Suurim lubatud pingelangus

maximum voltage drop across the circuit that must not be exceeded. There are two voltage drop limit settings that may be applied; one for sub-main circuits, and one in each Distribution Board or Consumer Unit for final circuits connected to that board; The settings should limit the overall voltage drop to the required level; default settings of 1.5% for sub-main circuits and 2.5% for final circuits, giving an overall limit of 4% may be applied