A "240-volt" system refers to an electrical supply that operates at a voltage level of 240 volts. This higher voltage is commonly used in residential and commercial settings for heavy-duty appliances, such as electric dryers, ovens, and air conditioners. The increased voltage allows these devices to operate more efficiently and draw more power compared to standard 120-volt systems. In many countries, including the United States, 240-volt circuits are typically wired using two hot wires and a ground wire. This configuration helps to balance the electrical load and ensures safety. Proper installation and adherence to electrical codes are essential when working with 240-volt systems to prevent hazards.