A load line can refer to different things depending on the context. In electronics, a load line is a line drawn on a current-voltage characteristic graph for a nonlinear device that represents the constraint put on the voltage and current in the nonlinear device by the external circuit
. In electrical wiring, "line" refers to the wires that feed electricity, while "load" refers to the wires that move it along. A line wire carries power from the source to a device or an appliance, while the load wire moves that power to the next device on the chain
. In maritime transportation, a load line is a special marking positioned amidships which depicts the draft of the vessel and the maximum permitted limit in distinct types
