I take it you live on a busier road. I have wimpy 100w HPS M-250R2s on my street. Those arms are very common here. Lots still have their origional remote ballasts at the mount part.
We don't use 1000w either. For mercury vapor 100, 175, and 400 watts were used. I haven't comfirmed wether or not we used 250w MV becasue I haven't seen one yet.
yea but national grid used to be multiple companies formed into one. Rhode island used to be Narragansett electric and mass was known as Massachusetts electric, they probably had different requirements at the time.
Rhode island was actually two comapnies. If you have ever been to pawtucket, cumberland, woonsocket, or lincoln, you've noticed that FCO ligghts are mainly used. Those towns were serviced by Blackstone Vally Electric, which was a small local company that only serviced towns in that area and was bought out by Narragansett elecrtic, then N-Grid bought them out. On N-Grid's website for RI, it has only 50, 100, 250, and 400 listed for cobraheads and 250 & 400 used for floodlighting.
Massachusetts has 4 big companies and 40 municipalities, the bigger being National Grid, Western Massachusetts Electric(NU), Nstar (who nu is currently in the process of merging with), and Unitil. The 6 municipalities in western mass are, Holyoke gas & electric(my provider at my house), Westfield gas & electric, Chicopee electric light, south hadley electric light, russell municipal light, and chester municipal electric light.
Yep we have some 1000 watt HPS AE 327s