High-voltage refers to electrical systems or equipment that operate at a significantly higher voltage than standard household levels. Typically, voltages above 1,000 volts for alternating current (AC) and 1,500 volts for direct current (DC) are considered high-voltage. This level of electricity is used in power transmission and distribution to efficiently transport electricity over long distances. High-voltage systems require special safety measures and equipment to prevent accidents and ensure proper functioning. Components like transformers, insulators, and circuit breakers are designed to handle these elevated levels of electricity. Proper training and precautions are essential for anyone working with high-voltage systems to avoid serious hazards.