Urban Service Lines

Urban services line (USL) means a boundary which distinguishes areas which are to remain rural from areas planned to accommodate urban densities of development the pattern of existing urban services and those projected to be established in the same planning period.

HV Powerlines: High voltage (HV; subtransmission less than 100 kV; subtransmission or transmission at voltages such as 115 kV and 138 kV), used for sub-transmission and transmission of bulk quantities of electric power and connection to very large consumers.

LV Powerlines: Low voltage (LV), less than 1000 volts, used for connection between a residential or small commercial customer and the utility.

Pole Fuse: Before the electric line is connected to the meter in a house, a fuse of rating (≈ 50 A) is connected in the live wire at the pole or just before the meter. This fuse is called the pole fuse.

Service Main: The overhead line or U.G cable connecting the supplier’s distribution line to the consumer’s premises is called service mains or service connection or service line. The service line terminates at the point where the supply conductor enters the consumer meter.

Point of Attachment: The point at which aerial conductors of the service line or aerial consumers mains are terminated on a customer’s building, pole or structure.

Mains Connection Box: A boxlike enclosure with a removable lid/plate/door or other means of access within which electric connections between sections of cable can be made

Power Meter: One of the most useful and simple instruments to measure electrical power when no deeper analysis of the measured data is required. It measures the voltage (V) and current (A) and derives from these the most important power results.

Meter Box: A meter box houses an electric reading meter, the device that measures electrical consumption.