P air switch, lead the neutral wire from the lower end of the main switch.
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After the light is turned off,there is residual light,first of all,we must eliminate the human factor,the so called human factor,is to check whether t