What is the reason why the lights at home are still faintly bright

The reason why the light is still slightly bright when the switch is turned off is that after the switch controls the zero line, turning off the light only cuts off the power circuit of the lamp, and the live wire is still connected to the lamp, and the lamp will glow.

If the above problems are solved, the lamp will still be lit after turning off the light at night, and it should be considered that the zero line is live.

Theoretically, as long as the switch is broken, there will be no voltage on the zero line of the lamp, and the induced current will not be formed.

In real life, it is very common for the neutral line to be electrified, such as the neutral line is not well grounded, the line is too long, the wire diameter is thin, or the neutral line current is too large, which will cause the neutral line to be electrified.

1. When the switch controls the neutral line, not only will the power circuit not be cut off, but the live wire will also be connected to the lamp, which will cause the lamp to emit a faint light. 2. Most switches have indicator lights, if the indicator lights are still energized after turning off the lights, the current will flow to the lamps, causing the lamps to emit a faint light. 3. When the dual-control switch is used at home, there are many wiring methods, which will cause the lamps to emit a faint light.

1. When the switch controls the neutral line, not only will the power circuit not be cut off, but the live wire will also be connected to the lamp, which will cause the lamp to emit a faint light.

2. Most switches have indicator lights, if the indicator lights are still energized after turning off the lights, the current will flow to the lamps, causing the lamps to emit a faint light.

3. When the dual-control switch is used at home, there are many wiring methods, which will cause the lamps to emit a faint light.

Here's why the lights are still slightly bright when they're off:

1. It may be because when connecting the line, the neutral line and the live wire are reversed, in this case, the switch gate and the neutral wire are connected together, resulting in a slight light after the light is turned off.

2. If it is an LED lamp, it may be because its driving power output a large electrolytic capacitor, and the power stored in it is not fully discharged after the lamp is turned off, and the LED lamp is very sensitive to current and will glow.

Precautions for installation and use of electric lights.

1. First of all, before installation, we must confirm which kind of electric light we want to install at home, and then go to the market to buy. When buying, you must buy the best lamp, the safety performance can be guaranteed, do not buy those three no products, otherwise there may be a lot of failures when using, and there are even potential safety hazards. We try to choose lamps with relatively large brands, so that we can use them more confidently.

2. When installing electric lights, turn off the power supply at home and wear insulating gloves to prevent electric shock accidents during installation, which is very dangerous. If you don't have any experience installing electric lights, it's best not to try it yourself, or ask a professional to help install it.

After turning on the zero line of light control, turning off the light only cuts off the power circuit of the lamp, and the live wire is still connected to the lamp, so the lamp will glow. Solution: Reconnect the circuit and let the switch control the live wire.

2. The switch has an indicator light or uses an electronic switch, most of the switches have an indicator light, if the indicator light is energized after the light is turned off, then there will be a current flowing through the lamp. Some lamps and lanterns use electronic lighting, such as infrared switches, voice-activated lighting and remote control switches.

These switches do not completely cut off the circuit, causing the luminaire to glow when the light is turned off. Solution: Remove the switch indicator or replace it with a mechanical switch.

3. The wiring method of the dual-control switch is wrong, and there are many wiring methods of the dual-control switch, if the electrician adopts this wiring method, it will turn off the light and glow. Solution: Rewire the wire according to the neutral line inlet and control the live wire.

4. If the above problems are solved, and the lights will still be lit after turning off at night, you need to consider whether the zero line is live. Theoretically, as long as the switch is broken, there will be no voltage on the neutral line of the lamp, and the induced current will not be formed. In daily life, it is relatively common for the neutral line to be electrified.

If the neutral line is not well grounded, the line is too long, the wire diameter is thin, or the neutral line current is too large, it will cause the neutral line to be electrified. Solution: It is difficult to solve the problem of the zero line live individual, unless the transmission line is renovated, so that the lamps do not touch the conductor, such as:

Walls, roofs, and steel keels can also reduce the phenomenon of light emitting, but it cannot be completely solved.

When this kind of problem occurs, don't take it seriously, if it is said that the slight brightness is not dealt with in time, then it is easy to lead to the phenomenon of light decay of the LED lamp beads in the LED bulb, because the slight brightness proves that the lamp beads have been shining. Therefore, when this kind of problem occurs, if you can't solve it yourself, 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 to provide technical solutions.

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Summary. The reason why the light is turned off and slightly bright: 1. At night, after we turn off the light, there is still some subtle current passing through the bulb, which is connected with the indicator light and induced together, so even if the light is completely turned off, there will still be some bright light.

