May I ask if the light is turned off and the switch is pressed again, what is the general problem an

Hello, this situation is caused by the poor contact of the spring blade in the switch, maybe it is a quality problem, or it is too long, it is recommended to replace one.

In this case, it is most likely that your light is not in good contact, and the moment you press the switch, it touches again, so it lights up again. It is recommended that you reinstall it.

This can be a problem with poor contact, you can unscrew the bulb and then turn the resistance inside when proceeding. It's good to be sturdy and tight.

Turn it off by itself, and then press the switch and turn it on halfway, it will solve the problem by tripping itself.

This phenomenon is that the line contact is not good, you should re-turn the line and connect the connection well.

This may be due to the poor contact of the light switch, you can try to change it to a new one.

This is also a normal phenomenon, and it is generally not a big problem.

It may be a problem with contact, you can take a look and try a few more times.

It may be that the switch is not tightly wired.

May I ask if the light is turned off by myself, and it is okay to press the switch, what is the general problem, that is, the contact problem, right?

Please ask if the light is turned off by itself, press it, the switch is good again, what is the general problem, how to solve it, this light is turned off by itself. Press the switch again and again, what is the general problem, how to solve the light is turned off, press the switch and it's good.

This electric energy switch must pay attention to the game ofo o no, must be distinguished.

There are two reasons why the light switch is still not completely off after turning it off. One is the afterglow of the phosphor in the lamp, but this light will disappear quickly; The second is that there is always a sense of rolling glimmer in the flash, it is estimated that the switch is connected to the zero line, at this time because the lamp is connected to the live wire, there will be a small current through, so it will emit a glimmer.

Turn off the main gate and try to see if it can be closed! If it can, then it is in the line of the connected bulb, there is static electricity and residual electricity, the most effective way is to check the live wire, generally the primary problem causing static electricity is the cause of the live wire.

If it can't be turned off, then you can take off the LED bulb, whether it is off, whether it is no longer slightly bright, otherwise it is the cause of a large amount of static electricity generated by the distribution box of the home.

Notes:

If the slight brightness is not dealt with in time, then it is easy to cause the LED lamp beads in the LED bulb to appear light decay, because the slight brightness proves that the lamp beads have been shining, so when this kind of problem occurs, if you can not solve it, it is best to call the corresponding electrician to test whether there is static electricity at home, and eliminate static electricity If it is a problem with LED bulbs, it is best to find the corresponding supplier and provide technical solutions.

1. The problem of installation wiring, when installing the wiring, the live wire (phase wire) is directly connected to the lamp, and the control switch is connected to the zero line; 2. The switch that controls the energy-saving lamp at home is completely correct, and the switch is connected to the phase wire (live wire), but the switch is with a luminous indicator light (that is, the kind that will light up on the switch after the light is turned off). If it is the first case, the wiring should be changed to the correct way of wiring, if it is the second case, then the switch can be removed, the indicator light inside can be removed or replaced with a switch without an indicator light.

The single-wire sensor light switch requires continuous power to detect if the human body is in range, and a small current still passes through it after it is turned off. The essence of LED is still electrically excited phosphor, so it is normal to be slightly bright. The resistance is to let the current pass through the resistor, and the current through the LED is further reduced and extinguished.

If the switch turns off the light, if the brightness does not change, or the same as when the light is turned on, the contact inside the switch is damaged and needs to be replaced.

The off-switch of fluorescent lamp or energy-saving lamp is still slightly bright, mostly because the switch is connected to the neutral line, and the live wire switch should be adjusted.

Some LED lights still have a faint light after turning off the power switch, which needs to be eliminated by installing relays or other control components.

Hello dear, <>

1. It is likely to be caused by the loosening of the clamping screws of the lamp switch or the main power switch. Once the wire is loose, it will cause the phenomenon of being connected or not connected, it is normal when there is no electrical appliance or low-power electrical appliances are used, when you turn on the light, due to the increased load, the clamp screw part will be ignited and accompanied by a sizzling sound. If it is serious, the power will be cut off for no reason, and after a while, the wire will cool down and return to normal.

It is recommended that you tighten the clamp screws of the switch and the main power supply, and the fault will be eliminated. 2. The reason for the power failure is that the screws of your switch clamp line are loose, and the power is cut off due to poor contact due to the increase of the heating gap after the load is increased. After the broken hole type electricity, the load is reduced, and the gap is reduced after the screw is cooled, and the finger flutter loss is small and temporarily returns to normal.

I hope my answer is of great help to you, and finally I wish you good health and a happy mood! <>

The switch at home is broken and can't be turned off, and if the bulb is removed, the switch will not consume power if it is always on. Because the whole circuit is not working. That is, no closed circuit is formed.

This phenomenon is that you connect the neutral wire to the switch, because the live wire is directly connected to the lamp, when you turn off the switch, the circuit is generated, and the electricity returns to the switch from the bulb, so the two wires will have electricity, the solution: put the live wire through the switch, or the power cord connected to the lamp can be reversed.

In order to make the alternating current have a very convenient power conversion function, usually the power transmission is in the form of three-phase four-wire, the three ends of the three-phase electricity are called phase wires, and the three tails of the three-phase electricity are connected together and called neutral wires"Zero line"。The reason why it is called the zero line is that there is no current passing through the neutral line at the time of three-phase equilibrium, and then it is directly or indirectly connected to the earth, and the voltage difference between it and the earth is close to zero.

The earth is a good conductor, and the ground wire is short-circuited to the earth through a deeply buried electrode. The transmission of mains power is in a three-phase way, and there is a neutral wire, and the current of the neutral wire is zero when the three-phase is balanced, commonly known as it"Zero line"Another feature of the neutral wire is that it is short-circuited with the ground wire in the total distribution input of the system, and the voltage difference is close to zero. The three phase wires and the neutral line of three-phase electricity have a voltage of 220, which will produce electric shock to people, commonly known as it"Fireline"。

In electroengineering, the alternating voltage connected to the mains line is 220 volts (volts for short, the symbol is V), and there are two wires in the line, one of which is called the "neutral line" and the other wire is called the live wire. In electrical engineering, it is often referred to as the neutral line of fire or the one-zero-one fire.

The circuit switch for entering the home is generally to cut off the live wire and install a leakage protector to prevent personal electric shock accidents.

Under normal circumstances, the ground wire will not leak, and the common ones are: two-hole, three-hole socket. In general, in the two holes, the left hole is connected to the neutral line, and the right hole is connected to the live wire. In the three-hole socket, the upper hole is connected to the ground wire, the left hole is the neutral wire, and the right hole is the live wire.

The live wire is the power line that transmits electricity in the circuit.

The neutral line, mainly used in the working circuit, leads out the trunk line after grounding from the neutral point of the transformer. (You can use a tester to determine which one is the live wire).

The above content reference: Encyclopedia - Zero Line of Fire.