Is it better to connect all the loads to the same phase line at home, or to connect them separately?

The home is three-phase electricity.

table, the loads are all connected to the same phase line.

Okay, or is it better to pick it up separately?

In the past two years, the rural areas have carried out circuit transformation, and many people have found that the existing rural households have connected three-phase electricity to their homes. In the past, our electrical appliances were two-phase electricity, so the household line was also two-phase electricity, and now why do some people connect three-phase electricity to the home when the circuit is transformed? Which one is better?

There are roughly three kinds of people who connect three-phase electricity to the home:

The first is that there are three-phase electrical appliances at home, and these people must be connected to three-phase electricity. Why do they want to buy appliances for three-phase electricity? Because the cost of three-phase electrical appliances is low and the efficiency is high.

Power saving. Second, it is the people who are ready to buy three-phase electrical appliances, they are worried that there will be no three-phase electricity at home to buy three-phase electrical appliances in the future, so they take advantage of the current circuit transformation to access three-phase electricity.

Third, these people are purely blindly following the trend, they don't know what the use of three-phase electricity is, but they see others to pick up their own connections, and they also hear that three-phase electricity saves electricity.

So is it good for people who can't use it temporarily to access three-phase electricity? First of all, this power saving is that the three-phase appliances of the same power are more powerful than the two appliances (that is, the power saving), but if your appliances themselves are two-phase electricity, it is meaningless for you to connect the three-phase electricity to the home, because it still uses two-phase electricity. And the electricity cost of three-phase electricity into the home is generally higher than that of two-phase electricity into the home.

If you don't have a three-phase appliance, then why bother with the electricity bill for three-phase electricity? And many people don't understand what's going on with three-phase electricity, even if you know, your family doesn't necessarily know that there are both three-phase electricity and two-phase electricity at home that are easy to be confused by the elderly and children, once you get it wrong, an accident will occur, so users who can't use three-phase electricity for the time being, it's best not to access three-phase electricity, and you can still connect it in the future.

Don't follow the trend of this thing, three-phase electrical appliances to save electricity, not to connect three-phase electricity to save electricity, the two-phase electricity we use is also a live wire and a zero line in the three-phase electricity, you connect the three-phase electricity to the home, or use one of the live wires and zero wires, and the other two live wires are idle. However, if you connect the three-phase electricity to the home, you will have to pay the electricity bill for the three-phase electricity, which is not suitable.

It's definitely better to pick it up separately.

It must be evenly connected to each phase line, so that the load is evenly distributed, and the excessive load of a certain phase is reduced and it is not good for the transformer.

The three-phase meter at home, the load can not borrow a one-phase line, which will be unbalanced, and it is best to open and connect the load evenly, so that it will not burn things.

The three-phase meter can be connected to two-phase electricity, provided that the meter must be three-phase four-wire, and it is good to directly connect a live wire and a neutral wire.

There are two types of three-phase meters: three-phase three-wire and three-phase four-wire. If it is a three-phase three-wire one, it can't, because the three-wire three-wire connection is three live wires, and the single-phase electricity is one fire and one zero.

The three-phase four-wire three-phase meter can be connected to two-phase electricity, and the three-phase four-wire has three live wires and one neutral line, and the use of one phase alone does not affect the accuracy of the meter.

The two phases we usually talk about are actually just a line of fire and a zero line, and we often refer to this zero line as earth. The phase here is completely inaccurate idiom, and it is not the meaning of the phase in the three-phase four-wire system. The ground wire is not a neutral wire, there is a difference.

The three-phase electric intake meter is 4 lines, which are phase A, phase B, phase C, three live wires and one neutral line, any live wire and zero line together is 220V electricity, which is the two-phase electricity you said. If there is no neutral line, it is two live wires, and the voltage is 380V, and it can only be used with a transformer from 380V to 220V.

A three-phase meter is a meter used to measure voltage, current, electric power, etc. Its working principle is: the watt-hour meter is synthesized by voltage and current elements to generate - move into the magnetic field, so that the disc rotates under its action, and the speed of the disk is proportional to the size of the load current, so as to achieve the purpose of measuring electric energy.

Summary. It is possible to share the neutral line, and the common neutral line needs to be noted:

1. The cross-sectional area of the zero line cannot be less than one-half of the cross-sectional area of the phase line.

2. Each circuit needs to install a switch separately, and each terminal should be wired firmly and reliably.

Can two three-phase meters share one of the outgoing zero lines?

