If you’re celebrating the holidays with electric lights and decorations, it's important to follow some safety tips to avoid any accidents. Always use string lights that are designed for indoor or outdoor use, depending on where you'll be hanging them. Inspect your lights before putting them up, and throw out any that have frayed or damaged cords. Don't overload outlets, and use extension cords sparingly. If you must use them, make sure they are rated for the wattage of the lights you're using.