Street light supplies - 11/11/03 11:19 PM
Prompted by the Street PC thread.
What distribution systems are commonly used for street lights in U.S. cities?
Are lights normally 120 or 208V units connected on a 120/208V 3-phase system? If that guy with the PC is tapping off a 120V utility outlet in the lamp base, this would seem to be the case.
Does anywhere run lights on a 277/480V network?
How about the transformers stepping down from HV? Is there a typical arrangement of one xfmr per X blocks in the average-size city?
What distribution systems are commonly used for street lights in U.S. cities?
Are lights normally 120 or 208V units connected on a 120/208V 3-phase system? If that guy with the PC is tapping off a 120V utility outlet in the lamp base, this would seem to be the case.
Does anywhere run lights on a 277/480V network?
How about the transformers stepping down from HV? Is there a typical arrangement of one xfmr per X blocks in the average-size city?