The zero line can be shared, and it should be noted that the cross-sectional area of the zero line should not be less than one-half of the cross-sectional area of the phase line. 2. Each orange circuit needs to be installed separately, and the wiring terminals of each clear front group should be firm and reliable.

Now there are three two-phase meters, and a three-phase distribution box needs to be installed, can it be directly connected to share a neutral wire?

Hello dear, no, the two-phase electricity you said is actually a one-way two-wire, and the neutral line is a phase loop. The three-phase electric ideal mold Ling Yulu type is 6 wires, including three live wires and three neutral wires, that is, each phase has two wire ends. In actual use, because the neutral line is not energized, the potential is 0, and the three neutral wires have the same nature, so they can be combined into one wire for use, which leads to our general three-phase four-wire system.

The potential of the three live wires is explained as follows: the maximum potential of 440 v. is reached by aFor reference, at this time, the potential of B and C is -220V, the -220 phase of B begins to increase towards 0V, the -220 phase of C begins to decrease towards -440V, and the A phase is already the highest, of course, it begins to decrease towards 0V.

At this moment, the difference between A and B is 660V, the difference between AC is 660V, and the difference between BC is 0V. The voltage is dynamically changing, and the effective value of the voltage used in the calculation is calculated by calculating the calculus function dedicated to industrial utility, AB, BC, CA, with a difference of 380V (calculus calculation for the 440V to -220V change process) and a relative zero line difference of 220V (calculus calculation of the 440V to 0V change process).

Three two-phase meters use three different phase wires, and is it okay to merge the neutral wires into one?

Hello dear, it is best to have three zero wires with 3 live wires, and do not take the public zero line. You can't use it publicly.

Summary. The abbreviation of electric energy meter is an instrument used to measure electric energy, also known as energy meter, fire meter, electric energy meter, kilowatt-hour meter, which refers to the instrument for measuring various electrical quantities. The earliest electric energy meter (also known as electric meter) was made in 1881 according to the principle of electrolysis, although this electric energy meter weighs dozens of kilograms each, very bulky, and there is no guarantee of accuracy, but at that time it was still valued and praised as a major invention in the scientific and technological community, and soon adopted it in engineering, with the development of science and technology, in 1888, the discovery and application of alternating current, and put forward new requirements for the development of electric energy meter.

Through the efforts of scientists, the inductive energy meter was born. Because the induction electric energy meter has a series of advantages such as simple structure, safe operation, low price, durability, easy maintenance and mass production, it has developed rapidly.

Two three-phase meters, two wires, with one load, are they the same as one meter?

Two three-phase meters are connected in series, and the electricity bill should be the same. In some cases, some people have doubts about the accuracy of the meter. The measurement of the meter is not accurate, and it is a little high.

At this time, the metering department will install another meter behind the original meter, and connect it in series with the original meter to verify the accuracy of the original meter. If the error is large, it means that the original meter is broken. Age allergies.

The abbreviation of electric energy meter is an instrument used to measure electric energy, also known as energy meter, fire meter, electric energy meter, kilowatt-hour meter, which refers to the instrument for measuring various electrical quantities. The earliest electric energy meter (also known as electric meter) was made in 1881 according to the principle of electrolysis, although this electric energy meter weighs dozens of kilograms each, very bulky, and has no precision of this excitation guarantee, but, at that time it was still regarded as a major invention in the scientific and technological circles by people to pay attention to and praise, and soon adopted it in engineering, with the development of science and technology, in 1888, the discovery and application of alternating current, and put forward new requirements for the development of electric energy high training meter. Through the efforts of scientists, the inductive energy meter was born.

Because the induction electric energy meter has a series of advantages such as simple structure, safe operation, low price, durability, easy maintenance and mass production, it has developed rapidly.

You belong to the electric energy meter directly connected in series in a primary circuit, although the connection method is correct, but the field rarely uses this direct series connection method.

Because the rated current of the meter is very small, the actual load current may be greater than the rated current of the meter, and when the load current is greater than the rated current of the meter, the metering of the energy meter will be inaccurate.

Therefore, a current transformer is generally installed on the site, and the electric energy meter is connected to the secondary side of the current transformer, and the reading needs to be multiplied by the conversion ratio of the current transformer to obtain the actual electricity consumption.

Below is an example of a wiring diagram with a current transformer.

Usually, the power supply incoming line should be directly connected to the metering meter, and the outgoing line of the meter should be connected to the pile head of the air switch.

Wrong. The installation specification requires that the power cord should be advanced to the meter, and the rear entry and air opening.

