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A Properly selected and used extension cords are safe. The key is to choose the right extension cord for your needs and make sure it can withstand the electrical load of the connected device to avoid overloading. Indoor extension cords should meet standards for indoor use, while outdoor extension cords need to be waterproof, UV-resistant and properly installed to avoid exposure to sun or rain. Regularly inspecting the external condition of extension cords, especially the plug and socket sections, will help detect and replace damaged parts in time and minimize the risk of electric shock or fire. Avoiding prolonged or overstretched use of extension cords and tying cords under heavy objects can reduce the likelihood of cord damage and safety incidents.

A A cord reel can make it easier to coil and store extension cords. Extension cords should always be stored indoors. Unplug extension cords when not in use and remember to pull the plug, not the cord, when disconnecting from an outlet. Throw out any damaged cords immediately. 

A According to the National Fire Protection Agency (NFPA), extension cords are designed for temporary use and, unlike standard power cords, should never be used to permanently connect a major appliance. NFPA emphasizes that choosing the wrong extension cord for the situation can increase the risk of shock, overheating and equipment damage.