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McGraw Edison Unidor 400 Here's a pic of a McGraw Edison Unidor 400, there's still some of these left in my area but they're getting less and common. Note that the info on the tag below doesn't match the faded NEMA tag, the watts on the tag is 400w while the faded NEMA tag says 200w. Could be a mercury to sodium conversion but the model number suggests that it was originally sodium since it has the LU prefix that's commonly used for sodium lumes. [b]Closeup of the tag from another Unidor on the same string of lights:[/b] [url=http://img858.imageshack.us/img858/5663/p1170703.jpg][img]http://img829.imageshack.us/img829/6442/p1170703sm.jpg[/img][/url] Click to enlarge Keywords: American_Streetlights

McGraw Edison Unidor 400

Here's a pic of a McGraw Edison Unidor 400, there's still some of these left in my area but they're getting less and common.

Note that the info on the tag below doesn't match the faded NEMA tag, the watts on the tag is 400w while the faded NEMA tag says 200w. Could be a mercury to sodium conversion but the model number suggests that it was originally sodium since it has the LU prefix that's commonly used for sodium lumes.

Closeup of the tag from another Unidor on the same string of lights:

Click to enlarge
P3260094.JPG P3270112.JPG P3270126.JPG P3270141.JPG P9251070.JPG
File information
Filename:P3270126.JPG
Album name:joe_347V / Toronto Area Streetlights
Rating (2 votes):55555
Keywords:American_Streetlights
Company and Date Manufactured:McGraw Edison of Canada Ltd, 1974
Model Number:Unidor 400
Wattage:Was 400w now 200w
Lamp Type:High pressure sodium
Filesize:122 KiB
Date added:Mar 28, 2011
Dimensions:1600 x 1200 pixels
Displayed:363 times
Color Space:sRGB
Contrast:0
DateTime Original:2011:03:27 18:47:52
Exposure Bias:0 EV
Exposure Mode:0
Exposure Program:Program
Exposure Time:1/250 sec
FNumber:f/5.4
Flash:No Flash
Focal length:75 mm
ISO:100
Light Source:Unknown: 9
Make:Olympus Imaging Corp.
Max Aperture:f/3.5
Model:SP600UZ
URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=5724
Favorites:Add to Favorites

Comment 1 to 9 of 9
Page: 1

gailgrove   [Mar 28, 2011 at 02:43 AM]
Nice Very Happy
joe_347V   [Sep 18, 2011 at 06:21 AM]
Updated, added link to enlarged second pic and updated description.
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19 Aug 2011 at 06:19
Thanks, I've just noticed that the description doesn't make sense too. Laughing
Form109   [Sep 18, 2011 at 07:26 AM]
McGraw Edison Unidors are a fairly rare site to me...a few locations i can recall them...such as an Ace Parking Lot in Daingerfield,Texas...Along Interstate 20 in Meredian,MS which actually has both the 250 and 400 Sizes with a few Revere 2700's sprinkled in,they are all HPS which is kinda neat..then there's a pet supplies store right here in tyler with a few pairs and those are mercury.
mercuryvaporrocks   [Sep 18, 2011 at 02:54 PM]
I'm guessing not many utility companies liked these too much which explains why they're so rare. There's a few in RIDC Park off of Route 28 in PA, other than that I haven't seen too many of them at all.
streetlight98   [Sep 18, 2011 at 03:25 PM]
I wonder why these weren't liked that much. These were designed to by lineman friendly. I've never seen one of these in person exept when I went to Marblehead, Massachusetts.
joe_347V   [May 27, 2012 at 04:34 AM]
Update, This or another Unidor from this string was replaced by a FCO AEL 125. Confused
Silverliner14B   [May 27, 2012 at 07:31 AM]
Can't be 200w in '74, that wattage would not be introduced until late '77 or '78. Prolly converted to 200w HPS.
joe_347V   [May 27, 2012 at 11:13 PM]
Ahh, thanks Dave, I guess they stuck the NEMA tag on when they converted it 200w.
streetlight98   [May 28, 2012 at 01:03 AM]
It must have been '77 since in my '77 GE catalog 200W HPS wasn't listed as a standard model number. The catalog listed it as an option on the side like.

Comment 1 to 9 of 9
Page: 1
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