2. After the lamp is turned off, the electronic ballast will not be completely closed immediately, so it will continue to discharge for a period of time, so that the lamp will be completely extinguished after a while. 3. There may be static electricity at home, which needs to be checked by professionals.

When the lights are off, there is still light, but some do not.

How to solve this.

What's going on.

Not every light has a bright light.

The reason why the light is turned off and slightly bright: 1. At night, after we turn off the light, there is still some subtle current inside the bulb that destroys the forest, which is connected with the indicator light and induced together, so even if the light is completely turned off, there will still be some bright light. 2. After turning off the lamp, the electronic ballast will not immediately be in the state of complete shutdown of Tongyu, so it will continue to discharge for a period of time, so that the light will be completely extinguished after a while.

3. There may be static electricity at home, which needs to be checked by professionals.

The internal design is not reasonable, resulting in the current still being there after the lights are turned off.

Switches with indicator lights, smart switches, sound and light control switches, etc., need to connect the neutral wire and live wire into the switch at the same time when wiring. If the internal design of such a switch is not reasonable (poor quality), it will cause the switch to be disconnected and still have a weak internal current.

This part of the current is harmless to incandescent and fluorescent lamps, but if it is an LED lamp that is sensitive to electric current, it will cause flickering or fainting. There are two solutions at this time, one is to replace the ordinary switch or the better quality switch. The second is to remove the indicator light.

1. If there is a faint brightness, it means that there is still induction.

2. There is a problem with indoor wiring.

3. The switch may have leakage.

Solution: 1. Be sure to cut off the line of fire. According to the principle, when the live wire is cut off, there will generally be no induced voltage. But the neutral line if and the live line.

Parallel traces induce a weak voltage from the neutral line.

2. There may be a problem with indoor wiring. Solution, try to connect a 1m resistor to the ground wire (earth) from the neutral wire.

Or try to connect a 1m resistor between the two power cables of the LDE lamp.

3. The switch must not have leakage, and the switch must cut off the live wire.

It relies on the contact and separation of the internal contacts to control the lighting on and off. If something happens – for example, a short circuit in a lamp, a damaged light starter that causes excessive current, etc., the switch contacts will burn out.

If the contacts stick after burning, the switch will not be able to disconnect the lamp, so that the lamp will always be turned on. (If the burn is more severe, the switch will not be turned on.) ）

Generally, when the switch is burned, the key cannot be pressed or it is very laborious to press. At this time, it is necessary to consider the switch failure - the switch will not be burned out for no reason, and when solving the problem of switch failure, it is necessary to consider the switch quality problem and the lamp quality problem at the same time.

Answer 1: It may be that at the air switch, the neutral line and the live wire are connected incorrectly. Under normal circumstances, the neutral wire needs to be connected to the terminal post on the left, and the right wire is used to connect the live wire. If it is reversed, there may be a problem of leakage, which will be manifested in the light bulb appearing slightly bright after turning on and off the light, which is still more dangerous, and you need to find an electrician to adjust.

2. If there is only one lamp with a similar problem, it may be that the switch wiring of this lamp is connected to the neutral wire, in this case it should be connected to the live wire, so there is a weak current after the light is turned off, which will lead to a certain brightness.

The switch has an indicator light or uses an electronic switch, most of the switches have an indicator light inside, if the indicator light is energized after the light is turned off, then there will be a current flowing through the lamp.

The wiring method of the dual-control switch is incorrect.

The neutral line is electrified! Hey hey

The question didn't light up before.

Nothing was moved, just two days of dawn.

But don't worry about him.

What is the reason why the light switch is turned off, but the light is still faintly bright?

When the lights are turned off, they are still a little bright because there is still some current.

If the touch switch is installed, the indicator light is still energized after it is turned off, so there will be some currents, and if these currents pass through the lamp, there will be a slight brightness, and this problem will not occur if replaced with a mechanical switch.

If the neutral line is electrified, there will also be a situation where the switch is turned off and the light is still slightly bright. This situation is mostly caused by the poor grounding of the neutral line, or the line is too long and the wire diameter is thin, and the neutral line is more difficult to solve, unless the transmission line is reconstructed.

Light switch installation note:

The light switch or socket is installed in a different place, and it should be installed according to the area of use. If the bathroom is a relatively humid place, try to install it above the meter, away from the wet area, and buy a waterproof or splash-proof box to ensure the safety of use. The switch and socket in the kitchen should be kept away from gas pipes and open flames, away from high temperature areas, to ensure the safety of use.

According to the habit of installation, most people are used to using the right hand, the door is also to the right, the switch is best installed on the left side of the door, so that the switch light is much easier. It is best to install dual or multi-control switches to save the time of walking back and forth.