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My 1992 M-250R2 Hanging Out on the New Arm! I've had this arm about six months now but it's new to the backyard! It was sitting in my shed with my other mast arms and lately I'd been thinking about how cool it would be to replace that 24" NEMA head arm with a "real" streetlight arm. Well, it was a beautiful day today, sunny and approached 60 degrees (warmest we've seen in months) so I took action! This style arm was used a LOT by New England Electric System. Rhode Island is FULL of these arms. Originally almost all had M-250A2 FCOs, but a small number had AE 313 FCOs on them (all of these 100/175W MV) and some were installed with 80s HPS M-250R2s (typically FCO in the 80s) and some installed in the late 80s had M-250R2 or 113 drop lens lights, typically in 100W MV. In the 90s, they installed a lot of 50 and 100W HPS M-250R2s and 113s on these arms and 50W Cooper OVCs on these arms. NGrid had even installed some 400W HPS M-400s on them in the late 2000s in Providence and they held up! These arms seem kinda wimpy for 400W HPS IMO. Said arms now have LEDs though since Providence converted in 2016. Keywords: American_Streetlights

My 1992 M-250R2 Hanging Out on the New Arm!

I've had this arm about six months now but it's new to the backyard! It was sitting in my shed with my other mast arms and lately I'd been thinking about how cool it would be to replace that 24" NEMA head arm with a "real" streetlight arm. Well, it was a beautiful day today, sunny and approached 60 degrees (warmest we've seen in months) so I took action!

This style arm was used a LOT by New England Electric System. Rhode Island is FULL of these arms. Originally almost all had M-250A2 FCOs, but a small number had AE 313 FCOs on them (all of these 100/175W MV) and some were installed with 80s HPS M-250R2s (typically FCO in the 80s) and some installed in the late 80s had M-250R2 or 113 drop lens lights, typically in 100W MV. In the 90s, they installed a lot of 50 and 100W HPS M-250R2s and 113s on these arms and 50W Cooper OVCs on these arms. NGrid had even installed some 400W HPS M-400s on them in the late 2000s in Providence and they held up! These arms seem kinda wimpy for 400W HPS IMO. Said arms now have LEDs though since Providence converted in 2016.

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Filename:022217_002.JPG
Album name:Mike / American Streetlights
Keywords:American_Streetlights
Filesize:636 KiB
Date added:Feb 22, 2017
Dimensions:2048 x 1536 pixels
Displayed:104 times
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=21509
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Comment 1 to 6 of 6
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HPSM250R2   [Feb 22, 2017 at 10:24 PM]
This M250R2/arm combo looks great!Very Happy
It would be cool if it was on a real pole, but you'll have poles on your property when you move out. I like this arm. Who makes it? I don't know if you have already said who makes it before.
streetlight98   [Feb 22, 2017 at 11:51 PM]
Thanks! I really like it too. It was a tie between these and the 6ft upsweep I got from CT but the upsweep had a higher rise and I didn't want the light too much higher up or it would be hard to reach on the rickety old wooden A-frame ladder lol.

I'm not sure who makes this style arm and neither does Joe, but he said these were used throughout the 80s with lower wattage lights in NEES territory. NECo used these arms to replace incandescent lights on short 4ft arms up until around 1991-ish.

Here's an AE 113 on one of these arms two streets over from mine.

An M-250R2 on this style arm (mounted on a real pole so you get an idea on what these look like with an R2 at a "real" height)

Same arm with a Cooper OVC (50W HPS like mine).

Originally, almost all of these arms originally held 100/175W MV GE M-250A2 FCOs.

But a few had 100/175W MV AE 313 FCOs.

Here's a Model 25 on one of these arms. Notice the plastic lens. This is an LED now BTW.

Here's an M-400 NGrid installed on one of these in Providence. 400W lights with glass lenses seem to be a little too heavy with these arms. You can see how the arm is beginning to sag.
lite_lover   [Feb 23, 2017 at 04:45 AM]
Looks nice Mike,the arm gives the fixture pretty good height off the deck.
streetlight98   [Feb 24, 2017 at 10:37 PM]
Thanks Darren! Yeah this arm is one of my flatter ones. I could've used one of my upsweep arms but I would have had to drill closer holes for the lag bolts and the rise on the arm would've been higher. Once I get the truss arm fixed up i'll have to try that lol. That's got a ~5ft rise and is 10ft long! Shocked
joe_347V   [Feb 27, 2017 at 10:49 AM]
Nice install Mike! I suppose you could replace the drop lens with one of the FCO glasses to emulate having a FCO M-250R2 on it. That truss arm would look pretty interesting once you fix it up. Has a pretty steep rise too. Ours have a 2ft rise over the 6ft length of the arm.
streetlight98   [Feb 27, 2017 at 11:19 AM]
Thanks! I actually have two FCO M-250R2s. It's an M-250A2 that I'll be putting on this. Yeah I like the steep rise of the arm but it's not too steep (I'd consider an arm with a steep rise than length to be too steep)

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