44 T. H, HOUGHTON. 



electrically from a platform in the engine room, the risk 

 of accident to the operator being practically done away 

 with, as he has not to handle the actual switch. 



The 5000 volt three-phase current generated at the power 

 house is for the centre of the city proper, conveyed by lead 

 covered cables to substations, where it is converted by 

 motor generators to 480 volt direct current and supplied 

 to consumers either at 480 or 240 volts. For all outside this 

 area the current is transformed by static transformers to 

 415 volts, giving 240 volts to the neutral wire. 



The extension of the area of supply was such that in 1910 

 it was found necessary to increase the pressure for the 

 more distant suburbs to 10,000 volts, and afterwards to 

 10,500 volts ; this, however, was not sufficient, and the 

 pressure has been raised to 33,000 volts, current at that 

 voltage being supplied to works at Granville and the 

 Abattoirs, and will, as soon as material is available, be taken 

 across the Parramatta River to the distributing station 

 for North Sydney. 



Besides the City of Sydney current is supplied to the 

 following municipalities: Alexandria, Annandale, Auburn, 

 Botany, Burwood, Canterbury, Concord, Darlington, Drum- 

 moyne, Enfield, Erskineville, Glebe, Homebush, Lane Cove, 

 Lidcombe, Marrickville, Mascot, Mosman, North Sydney, 

 Paddington, Randwick, Redfern, St. Peters, Strathfield, 

 Vaucluse, Waterloo, Waverley, Willoughby, and Woollahra, 

 the relative number of consumers in the suburbs being 15 

 to 10 in the city. 



The municipalities on the north of the harbour are at 

 present supplied through a submarine cable; theCity Council 

 have, however, erected on the banks of the Parramatta 

 River, at Abbotsford and Gladesville, steel towers about a 

 third of a mile apart, from which the cables will be sus- 

 pended at a height of about 150 feet above the surface of 

 water. 



