There are many configurations of utility wires on poles so it would not be practical to diagram them all. However, there is a basic setup that is common in residential areas. The picture to the right demonstrates that the electrical lines are the highest lines on a pole, provided there is electric service in that neighborhood.

Typically, there are two sets of power lines, primary and secondary. The primary distribution (1.) is on top and carries electricity from substations to consumers. The voltage ranges from 4,000 to 35,400. A static, ground or neutral wire often accompanies the primary wire. The secondary lines (2.) are usually are in a set of three horizontally parallel wires with electricity reduced to 120/240V for consumer use. The service drop runs from the secondary to the house. Further below the electric lines are the telephone (3.) and cable television (4.) lines (the thickest cable). Street light circuits and fire alarms can also be found on utility poles.