Shoeboxs, a newer AE 115, and NVNs. The AE 115 replaced a shoebox back in 2012 and they remounted the Old ballast onto the new pole with the AE 115. Zoom in and you should be able to see it
Yeah, this replaced an old shoebox that likely had the pole mounted ballast (and photocell on top?). What is the point of an external ballast, doesn't this aEL cobra include one? Many shoebox replacement poles have this round can on the replacement poles too, the same wiring configuration is maintained...?
I guess that's the mystery lol. The AEL cobra should have included it's own ballast, even the shoebox is new enough to have been designed for a internal ballast.
IIRC the last roadway light that needed a external ballast is the OV-25 remote that was made in the 60s. For a while after the streetlight manufacturers offered ballastless cobraheads for replacing a external ballasted fixture.
Yeah once cobraheads came out, they had internal ballasts. Westinghouse offered a remote ballast OV-25, which is basically an OV-25 with the ballast section omitted. GE continued to offer the Form 400 IIRC. Then by the mid-late 60s GE just started offering empty cobraheads as replacements for damaged remote ballast fixtures or if a municipality had money to waste and wanted to "upgrade" to cobraheads and ditch their "outdated" clamshells or without rewiring their poles.
Not sure when Westinghouse stopped offering the remote ballast OV-25, but it was made for a while alongside the integral ballast OV-25. Remote ballast small wattage cobraheads were never made, but remote ballast small wattage clamshells were, though they're uncommon since most places continued using incandescents for lower light levels or they used incandescent style fixtures with MV gear (such as a gumball or admiral's hat; the NEMA bucket optics didn't develop until the 60s AFAIK, by which time cobraheads were becoming mainstream).
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IIRC the last roadway light that needed a external ballast is the OV-25 remote that was made in the 60s. For a while after the streetlight manufacturers offered ballastless cobraheads for replacing a external ballasted fixture.
Not sure when Westinghouse stopped offering the remote ballast OV-25, but it was made for a while alongside the integral ballast OV-25. Remote ballast small wattage cobraheads were never made, but remote ballast small wattage clamshells were, though they're uncommon since most places continued using incandescents for lower light levels or they used incandescent style fixtures with MV gear (such as a gumball or admiral's hat; the NEMA bucket optics didn't develop until the 60s AFAIK, by which time cobraheads were becoming mainstream).