The term "220V" refers to an electrical voltage level commonly used in many countries for household and industrial power supply. It indicates that the electrical system operates at 220 volts, which is a measure of electrical potential. This voltage is typically used for larger appliances, such as washing machines, air conditioners, and ovens, as it allows them to operate more efficiently. In contrast to the lower voltage systems, like 110V used in some regions, 220V systems can deliver more power with less current. This means that wires can be thinner, reducing material costs and improving safety. Understanding voltage levels is essential for proper electrical installations and appliance compatibility.