Myth 1:
"As long as the water heater bought in the big shopping mall is a qualified water heater recognized by the state, just buy it and put it at home and use it with confidence! Unsafe water heaters will not be sold in shopping malls! And many shopping guides in the mall also say so! "
Case: According to Hebei Zhao Yan Evening News, on May 2, 2003, Guo Qingzhi, a retired cadre of the provincial library, was electrocuted while taking a bath at home! Appraised by Hebei Quality Inspection Institute, the heat preservation index of the water heater meets the national requirements, indicating that the water heater is qualified! The real killers are unqualified power sockets and irregular household circuits. The consumer sued the manufacturer in court, and it was fruitless!
Experts remind: At present, the safety standard of electric water heaters in China is equivalent to the international IEC standard, but the international standard is based on the fact that there are no potential safety hazards such as "aging switch sockets, unqualified switch sockets, wrong decoration and wiring, power overload and neighbor stealing electricity". That is to say, even if the water heater is qualified, the safety protection of ordinary water heaters will not work when the above-mentioned hidden dangers of electricity consumption occur at home.
Myth 2:
"The water heater I bought has a leakage protector and a computer alarm. The factory promoter said that it is no problem to take a bath with these two protections!
Case: According to CCTV, on May 2, 2004, Hu, a resident of chibi city, Hubei Province, was electrocuted while taking a bath at home! The manual of the water heater indicates that the brand water heater has "intelligent leak-proof technology", and the family bought it because they believe in this function! Hubei Provincial Quality Inspection Bureau said that the cause of the accident was the short circuit between the plug fire wire and the ground wire of the brand water heater, which led to the electrification of the ground wire. The so-called anti-leakage technology of the manufacturer had no effect on this situation!
Experts remind: At present, the safety protection devices of water heaters are classified as follows:
Leakage protector-to prevent leakage accidents caused by the failure of the water heater itself (daily maintenance is required)
Anti-electric wall device-effectively prevent the leakage accident caused by the failure of the water heater itself (maintenance-free)
Effectively prevent electric shock accidents caused by hidden dangers of electricity consumption environment (such as aging of switch sockets, unqualified switch sockets, wrong wiring in decoration, overload of electricity consumption, electricity stealing by neighbors, etc.). )
Safety early warning device-monitor the household electricity consumption environment and give an alarm immediately if there is any problem.
Myth 3:
"My water heater is a professional manufacturer of foreign water heaters with many years of history. Before installation, they check whether the ground wire of my house is reliable before installation. Is this safe? "
Case: According to Qilu Evening News, one day in April 2006, Ms. Zhang, who lives in Huaiyin District of Jinan City, was electrocuted while taking a bath at home. Experts from the Provincial Quality Inspection Institute found that the main cause of the accident was the short circuit between the ground wire and the zero wire caused by the aging of the electrical wiring in the home. According to Ms. Zhang, there was no problem with the wires at home when it was first installed.
Experts remind: At present, when all foreign water heater manufacturers introduce their products into China market, they have not made effective improvements in safety protection in view of China's current special national conditions, and some even have no basic leakage protectors. The requirements of developed countries for building electricity environment are much higher than those of developing countries. In contrast, domestic water heater manufacturers are much more mature in safety protection technology.
Myth 4:
"I always pay attention to taking a bath at home. I always remember to unplug the power before washing. (Occasionally, family members, the elderly or children forget to unplug) "
Case: According to the report of Jinan Times in 2005, an uncle's building in tianqiao district, Jinan was "electrified", and the household solar water heater was electrified when taking a bath. Later, the people in the district power supply station found that it was the neighbor who connected the ground wire at home to the water pipe, and the current reversed through the water pipe! Because the current is small, I can't feel it at ordinary times, but when I take a shower, my whole body is covered with water, and small current can also cause harm to the human body.
Experts remind: Water heaters are different from other household appliances, because people are covered with water when taking a shower, and it will be difficult to escape once it leaks. Therefore, as long as there is an environmental hazard of 1%, it may bring a security threat of 100%. It is also based on this consideration that the China Consumers Association solemnly issued the Warning of Safe Consumption of Water Heaters, which strongly advises consumers to buy water heaters with good safety technology and environmental protection and leak-proof devices to provide security for family bathing. According to reports, only Haier's patented technology has this function of preventing environmental leakage.
Myth 5:
"Every time I take a shower, I use the experimental switch of the leakage protector under the power plug as the power switch. Press it in the shower, jump up, and then press it again when heating. Is this safe? "
Case: According to Life Times,1February 8, 1997, Ms. Li Xiumin in Beijing was electrocuted while taking a bath at home. According to the organizer of Fengtai District Court, there are two reasons for the accident: First, when Ms. Li was taking a bath, the leakage protector was frequently used as a switch because it was not maintained according to the instructions, and it lost its protection function when it leaked electricity. Second, the quality of the power socket in Ms. Li's home is unqualified.
Experts remind that the leakage protector is a general safety protection device for ordinary water heaters, which functions like an air switch. When the water heater itself fails, it will immediately cut off the power supply to protect human safety. But it can't be used as the switch of water heater, and frequent bouncing will lead to decreased sensitivity or even failure of electrical components. At the same time, the leakage protector has no protective effect on the accident of grounding wire being charged and hurting people.
Myth 6:
"I think solar water heaters and electric water heaters are the same as TV sets. Just turn off the power switch on the machine when there is no power. Unplugging often affects the life of the machine, which is too much trouble! "
Case: According to shenyang evening news, on July 29th, 2002, Cui Mou, a 26-year-old young man who lives in Xinmin, Shenyang, was electrocuted while taking a bath, and his grandmother was electrocuted while rescuing her grandson, resulting in the death of both grandparents and grandchildren on the spot. Appraised by the Quality Inspection Association of Liaoning Province, the accident was due to the wiring error in home decoration, and the live wire was connected to the ground wire (that is, the right hole and the upper hole of the three plugs were connected backwards). Although the switch was turned off before taking a shower, it didn't help!
Experts remind: when the zero line in the home is reversed, the current will not be cut off after the switch is turned off. The danger of taking a bath is the same as leaving the switch on. In addition, turning off the switch can't avoid the reason why the grounding wire is charged.
Myth 7:
"My family lives in an old house and there is no ground wire at home. Even now, it doesn't work. How come some promoters in shopping malls say that they can install water heaters, while others say that they can't? There is nothing wrong with me pretending to be them. "
Case: According to Jinghua Times, on October 30th, 2004, a pregnant woman surnamed Gao was electrocuted while taking a bath at home in Fengtai District, Beijing. The engineer said that Ms. Gao had no ground wire at home. In this case, if the heater of the water heater is broken, the leakage protector will not work!
Experts remind: In principle, if there is no ground wire at home or the ground wire is unreliable, you can't install a water heater. At present, only Haier electric wall-hung boiler manufacturers clearly stated that the safety of consumers can be guaranteed when they use it without ground wire at home.
Myth 8:
"I use a solar water heater at home, and I am definitely not afraid of electricity!"
Case: According to Sina News Center, all solar water heaters on the market now have electric heating interfaces, but only a few companies have passed 3C certification. If consumers use electric heaters without compulsory certification, it is easy to cause electricity leakage and fire accidents.
Experts remind: At present, the solar water heater industry is still very irregular. There are thousands of manufacturers in China, and their production technologies are mixed. Many water heaters that do not meet the national standards are still on the market. Therefore, you need to be more careful when buying solar water heaters now.