Core Viewpoint - The article highlights the safety hazards associated with improper use of power strips, which can potentially lead to household fires. It emphasizes the importance of using electrical appliances safely and correctly to prevent such incidents [1]. Group 1: Recent Incidents - A fire in Zhoushan, Zhejiang, was initially determined to be caused by a power strip short circuit igniting nearby combustible materials [2]. - In June, a fire in a residential building in Shanghai was attributed to a faulty power strip, fortunately resulting in no casualties [2]. Group 2: Common Mistakes - The most dangerous mistake is the continued use of the "universal power strip," which has been banned since June 2010 due to its design flaws that increase fire risk [4][7]. - Other common errors include using aging power strips, connecting multiple high-power appliances to a single strip, and using substandard products made from non-flame-retardant materials [2][8]. Group 3: Safety Recommendations - To ensure electrical safety, it is recommended to use high-power appliances with dedicated power strips, unplug devices when not in use, and replace aging power strips immediately [8][9]. - Specific habits to adopt include using both hands when unplugging devices, ensuring hands are dry, and avoiding modifications to electrical plugs [9].

Core Viewpoint - The article emphasizes the dangers of using universal power strips, which have been banned since June 2010 due to their design flaws that increase the risk of fire significantly compared to regular power strips [3][5]. Group 1: Risks Associated with Universal Power Strips - Universal power strips have a small contact area with electrical plugs, leading to the potential for electric arcs and high temperatures, which can cause fires [3]. - Fire incidents from power strips are often due to common mistakes, such as using aging power strips, connecting multiple high-power devices to one strip, and continuing to use banned universal power strips [3][5]. Group 2: Other Safety Hazards with Power Strips - Overloading power strips is a significant risk; common household strips typically have rated currents of 6A, 10A, and 16A. For example, connecting a 1500W electric kettle and a 1000W microwave to a 10A strip can exceed its 2200W limit, leading to overheating and potential fire [5]. - The use of inferior products is another concern, as some manufacturers use non-flame-retardant materials or substitute copper with aluminum for wiring, increasing the risk of short circuits and fires under high load [8]. - Ignoring the lifespan of power strips is critical; they should be replaced every 3 to 5 years, and signs of wear such as blackened sockets or loose plugs indicate that they should be discarded immediately [8].