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].