Light switch wall plates are essential components of any electrical wiring system in the USA. These plates are installed over the electrical boxes that hold switches, outlets, and other electrical devices. They not only serve as decorative coverings but also provide insulation and protection to the electrical connections inside. In the USA, wall plates for outlets come in a variety of sizes, styles, and colors to match the décor of any room. They are easy to install and are available in plastic, metal, and other materials.