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Mercury vapor pole lantern

Mercury vapor pole lantern

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A daytime photo requested by LG user Blake. You can view a nighttime running photo here. The description copied from the other photo follows:

Crappy title, but that's literally all I know about this thing.

This is one of three dual-MV pole lanterns that light the walkway out front of my university residence. They run alongside three dual-HPS lanterns. They're running phosphor-coated lamps that are somewhere around the 4000k range. Between that and the diffuser, they cast a rather useless amount of light compared to the HPS units, but they're a pleasure to look at.

Before I joined this web site I was not aware that MV was being phased out, and indeed I did not notice it's disappearance. I remember when I was little (we're talking the mid-late 1990s) MV ruled about half of street lighting here. Now, these are the first fixtures I've seen in a very long time. (However, I was surprised upon joining this forum how scarce LPS fixtures were becoming, as LPS is still in wide use here!)

When my interest in electric lighting hit me as a little guy, my main focus was street lighting. I took notice of the different colors of street lights at the time, but of course had no idea what made those differences. And indeed, my favorite street lamps were MV NEMA heads. Daylight was my favorite color of HID and fluorescent lighting. Today my slightly ripened eyes can't really stand anything other than white and cool white, but I always enjoy seeing MV lamps; especially phosphored ones. It's just unfortunate that now that I have the knowledge to even further appreciate MV lamps, they've almost completely disappeared around here.

I wouldn't mind having my own MV set-up. I'd like to get either a 50W lamp and an appropriate ballast or a 100W self-ballasted lamp. Cost kind of prohibits both of those options right now, but I do have a birthday coming up...

Anyway, this picture doesn't really display anything unique or special, rather I just wanted to tell my end of the MV story and how it had an influence on my early childhood interests. Hope you enjoyed. :)

resi2.jpg IMG_0228.JPG IMG_3465.JPG IMG_3459.JPG

Light Information

Light Information

Lamp
Lamp Type:Mercury vapor
Fixture
Fixture Type:Dual-lamp pole lantern
Location:University residence
Optical
Color Temperature:Cool white
Physical/Production
Application/Use:Walkway lighting

File information

File information

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Filename:IMG_3465.JPG
Album name:themaritimegirl / HID Lamps & Fixtures
Keywords:Lanterns
File Size:496 KB
Date added:Apr 18, 2013
Dimensions:2050 x 1537 pixels
Displayed:201 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-78596
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joseph_125
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GoL
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Apr 18, 2013 at 12:37 PM Author: joseph_125
Interesting, this style of fixture is sorta rare since most shoeboxes Ive seen use either a drop lens similar to a cobrahead or flat glass instead.

Fixtures might have been made by Sylvania-Powerlite which was a Canadian streetlight and outdoor light manufacturer since acquired by American Electric.

50w MV ballasts seem to be quite rare though but 100w MV lamps are quite common and for the ballast 100w ballasts are still on eBay or you can use a 70w MH ballast with the ignitor removed or disabled.
themaritimegirl
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Florence


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Apr 18, 2013 at 12:43 PM Author: themaritimegirl
I've heard of people using F40T12 fluorescent ballasts to light 50w lamps. Is that only for testing purposes or is it suitable for long term use? What confuses me is that people use preheat ballasts for such a setup. I would think one would use an instant-start ballast? Is it because the OCV of an instant start ballast is too high?

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streetlight98
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Mike McCann


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Apr 18, 2013 at 01:58 PM Author: streetlight98
Very cool light! I think since the light fixture is boxy, a boxy lens like a canopy light lens would look good on it... I like the NEMA head refractor on it though. I suppose if someone were to get these, a pair of new Formed Plastics closed bottom acrylic lenses woulk work in a pinch. I like the little custom rigged remote PC too lol.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

themaritimegirl
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Florence


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Apr 18, 2013 at 02:14 PM Author: themaritimegirl
They don't look too much like NEMA refractors. They curve up near the top and they have a closed bottom. Unless there are NEMA refractors like that?

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streetlight98
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Mike McCann


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Apr 18, 2013 at 03:26 PM Author: streetlight98
As long as the opening at the top is 12" a standard NEMA refractor will fit. And yep, closed bottom bucket refractors and ones with that curve along the side are made.

the exact refractor or one like it is made my lexalite. see below:
http://www.mylpsolutions.com/sites/default/files/pdfs/240-255_0.pdf

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

joseph_125
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Apr 18, 2013 at 04:04 PM Author: joseph_125
I believe the F40 preheat ballast underdrive 50w MV lamps so it might reduce the lamp life on them. To wire one up, the blue lead goes to the lamp socket hot, black to hot, and white splices in with lamp socket neutral and the neutral wire.

I wonder if 12" glass buckets will also fit.
streetlight98
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Mike McCann


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Apr 18, 2013 at 06:47 PM Author: streetlight98
Sure! The only thing that might pose an issue would be the thickness of the retainign rim. An example would be installing an OV-25 lens on the OVF or OVY, the rim is too thick. I suppose with plastic it could be filed down or sliced a bit to fit the fixture if a lens was desperatly needed.

Please check out my newly-updated website! McCann Lighting Company is where my street light collection is displayed in detail.

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Blake


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Apr 19, 2013 at 02:13 AM Author: LegacyLighting
Hey Trent - thanks heaps mate that is amazing. Rather bland looking but similar in a way to our homegrown Sylvania B2224
themaritimegirl
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Florence


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Apr 19, 2013 at 06:46 AM Author: themaritimegirl
No problem my friend. It is an interesting lantern.

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