Paul:
The majority of "street lighting" around here (NJ) is utility owned and maintained. Some is overhead, some is underground, and some is a mix of both. A recent "street scape" project (business area rehabilitation) job utilized utility installed decorative poles (metal) w/ lantern type HID luminaires. They ran PVC to the new poles from the OH grid, and ran triplex to each pole. The ground (earth) consisted of a driven ground rod at each pole.
The utilities also install & maintain parking lot lighting (site lighting). Some consist of metal poles, UG wiring from a pad mount transformer, triplex in the PVC, and a ground rod at each pole. Apparently, the utility is exempt from installing a grounding conductor "pole to pole", and also are not required to "bond" all the rods.
The poles are all individually controlled by a photo cell at each pole/fixture.
Hope this answers your questions.
PS: Almost forgot; I have not come across too many like the photos.
John
[This message has been edited by HotLine1 (edited 06-30-2003).]
