Wow 2 fixtures close to each other.....By the way David F. You may be wrong about the voltage, we have some members near you, and one of them who used to work in electrical company in your area says most of them are 240 volts and some mostly newer ones are 120 volts from what I was told....
@David; Joe Maurath told me all the lights from the early 60s to the mid-to-late 80s were 240V with a 120V photocell receptacle (though they ironically used multi-volt PCs custom ordered in light gray). The earliest HPS lights were 240V as well but aroeund the late 80s they switched to 120V streetlights and baby blue multivolt PCs. That's when they started using lower wattage HPS lights (after a few "test dummies" were used in the late 70s and early 80s such as 100W ITT 13, 100W M-250R, 100W M-250A2) and they switched to 120V photocells.
Then in the late 90s when NGrid took over, they've used 120V HPS GE lights with the cheapest 120V PCs they can find. At one point when GE moved their plants to Mexico, NGrid had cancelled their "deals" with GE becuase the fixtures were failing left and right so miserably. NGrid started using Cooper lights for that short period of time. Florida Power (another HUGE company with the same sort of deal that NGrid had with GE) had also cut their ties to GE around the same time and GE was loosing so much money that they brought their plant back to the states and probably after much begging and pleading, got Florida Power back and finally NGrid.
These here are hard to tell unless you go up and take a voltage reading. The utility in Boston does not maintain the streetlights which are city owned and maintain by contractors. Looks like the OVZ is a rather new install along with the pole.
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Then in the late 90s when NGrid took over, they've used 120V HPS GE lights with the cheapest 120V PCs they can find. At one point when GE moved their plants to Mexico, NGrid had cancelled their "deals" with GE becuase the fixtures were failing left and right so miserably. NGrid started using Cooper lights for that short period of time. Florida Power (another HUGE company with the same sort of deal that NGrid had with GE) had also cut their ties to GE around the same time and GE was loosing so much money that they brought their plant back to the states and probably after much begging and pleading, got Florida Power back and finally NGrid.
I know the lighting on the mass pike is 277/480.