After looking at the incoming and outgoing lines of the live line of the meter, the zero line, there should be no wrong connection.

In addition, I personally feel that it is better to install the meter at the lower end of the switch, and the circuit breaker switch can play a protective role at the same time, and it is also convenient for maintenance.

Flip over the terminal cover, and you can see the wiring diagram of the three-phase four-wire meter. Wherein connect the S1 end of the secondary side of the current transformer, that is, the current inlet terminal is connected to the S2 end of the secondary side of the current transformer, that is, the current outlet end is connected to the three-phase power supply respectively, and the zero end is connected. For safety, the S2 end of the current transformer should be connected to ground after being connected.

It should be noted that the current measurement sampling of each current transformer must be in phase with its voltage sampling, i.e. as a group for a group and as a group.

Three-phase four-wire meter wiring: Look!

Summary. 1. Three-phase meter: connect the lines of the three-phase power supply to the a, b, and c phases of the three-phase meter respectively; 2. Seven two-phase meters:

The lines of the three-phase power supply are respectively connected to the A and B phases of the seven two-phase meters, and the A and B phases of each two-phase meter are connected to the A, B, and C phases of the three-phase power supply respectively, and the lines of the three-phase power supply of A, B, C, B, C, A, and B are connected in turn. First of all, the splitting method of a three-phase meter and a two-phase meter is different, a three-phase meter requires three wires, while a two-phase meter only needs two wires. 1.

First, connect the three wires of the three-phase meter to the three phases of the three-phase power supply, namely L1, L2, and L3; 2.Then connect the two wires of the two-phase meter to L1 and L2, or L2 and L3, or L3 and L1 respectively; 3.Finally, connect the two wires of the remaining two-phase meter to L1 and L2, or L2 and L3, or L3 and L1 respectively.

If the above steps are not properly wired, it can lead to a malfunctioning meter or even a fire. Therefore, when wiring, you should follow the above steps to wire correctly, and pay attention to the contact quality of the wire to avoid failure. Personal Tips:

When wiring, the correct steps should be followed, and attention should be paid to the contact quality of the wires to avoid failure.

There is a three-phase meter in the electric box, and how to divide the line of 7 two-phase meters.

1. Three-phase meter: connect the lines of the three-phase power supply to the a, b, and c phases of the three-phase meter respectively; 2. Seven two-phase meters: the lines of the three-phase power supply are grafted into the A and B phases of the seven two-phase electric meters, and the A and B phases of each two-phase meter are connected to the A, B, and C phases of the three-phase power supply respectively, and the lines that are excited into the three-phase power supply of A, B, C, b, C, A, and B are connected in turn.

Can you add, I don't quite understand it.

1. Three-phase meter: connect the lines of the three-phase power supply to the a, b, and c phases of the three-phase meter respectively; 2. Seven two-phase meters: the lines of the three-phase power supply are connected to the A and B phases of the seven two-phase meters respectively, and the A and B phases of each two-phase meter are connected to the A, B, and C phases of the three-phase power supply respectively, and the lines of the three-phase power supply of A, B, C, C, C, A, and B are connected in turn.

First of all, the splitting method of three-phase meter and two-phase meter is different, three-phase meter needs three wires, while two-phase meter only needs two wires. 1.First, connect the three wires of the three-phase meter to the three phases of the three-phase power supply, namely L1, L2, and L3. 2.

Then connect the two wires of the two-phase meter to L1 and L2, or L2 and L3, or L3 and L1 respectively; 3.Finally, connect the two wires of the remaining two-phase meter to L1 and L2, or L2 and L3, or L3 and L1 respectively. If the above steps are not properly wired, it can lead to a malfunctioning meter or even a fire.

Therefore, when wiring, you should follow the above steps to wire correctly, and pay attention to the contact quality of the wire to avoid failure. Personal tip: When wiring, you should follow the correct steps and pay attention to the contact quality of the wires to avoid failure.

Summary. Will the three-phase meter be connected to a single-phase 2 machines separately to save electricity costs?

Others say that 1 machine is connected to 1 phase, and the electricity bill is only counted as the one phase with high power, is there such a saying?

Nope. So how is it calculated.

It's just a normal calculation, it's the same.

Others say that the total degree of the three phases is the sum of the three phases, isn't there a lot of degrees?

It's all total power consumption.

What is the hourly power of that three-phase 800W?

Degrees per hour. Doesn't it say the sum of the three phases? , is that 24 degrees?

Three phases altogether.