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750w HPS! I have been at this strip mall and I never noticed that this light, lighting a drive by ATM machine, has a 75 tag! [url=http://www.galleryoflights.org/mb/gallery/displayimage.php?pos=-5609] See here [/url] for a pic of a 750w HPS lamp. Keywords: American_Streetlights

750w HPS!

I have been at this strip mall and I never noticed that this light, lighting a drive by ATM machine, has a 75 tag! See here for a pic of a 750w HPS lamp.

New_Streetlight_Pics_008.JPG IMG_8862b.JPG 2011-07-07_17-41-51_760.jpg IMAG1163.jpg imlbdb_16_36.JPG
File information
Filename:2011-07-07_17-41-51_760.jpg
Album name:Silverliner14B / Street Lights
Keywords:American_Streetlights
Company and Date Manufactured:GE
Model Number:M400A2
Wattage:750w
Lamp Type:HPS
Filesize:79 KiB
Date added:Jul 08, 2011
Dimensions:816 x 624 pixels
Displayed:220 times
Color Space:sRGB
Contrast:0
DateTime Original:2011:07:08 00:41:50
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Unknown: 0
Exposure Time:19/15807 sec
FNumber:f/2.8
Flash:No Flash
Focal length:4.97 mm
ISO:104
Light Source:D55
Make:Motorola
Max Aperture:f/2.8
Model:DROIDX 7daa00017ff00000015a7d751702002d
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=7282
Favorites:Add to Favorites

Comment 1 to 17 of 17
Page: 1

LilCinnamon   [Jul 08, 2011 at 09:09 AM]
Why is it in a medium fixture?
Tmcdllr   [Jul 08, 2011 at 11:27 AM]
Whoa, I've never seen a 75 tag either!
streetlight98   [Jul 08, 2011 at 02:26 PM]
I didn't even know these were made in anything over 400 watts. Shocked
Silverliner14B   [Jul 09, 2011 at 12:51 AM]
I have seen the 750w lamp listed in catalogs as an option but didn't think they made any, well they did! @Ian, GE chose this size because they stopped making the M1000 in the 80s and also the 750w lamp uses the same bulb size as the 400w merc so it fits right in.
streetlight98   [Jul 09, 2011 at 04:05 PM]
Would a 1000w HPS lamp fit in this?
Silverliner14B   [Jul 10, 2011 at 01:34 AM]
Philips used to, or maybe still does, make a 1000w HPS lamp in an ED37 envelope which had two 500w arc tubes in series. Never heard of one being used in a 400w sized cobrahead, save for the Sylvania B2255 which was available in 1000w metal halide.
Form109   [Jul 10, 2011 at 04:00 AM]
Nice find Dave,very good eye for spotting this.
LilCinnamon   [Jul 10, 2011 at 07:57 AM]
What about the heat? This should get too hot for a medium fixture..
streetlight98   [Jul 10, 2011 at 02:33 PM]
Well, the R2/A2 was larger than an average medium fixture, so it may not affect it as badly, but yeah, it would take a toll on the ballast and lamp life. I've seen 400w HPS M-250A2s before. Question
joe_347V   [Dec 06, 2011 at 06:35 AM]
Nice, a lot of our highmast lights use 750w HPS.
streetlight98   [Dec 06, 2011 at 09:51 PM]
I wonder, could a cobrahead could be mounted on a highmast pole? That'd be a cool sight, though due to crazy vibration, screws better be used rather than latches....
Silverliner14B   [Dec 06, 2011 at 09:56 PM]
They have high masts with cobraheads up north of the border.
gailgrove   [Dec 06, 2011 at 10:01 PM]
That would be an interesting sight! I have never seen it anywhere though but have pondered the idea before. Highmast fixtures have latches too, I'm sure vibrations would be no problem as long as the fixtures have 4 bolt slipfitters.
streetlight98   [Dec 06, 2011 at 10:07 PM]
I've never really had a good look at highmasts since they're virtually extinct around here. I'm sure using cobraheads would be cheaper too, but since they're designed to light large areas at lower mounting levels, the distribution might not be good. Neutral
gailgrove   [Dec 06, 2011 at 10:25 PM]
Here they are replacing all the cobras they can with highmasts, they still use 2 inch mast arms so there no reason a cobra couldn't be mounted to them.
Silverliner14B   [Dec 07, 2011 at 12:34 AM]
@Mike, did RI take down the few high masts they had? I remember seeing metal halide high masts around the interchange of I-295 and US 6 if I recall correctly.
streetlight98   [Dec 07, 2011 at 01:18 AM]
There used to be highmasts on Rte 295 at Exit 6, but they were taken down. I thought they were mercury vapor, but they were taken down around 2008-2009. There used to be highmasts here There are still MH (or MV) highmasts at exit 7 on I-95 and HPS ones in front of the Providence Place Mall at Exit 22 on I-95

Comment 1 to 17 of 17
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