The voltage drop limits are defined when editing the Main Supply. The engineer may also alter the voltage drop limits of an individual circuit from the circuit editor under the voltage drop tab (1).

For distribution circuits there is an option to split the voltage drop limit between the distribution circuit and its final circuits. This split limit is not a regulation requirement but is set by the designer to warn him or her about circuits exceeding the specified voltage drop percentage value, allowing for finer control of the voltage drop across circuits. By default the split limit is enabled and this can be disabled by selecting the option Without split of the voltage drop limit (2). For this tutorial we will leave the split limit to 1.5% per phase of the distribution circuit and the remaining 3.5% to the connected final circuits (3).