A "220-volt" system refers to an electrical supply that operates at a voltage level of 220 volts. This voltage is commonly used in many countries for household appliances and industrial equipment. It is higher than the standard 120-volt supply found in places like the United States, allowing for more efficient power delivery, especially for larger devices. In a 220-volt system, appliances such as washing machines, air conditioners, and electric ovens can operate effectively. These devices are designed to handle the higher voltage, which can lead to reduced current flow and lower energy losses. Proper wiring and safety measures are essential to prevent electrical hazards when using 220-volt systems.