Lamp is probably made by Qianshun Lighting. Weird that they mark it as being 230V, as L72 90W LPS lamps operate at 112V and 950mA when at full chooch. Will be interesting to see if they used proper sodium resistant aluminoborate glass; you can tell if they didn't cuz the glass will go brown after a few thousand burn hours.
That’s what I think too. The weird thing is that they mark it as 112V running voltage on the datasheet, but the lamp itself is printed with the incorrect voltage.
Ey man thankyou! Sorry for not noticing your video for a while because i already haven’t been active for over more then a month. But nevertheless nice video, and sox would forever be one of my favorite lamps! 👌
The name of the fixture in the description makes me think it came from San Diego CA. They used to have lots of LPS in the areas around the Palomar observatory in San Diego County. There also used to be LPS fixtures in the city of Long Beach CA as well. The one thing about LPS is that even though they are the most efficient discharge light source, the lamps will start drawing more wattage as they age to compensate for lumen depreciation. Rather than aging resulting in lower lumen output, the lumen output remains the same throughout the life of the lamp, but the power draw will increase as it gets closer to EOL.
They were seen around San Diego County fairly commonly (mine actually came from Escondido). As far as the lamps aging, HPS does a similar thing to the point where the arc voltage the ballast is providing is not high enough for the lamp and the lamp extinguishes.
@@HIDLad001Escondido is in close proximity to Mount Palomar and observatory. I remember seeing LPS roadway fixtures there many years ago. They may have all been replaced by LED by now.
Very nice street light! Low-pressure sodium lighting is pretty interesting, especially how it only emits one wavelength of light. Nice shots of the lamp at the end of the video! The design of this fixture is neat too, simple but effective! I wonder if there were any LPS cobra-head lights. I think an 18w SOX would be able to fit in even a small one, and a large model could probably support a 36w. Of course, that would be very impractical, but it sure would be cool!
As far as commercially produced ones, no. There were some in-house conversions that a few utilities did to convert regular cobraheads (like GE M250s and AEL 125s) to SOX. Some apparently existed in Long Island and near Flagstaff (I was told by a friend), but I don’t know if any have survived. The other design of SOX streetlight that was commercially produced were the “UK style” SOX lights made by AEL and Norelco. UK manufacturer Thorn even sold them in the US under the name “Atlas”.
It is very rare in most of the US. It was pretty popular (compared to everywhere else) in Southern California, parts of Arizona, and Long Island, New York.
Lamp is probably made by Qianshun Lighting. Weird that they mark it as being 230V, as L72 90W LPS lamps operate at 112V and 950mA when at full chooch. Will be interesting to see if they used proper sodium resistant aluminoborate glass; you can tell if they didn't cuz the glass will go brown after a few thousand burn hours.
That’s what I think too. The weird thing is that they mark it as 112V running voltage on the datasheet, but the lamp itself is printed with the incorrect voltage.
Ey man thankyou! Sorry for not noticing your video for a while because i already haven’t been active for over more then a month. But nevertheless nice video, and sox would forever be one of my favorite lamps! 👌
The name of the fixture in the description makes me think it came from San Diego CA. They used to have lots of LPS in the areas around the Palomar observatory in San Diego County. There also used to be LPS fixtures in the city of Long Beach CA as well. The one thing about LPS is that even though they are the most efficient discharge light source, the lamps will start drawing more wattage as they age to compensate for lumen depreciation. Rather than aging resulting in lower lumen output, the lumen output remains the same throughout the life of the lamp, but the power draw will increase as it gets closer to EOL.
They were seen around San Diego County fairly commonly (mine actually came from Escondido).
As far as the lamps aging, HPS does a similar thing to the point where the arc voltage the ballast is providing is not high enough for the lamp and the lamp extinguishes.
@@HIDLad001Escondido is in close proximity to Mount Palomar and observatory. I remember seeing LPS roadway fixtures there many years ago. They may have all been replaced by LED by now.
@djm5k There are still some around.
Very nice street light! Low-pressure sodium lighting is pretty interesting, especially how it only emits one wavelength of light. Nice shots of the lamp at the end of the video!
The design of this fixture is neat too, simple but effective! I wonder if there were any LPS cobra-head lights. I think an 18w SOX would be able to fit in even a small one, and a large model could probably support a 36w. Of course, that would be very impractical, but it sure would be cool!
As far as commercially produced ones, no. There were some in-house conversions that a few utilities did to convert regular cobraheads (like GE M250s and AEL 125s) to SOX. Some apparently existed in Long Island and near Flagstaff (I was told by a friend), but I don’t know if any have survived.
The other design of SOX streetlight that was commercially produced were the “UK style” SOX lights made by AEL and Norelco. UK manufacturer Thorn even sold them in the US under the name “Atlas”.
Here in Europe (in some countries only) SOX/LPS streetlighting was very popular, but for US Standards, this is a very, very rare thing, I suppose?
It is very rare in most of the US. It was pretty popular (compared to everywhere else) in Southern California, parts of Arizona, and Long Island, New York.
You wont need more caulk in the glass as it faces down, you want water to drain out of it if it ever gets in
i like how these start up