These were installed in Pittsburgh back in the mid 80's and early 90's which eventually subsidized most MV fixtures in the city by 1993. However the mercury vapor series streetlights were still in service until 2005.
These were used by Narragensett electric in the 80's. The HPS switch over happened in the early 90's with Thomas & Betts 125 for 250 and 400w HPS and 113 for 50 and 100w HPS. National Grid took over in the late 90's and has installed only M-250R2 and some Coopers ever since. The cooper installations have died down now so most new lights here are GE
I like these arms, especially in aluminum. In WMECO territory, we have these arms in steel and we also have some that have back braces on 6', 8' and 10' foot arms.
Don't forget the 15 or 20 footer....those are the ones with double guy arms....I saw David F. Post those.....and some has LM Unistyle 400!
Also Devonte (Form10) has some pics of those arms with Line Materials Ovalite clamshells on em! My area also has those n same arms but they all are 4 foot and lack the small bend just below the bracket.............
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Also Devonte (Form10) has some pics of those arms with Line Materials Ovalite clamshells on em! My area also has those n same arms but they all are 4 foot and lack the small bend just below the bracket.............