 Although they were robust utility buildings, generally small in scale, elegant proportions and such details as finely crafted brickwork distinguished them.By 1933 an additional substation was urgently required at Kedron in order to relieve a serious overload being carried every afternoon by the substation at Windsor, where the 500 kW mercury arc rectifier plant was carrying 700 volts.Council minutes suggest that provision for this new substation should have been made two or three years prior to 1933, but that the expenditure was delayed for financial reasons until it became essential for safety.