Author Topic: Identifying models of lights  (Read 3408 times)
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Identifying models of lights « on: June 27, 2006, 08:29:08 PM » Author: NiMo
Some posters here (yeah, you know who you are Cheesy )have wrongly identified various different models of streetlights.  For example, there is confusion between the General Electric M-400A1 Powr/Door and the M-400 split-door.  About the same time the M-250R was introduced, the M-400 was redesigned as practically a clone to the M-400A with notable exceptions.  The most obvious one being the rear door has no vent holes and a simple spring latch rather than a captive screw (early Powr/Door units had no vent holes, either, but had the captive screw). Construction features of the M-400 split-door include a taller PE receptacle, a longer upper "lip" on the top housing, and a housing-mounted ballast.

Another common one is the Westinghouse OV-25.  Some posters mistakenly date them as "1964" when the most obvious telltale features (PE receptacle position and lighter silver finish) give it away as a 1970s lume.  Remember, if the P-cell is in the middle, like on the original '57-64 version, then it is a true '64 OV-25.  IF the P-cell is moved back about 10" with the darker silver, then it's a mid-to-late 60's unit.  If the P-cell is all the way back, then it's a 1970's unit.

And yet another mistake is the Silverliner redesign of the 1979-1980 era.  All Westinghouse and Crouse-Hinds catalogs state that the models are OV-15 and OV-25.
« Last Edit: June 27, 2006, 08:31:21 PM by NiMo » Logged

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Re: Identifying models of lights « Reply #1 on: June 30, 2006, 06:33:58 PM » Author: Silverliner
I agree. I always go by the manufacturer designations of the different luminaires. The compact square Silverliners that came out in 1979, I call them "later style OV-15/OV-25s". You can tell a 1979 square OV-15 or OV-25 from 1980 and later ones, by not having a NEMA tag. Westinghouse was slow in adopting the NEMA tag system.

BTW, the first of the 1970s OV-25s had the dark silver finish. Then a bit later the brighter hammered silver appeared.

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Re: Identifying models of lights « Reply #2 on: October 08, 2018, 08:49:11 PM » Author: Fluorescent05
Were OV-15s still made in 1983?

Don't be fooLED, T8 IS the worst thing to do to a magnetic T12 fixture.

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