You can first know: (1) Mobile phone chargers are exchange-type power suppliers. When not in use, they consume very little power, which has no impact on the power price.
(2) As long as any electrical appliance is inserted, internal components will be consumed at any time, and it is not just a mobile phone charger.
(3) People can follow the principle of "5 not 1 without" to prevent electric appliance fire.
The video and message "The mobile phone charger must be plugged in forever" is transmitted online. It says that the phone needs to unplug the charger after charging. If the phone is plugged in, the fee will increase, and due to the consumption of internal components, it may cause fire. After verification, mobile phone chargers are currently exchange power supplies, with small size and light weight. When not in use, the charger consumes very little power and will not have too much impact on the power price. As long as any electrical appliance is plugged in, the internal components of the plug will be consumed at any time, not only for mobile phone chargers. People should avoid electric fires at home. They can follow the principle of "5 not 1 not 1" to ensure that the power is safe and safe.
Will there be fire risk if the mobile phone charger is plugged in?Original version: Why is the charging head of a mobile phone strictly prohibited from being plugged in? Old electricians will never be like this, it is very dangerous
Mainly circulated this video and circulated on social platforms:
What is the original source of the network message?
MyGoPen uses the title of online videos to search and find the video "Why is it forbidden to plug in the mobile phone charging head on June 1, 2023 by YouTube user "Hydroop Repair"? "Old Electricians will never do this, it is very dangerous", after reviewing it, it is confirmed that it is the original source of the online video.
If you use the simple word search instead, you can find the user "Beijing Water and Electricity Repair" of the audio and video platform "Douyin" and the same as on June 1 The same video is released every day. It sounds that the phone needs to unplug the charger after charging, otherwise there will be current even if it is not charged. There are three hazards when plugging in the power:
(1) If there is current, it will consume electricity, and the cost will increase in the year;
(2) Micro current will consume the charger, and once it ages, it will cause fire;
(3) The charger is always plugged in, and the time will be loose, and friction will cause fire.
for the three harms raised to online videos, MyGoPen asked Ashin, the webmaster of the "Practical Electronic Test Room" to assist in checking whether the video points are correct.
Q1. Will the charger be plugged into the socket continue to consume electricity? How much impact will it have on the cost?Assistant Assistant said that when the charger is inserted into the socket at normal times, it will actually consume some current. However, the so-called "power consumption" before is mainly used for charging heads that include linear transformers. Currently, most power sources with only traditional audio use linear transformers.
Ashin Assistant explains that the circuit design of linear transformer will indeed consume power, but the chargers currently used by mobile phones are all exchange power suppliers. The characteristic of this type of transformer is that it has a small size and light weight. When not in use, the power consumed by the charging head itself is very small and can be almost negligible, so it has little impact on the power.
Q2. Is the statement that "when the charger is plugged in, it will cause fire due to internal components consumption" correct?Assistant Assistant believes that plugging the charger into the internal components will consume. This statement is not wrong, but it is not only suitable for mobile phone chargers, but all electronic products will. Online videos deliberately emphasize the possibility of fire caused by chargers. In fact, any appliance will have this risk.
Q3. Is the statement that "the charger may be loose due to long time, and ignition can cause fire and disaster during friction" correct?Assistant Assistant Professor Asin said that if the online video refers to "there is a slack between the plug and the socket", there will be sparks. If the spark is too big and there are flammable items placed nearby, there will be a chance of fire.
Assistant Assistant Assistant explained further. He had filmed a video discussing "Inrush current". From 7:43, there was a screen that captured the sparks between the plug and the socket. However, this is actually a normal phenomenon. For example, the charger of the laptop is not turned off, so plugging in the power supply means turning off, and there will be sparks at the moment of insertion (the greater the current, the greater the spark).
If it is a fan head, because there is another switch on the base of the fan itself, plugging the plug will not cause sparks; however, the moment the public presses the switch, there will be sparks, but the plug has been inserted so they cannot see it.
Generally speaking, the current may exceed the normal current capacity when the plug is inserted, but this does not mean that the socket in the home will be damaged. It just generates a little spark at this moment, so you don’t have to worry too much; however, if there is a gas leakage at home, you should be very careful. As long as there is a spark, an explosion will occur, so safety publicity will remind the public that if there is a gas leakage, don’t turn off the power supply, because turning off the power supply will have sparks, which will lead to an explosion.
Ashin Assistant Teacher finally recharged, the socket can easily increase the chance of spark generation. He had repaired a USB charger in the past, which sounded sizzling when plugged in. The charger uses a foldable plug. This type of design is because its lines must be connected internally to one or two connections before they can be connected. It is not recommended for public purchase..
How to prevent electric appliance fires, you can refer to the Ministry of Interior’s Ministry of Home Affairs’ special release of “5 not 1 not 1 not” disaster prevention knowledge on Facebook powder in January 2023, including:
"5 not 1 not 1 not 1 not ” disaster prevention knowledge(1) The power socket does not need to be plugged in
(2) The power supply does not exceed the load, and the load does not exceed the load.
(4) The plug is not damp and dirty, and the combustible material should not be placed around the appliance.
(6) Do not use electricity without safety marks.
Conclusion
In summary, when a mobile phone charger is not in use, it consumes little energy and has no impact on the price; as long as any electrical product is inserted, the internal components will be consumed over a long time, not only for mobile phone chargers. The public can follow the principle of "5 not 1 not 1" to avoid electric fire.