It is important to realize that unbalanced networks are not easily manifested in power supplies.
In this document, I am highlighting two cases in which unbalanced networks are perhaps not easily noticeable. In the case of Linden, people may think that the power supply is normal by measuring the phase-to-neutral voltages. In the case of Modderbee, Eskom and officials from the electricity department may think that there is nothing wrong with network when they select the phase-to-phase voltages and notice that it is almost the same.
Perhaps an even more important question is: do the unbalanced networks affect the customers’ electricity bills? The short and simple answer is yes, it does!
