In electrical systems, “hot” refers to a wire or conductor that carries current from the power source to the electrical device or load. It is typically associated with the live or active wire in a circuit, which is energized and poses a potential shock hazard. Hot wires are usually color-coded black or red in residential wiring and are essential for completing the electrical circuit. Properly handling hot wires is critical for electrical safety to prevent accidents, such as electric shocks or fires.